The Roman City in Motion Presentation Kiel, Germany

Image: North Cardo Maximus, facing south towards the forum, at Ostia (Jeff Veitch)

I am in Germany for an international workshop (details here) and presented some of my work on porticoes. Unlike the majority of presentations last year, I presented from a manuscript, as I wanted to stay focused on some key points of discussion. I had not originally planned to discuss porticoes (was going to save it for another paper), but did not have the time to develop my work on the Vicus Iugarius in Rome to a presentable point.  The majority of questions following the paper were aspects of clarification, many of which were due to my ownpresentation style. I continually struggle with a good balance between spatial theory, physics of sound, and my case studies. In this paper there is a clear preference on the theoretical framework, at the expense of the physics of sound and sound analysis. I have included a summary of the discussion following the paper at the end.

The Roman City in Motion: Senses, Space and Experience

Jeffrey D. Veitch, University of Kent

[Title Slide] Thanks to the organisers of the session and to you all for being here.

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Image: Lefebvre on Roman space

[Lefebvre Rome] At several points, Henri Lefebvre makes reference to two topics taken up in this paper: the senses and Roman space, although neither is in reference to the other. For Lefebvre, following Nietzsche and Marx, the senses are theoretical tools for understanding space,[1] while Rome serves as a concrete example of the social production of space within Lefebvre’s history of the city.[2] In this paper, I take Lefebvre’s twin suggestions as a starting point for a theoretically informed interpretation of Roman urbanism. That is to say, the senses serve as tools for understanding the reciprocal influence of the body and space in the formation of urban experience.

Using the senses as a theoretical tool, following Lefebvre, I want to make this argument: by placing the sensory experience of street acoustics under the microscope, I argue for an experiential agency of portico space that is shaped by physical architecture, bodily movements and literary perceptions. Each of these aspects will be addressed in that order and set the framework for the argument of this paper. In this way, I draw together the two elements of Lefebvre’s suggestions and argue for experiential agency as sensory perceptions of urban space and its formation of the Roman sensorium.

The Senses as Kinaesthetic Tools

[Lefebvre books] Let us begin by listening to Lefebvre and bringing his insights in line with recent emphasis on kinaesthetic and embodied forms of knowledge. Recent studies of Roman space and spatial concepts have drawn primarily from the work of Henri Lefebvre. Writing in the late 1960s to mid-1970s, Lefebvre formulated the groundwork for what was letter termed the ‘spatial turn’(See Harvey, Social Justice and the City (University of Georgia 1973); Soja, Postmodern Geographies (Verso 1989)). Lefebvre suggests a ‘pedagogy of the body’ that ‘would connect the conceived to the lived (and conversely), assumes a form of qualitative knowledge still in a state of germination and promise. Rhythmanalysis, for example’.[7] The invocation of rhythmanalysis draws the senses and times into this ‘pedagogy of the body’, as the rhythmanalist ‘thinks with his [sic] body’.[8] This further elaborates the nature of Lefebvre’s tripartite division of space between the conceived, perceived, and lived. The knowledge derived from the connection of the conceived and lived is sensory knowledge. Lefebvre draws on smells and musical metaphors to describe the rhythmanalist’s methods and emphasises the measurement of space by the body.[9]

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Image: Libet Diagram (Source on the slide)

Lefebvre does not develop these ideas into a method and they are scattered throughout his diverse writings. Here I want to draw in some more work, which grounds these ideas in movement and embodiment. [Libet Diagram] By the end of the 1970s, several experiments had verified that between an event and our sensory experience there was a half-second delay.[11] In following experiments it was further confirmed that unconscious reactions had delays of 100 ms, or a tenth-of-a-second delay.[12] What this suggested is that conscious reflection or action based on sensory stimuli was, in fact, a reflection on a past event, all be it a very recent past event.[13] To put this in Lefebvrean terms, lived space precedes conceived space in its mediation by the senses. Or simply, we sense the world before we act, think or reflect on that world.

This places human agency at the start of interactions with the built environment, rather than beginning with language or thought. I like the emphasis on agency; performative acts do ‘something’ to space (I am also keen to keep the ‘something’ ambiguous). Here reflexivity becomes important, especially in terms of atmosphere and the social action of participants. I want to extend the reflexivity to the space of action, as well as the action itself. The reflexivity of architecture coincides with the reflexivity of the senses.[15] In my own work, I stress the role of architecture in social construction based on auditory experience; the human bodies auditory system interprets space in the act of hearing. At the same time, what, where, and how we hear are part of the social and cultural understandings (habitus) we learn through repetitive experience of space.

Interpreting Streets through the Senses

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Image: AC & TL Diagram (Veitch 2017)

[AC & TL] The embodied knowledge carried within a cities inhabitant’s places agency as central to knowledge formation.[16] Simply put, human agents create the social, cultural and physical world through sensory experience, first unconsciously and then through cognitive reflection. However for Romans to be social agents a mass of infrastructural material must already be in place.[17] The infrastructural materials can be assessed and measured to analyse the kinaesthetic experience in terms of comparative figures. Physical dimensions and construction materials shape the auditory experience of the streets, which can be measured using modern acoustic design tools.

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Image: Eleanor Betts recent publication (Routledge 2017)

[EB Book] In my chapter in Eleanor Betts’ recent publication, I focus on Absorption Coefficient (AC) and Transmission Loss (TL). I explain the physics of these measurements in that chapter and here point out the basic difference as sound reflected, AC, or sound passing through the material, TL.[18] [Augustus] The reflection, resonance and other auditory effects of sound create the experience the body interprets in the half-second delay. These auditory effects are directly related to the dimensions, size and shape of urban space. In particular, I want to look at the basic architectural structure of streets in Ostia, with some comparisons to Pompeii and Rome, to assess the kinaesthetic experience and knowledge potentially created.

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Image: Streets and Shops in Ostia (Veitch 2017)

[Ostia] At the scale of the city, by the second century CE Ostia had developed beyond any formal grid system. However other forms of standardisation were at work within Ostia. Ellis has shown a clear preference in Ostia for shop entrances on the right-hand side of the threshold.[19] Street widths in Ostia display an uneven geographical distribution, same as Pompeii, although with a clear preference in width of 4-6 m.[20] However Ostia has a limited number of streets roughly 8 m in width, the other major grouping in Pompeii.[21] Instead, 94% of the streets in Ostia are less than 7 m in width. The widespread use of basalt on streets across Ostia suggests a certain foundational auditory experience, as the absorption coefficient is low (0.01-0.02) and sound would reflect off the surface.

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Image: Streets and Porticoes in Ostia (Veitch 2017)

In terms of auditory experience, the limited range of widths in Ostia suggests building height and architectural elements being prime motivators of auditory differences. Unlike Pompeii, street architecture, such as benches and sidewalks, are primarily reconstructed and there are limited remains for analysis. [Portico map] Porticoes appear in Ostia, although again, in an uneven geographical distribution across the city. Beginning in the early 2nd c. CE, several large-scale building projects, with associated porticoes, began to reshape the city’s urban experience.[22] Unlike benches, fountains, or shrines, porticoes create a space of experience defined by the architecture. The semi-enclosed area is experienced as acoustically separated space from the roadway beyond, even as sounds will pass between the two auditory fields. In this way, the two auditory fields influence each other. Sounds from one bleed into the other. What becomes an issue is the terminology and language of description, which we will return to at the end.

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Image: Sound Dissipation on 3 Streets in Ostia (Veitch 2017)

[Sound dissipation] Turning to the kinaesthetic experience of porticoes and streets in Ostia, the acoustic properties of street canyons can be modelled using based on the materials and dimensions of the street. Here the sound dissipation on 3 streets, all with porticoes along some part, is modelled. Measurement is made based on a noise in the centre of the street. The Decumanus is the widest (10 m), while the N Cardo is the only street with porticoes on both sides for the whole length (130 m). What the graph indicates is the steep dissipation of sound in the Decumanus, while N Cardo mimics this experience due to the addition of porticoes. In the case of the Via Epagathiana, with a portico on one side and for a limited length the dissipation is skewed on one side of the graph. However, the experience of sound in all three streets shows similar trends. Chronologically, the N Cardo is the earliest large-scale redevelopment with a portico as a defining feature in Ostia (116 CE). Porticoes are constructed along the neighbouring Via dei Misuratori del Grano and Via della Fortuna the next year (117-8 CE), while the forum is finished in the 120s.[23]

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Image: Chronology of Porticoes and large-scale building projects (based on DeLaine 2002)

[Portico chronology] It is worth briefly concluding on the chronology of porticoes and shop standardisation outside of Ostia. Pompeii does not have any porticoes along it’s streets in the 79 CE plan. Rome, on the other hand, sees two distinctive groupings of portico construction, namely the late Republican/Augustan period and the Flavian period.[24] However these porticoes were a distinct architectural form, one that does not continue after the Flavian’s in Rome.[25] In roughly the same time period, the regulation of street porticoes is prescribed following the 64 CE fire in Rome.[26] While the literary sources, from the 2nd c. CE (Tacitus and Suetonius), set the motivation for porticoes in the need to control and prevent fires, it is worth noting that it is in the same time period as the last series of portico structures. Here the distinction between experience, in the streets of the 2nd c. CE, and narrative reflection, instigated in the 1st c. CE, is evident. Returning to Ostia, it is not during the Flavian period that porticoes begin to appear but rather at the start of the 2nd c. CE. That is to say, the experience of the portico street was an experience in Rome that reappeared between Pompeii’s destruction and the start of Ostia’s large scale rebuilding.

That the auditory experience is important is obvious, however the connection of that importance to understandings of Roman space is subtler. At the start of this paper, I drew on Lefebvre’s suggestions to use the senses as theoretical tools and the role of Rome in the production of (social) space. Porticoes, I argue, serve to bring together these two points. I noted the unconscious experience of space as being the first point of interaction between humans and the built environment. In the case of the N Cardo, the two porticoes lining the street created a comparable auditory experience to the wider and more limited portico frontage along the east Decumanus. The Via Epagathiana showed the way portico frontage, in that case on the west side, altered the auditory experience of the street. Further study of other streets and porticoes will nuance these findings further.

Conclusions

[Concluding slide] Finally, I want to end with a brief comment on sensory and spatial metaphors as ways of describing the changes in perception. Out of the experience of space, and in particular the changing experience of streets at the end of the first, beginning of the second century CE, Romans perceived of space differently, although not in complete rejection of previous perception.

The associations and metaphors used to describe this translation of experience into literature give clues to the power these experiences could have. Today, we rely on visual and spatial metaphors to describe social relations and urban environments; cities are images, the public eye, we ‘map’ and ‘explore’ social relations and networks. However, these visual and spatial metaphors reduce spatial and social relationships to static and abstract understandings.[29] In the translation of experiences of space to literary reflection vision is given power over other sensory experience.

In the Latin literary context, the verb incedo and its noun incessus refer to walking, which also carries associations with bearing or how one carries oneself.[30] The association of movement with comportment is key. In moving through the city, inhabitants carried themselves, or, in Bourdieu’s terms, enacted their habitus. By drawing movement and comportment together the metaphor places the power on walking, not seeing. The person walking/carrying themselves is the subject. What are necessary are a need to critically evaluate the experience of space, as I have tried to show, as well as the metaphorical conceptions of space. Non-visual, sensory metaphors offer a way forward in understanding the metaphorical architecture of Roman urbanism.

Discussion:

1. If sounds could happen anywhere on the street or in the portico, why is the model based on a sound in the centre of the street? i.e. carts, sellers in the portico, people walking in the street or in the portico.

The model of the acoustics is based on generic sound (white noise, or sound across all frequencies) in a fixed location. This gives us the acoustic foundation from which we can then move to particular sounds. In this paper, I focused on the architecture along the street and the role of porticoes in altering street acoustics. I was less concerned with the catalogue of sounds possibly produced along the street.

2. As a medievalist, we have evidence for mud and dirt along streets and these would dampen sound. Is there any evidence of this in the Roman period?

Short answer: no. There are anecdotal stories of magistrates not cleaning streets (Suetonius, Vespasian 5), legal regulations of what can be left outside of properties (Dig. 43.11.1.1), duties for magistrates to clean and maintain streets and sewers (Dig. 43.23.1-2). Mud and dirt would dampen the sound dissipation of the streets.

[Later thought: this dampening would suggest that the sound dissipation curves for the N Cardo and Via Epagathiana would decrease at the top, moving closer to the Decumanus curve. In the case of the Decumanus, the dampening would happen at the edges of the curve, due to the streets extended length]

3. I am working on urban ecology, what would be the role of birds in your analysis or are there any studies on bird noise?

I do not know of any studies of bird noises in Rome. Particular sounds, such as bird noises, can be modelled in the street space. These would produce different sound dissipation curves to the ones I showed.

4. a) You do not use the term ‘soundscape’ but surely it plays a part in the social porduction of space; b) you ended with [Latin] words, but these would be aspects of the perceived sense, in a theoretical definition of ‘perception’. For example, my husband could snore and this sound would bother me, but may not bother others.

First, soundscapes: I am growing uncomfortable with the term [although, I have used it in publications]. I find its use unclear in defining its geographical extent and it being associated with cataloging all the sounds in a space (again, without reference to the flexibility of this term). That leads to the second point. Yes, ‘perception’ is culturally constituted and that is why I looked to Roman usage of metaphorical walking was associated with comportment. This offers a critique of our own reliance on visual metaphors to describe cities and urban space.

Footnotes:

[1] Lefebvre, The Production of Space (Blackwell 1991), 399-400; a point also made by Terry Eagleton but with no reference to Lefebvre, Eagleton, Materialism (Yale 2017), 62-3.

[2] cité: Lefebvre, Metaphilosophy (Verso 2016), 142, 209-215; The Production of Space (Blackwell 1991), 239; see my own review of Lefebvre’s use of Rome and the ancient city at Ancient Noise (blog, jeffdveitch.me).

[3] Laurence, Roman Pompeii: Space and Society, 2nd ed. (Routledge 2007), 103.

[4] Laurence, Roman Pompeii: Space and Society, 2nd ed. (Routledge 2007), 107-9.

[5] Poehler, ‘Measuring the Movement Economy: A Network Analysis of Pompeii’, in Flohr and Wilson (eds.), The Economy of Pompeii (OUP 2017), 204.

[6] Poehler, ‘Measuring the Movement Economy: A Network Analysis of Pompeii’, in Flohr and Wilson (eds.), The Economy of Pompeii (OUP 2017), 204.

[7] Lefebvre, Towards an Architecture of Enjoyment (University of Minnesota 2014), 149.

[8] Lefebvre, Rhythmanalysis: Space, Time and Everyday Life (Bloomsbury 2013), 21.

[9] Lefebvre, Rhythmanalysis: Space, Time and Everyday Life (Bloomsbury 2013), 21, 27, 33.

[10] Lefebvre, Rhythmanalysis: Space, Time and Everyday Life (Bloomsbury 2013), 32; cf. Lebas and Kaufman, ‘Lost in Transposition – Time, Space and the City’, in Writings on Cities (Blackwell 1996).

[11] See Libet et al, ‘Subjective referral of the timing for a conscious sensory experience: A functional role for the somatosensory specific projection system in man’ Brain 102 (1979), 191–222.

[12] Libet et al, ‘Subjective referral of the timing for a conscious sensory experience: A functional role for the somatosensory specific projection system in man’ Brain 102 (1979), 191–222.

[13] See also Thrift, Non-Representational Theory: Space, Politics, Affect (Routledge 2008).

[14] Lefebvre, Towards an Architecture of Enjoyment (University of Minnesota 2014), 151.

[15] Lefebvre, Towards an Architecture of Enjoyment (University of Minnesota 2014), 41.

[16] Eagleton, Materialism (Yale 2017), 65-6.

[17] Eagleton, Materialism (Yale 2017), 67.

[18] See Veitch, ‘Soundscape of the Street: Architectural Acoustics at Ostia, in Betts (ed) Senses of the Empire: Multisensory Approaches to Roman Culture (Routledge 2017), 54-70.

[19] Ellis, ‘Pes Dexter: Superstition and the State in the Shaping of Shopfronts and Street Activity in the Roman World’, in Laurence and Newsome (eds.) Rome, Ostia, Pompeii: Movement and Space (OUP 2011), 160-173.

[20] Pompeii, Hartnett, ‘Si quis hic sederit: Streetside Benches and Urban Society in Pompeii’, AJA (2008), 110.

[21] Pompeii, Hartnett, ‘Si quis hic sederit: Streetside Benches and Urban Society in Pompeii’, AJA (2008), 110; Ostia, Veitch, Acoustics in Roman Ostia (unpub. PhD).

[22] See DeLaine, ‘Building Activity in Ostia in the second century AD’ in Bruun and Gallina-Zevi (eds.) Ostia e Portus nelle loro relazioni con Roma (AIRF 2002), 41-102 for discussion of large-scale building at this time.

[23] See DeLaine, ‘Building Activity in Ostia in the second century AD’ in Bruun and Gallina-Zevi (eds.) Ostia e Portus nelle loro relazioni con Roma (AIRF 2002), 41-102 for dates.

[24] Macaulay-Lewis, ‘The City in Motion: Walking for Transport and Leisure in the City of Rome’, in Laurence and Newsome (eds.) Rome, Ostia, Pompeii: Movement and Space (OUP 2011), 274.

[25] Macaulay-Lewis, ‘The City in Motion: Walking for Transport and Leisure in the City of Rome’, in Laurence and Newsome (eds.) Rome, Ostia, Pompeii: Movement and Space (OUP 2011), 274-5.

[26] Tacitus Annales 15.43.1-2; Suetonius Nero 16.

[27] Lefebvre, The Production of Space (Blackwell 1991), 40.

[28] Agricola 19-21⁠; Laurence and Trifilò, ‘The Global and the Local in the Roman Empire’, in Pitts and Versluys (eds.) Globalisation and the Roman Empire (CUP 2015), 103.

[29] See Smith and Katz, Grounding Metaphor: Towards a spatialised politics’, in Keith and Pile (eds.) Place and the Politics of Identity (Routledge 1993), 67-83; Massey, Space, Place and Gender (Polity 2002).

[30] Jenkyns, God, Space and City in the Roman Imagination (OUP 2013), 148.

Porticoes, Embodiment and Street Cries: Recent work…

Image: North Cardo Maximus, facing south, towards the forum in Ostia (Jeff Veitch)

Currently, I am working on a variety of different things all at once (presentations, publications, job applications). I have not posted here as much due to these activities and some, like job applications, are not very exciting things to discuss on the blog. However there are a couple of concepts and ideas that are worth briefly discussing, in the hopes that it will motivate me to devote more time to them in the coming months. So, here are a couple of topics swimming in my head right now…

Porticoes: I have two upcoming presentations that I am working on (details here). Originally, I had planned to write two completely separate papers on different aspects of my work (motivating me to write and formulate more particular approaches, ideas, etc). Instead, the two presentations will draw on case studies of porticoes from Ostia. In preparing these presentations, I keep returning to the experienced difference of portico architecture within the social space of streets. At a basic level, the portico is shaded and separated from the street. In auditory terms, the portico and street are different auditory fields, however the two fields influence each other. When the acoustic properties of street canyons are modelled, in instances where porticoes exist, the properties show a marked progression towards the acoustic properties of Ostia’s main street, the decumanus. In a way, certain streets approach the auditory character of the decumanus with the addition of porticoes. The chronology further emphasises the experienced character of the space, which is replicated to various degrees in other places across the city. Streets that could never reach the scale of the decumanus are able to mimic its auditory experience through more controlled and smaller scale developments. I will be testing some of these ideas this next week, when I present in Kiel, Germany.

Embodiment: Several books, lectures and writings have brought embodiment back to the forefront of what I am doing. I picked up Terry Eagleton’s new book, Materialism, and he makes a case for the importance of embodiment in Marx, as well as other forms of materialism. Tied into the emphasis on embodiment is the role of the senses as ways of measuring urban space or embodiment as site of particular forms of knowledge gleaned from the senses. These are not new ideas for me, but they are beginning to crystallise in particular ways (as well as focusing my generally scattered interests). Much of these ideas will appear in my presentations coming up, although they are primarily in the background and theory behind the presentations.

Finally, street cries: Street noise is one of the primary topics in my work and one that I continue dig into. After the winter holidays, I read through a series of books on Paris in the 18th and 19th century. Street criers, sellers and vendors were a part of the landscape of the city in that period and changes to the architecture of Paris were expressed in relation to street noise. There are some parallels with the ancient world, although comparisons need to be cautiously approached. What I find most useful, however, is the theoretical implication of much of this work, which builds bridges between social, political and economic aspects of the senses and their spatial settings. In short, as the topography of Paris changes, the sensorium likewise changes; these shifts produce different social, political and economic spatialities. Rome, I would argue, undergoes parallel changes in many ways. To say that architectural changes that alter the topography of Rome change the experience of the city is obvious. However, what need further study are the particularities of these changes.

How did the addition of porticoes change the way sellers utilised street space? What are the economic implications? Or social? Or political, for that matter? Do street traders change tactics in response to the development of porticoes along streets? Some of these questions have begun to be addressed in various ways. Sarah Bond’s new book, Trade & Taboo: Disreputable Professions in the Roman Mediterranean, address aspects of social stigmas towards criers and auctioneers (praeco). In particular, Bond emphasises the changing nature of such social stigmas from the late Republic to late antiquity. The emphasis on changing stigmas, parallels my own interest in changing urban forms. In a different context, Arjan Zuiderhoek, in The Ancient City (part of the Key Themes in Ancient History series), discusses (briefly) street sellers in terms of a wider understanding of ancient cities. Zuiderhoek covers a similar longue durée of ancient history, although he highlights continuity in city formations, focusing instead more on the archaeological material and current debates. Both are recent publications, which highlight some of the areas for further investigation.

Hopefully, in the coming months some of these ideas will formulate into even more coherent research agendas, possible publications and further blog posts. In the meantime, it’s back to presentation prep and editing a chapter due by the end of the month…

Non-visual knowledge & sensory metaphors: J. Butler, A. Amin & N. Thrift, & S. Graham

I attended Judith Butler’s Houseman Lecture at UCL on Wednesday, which was recorded and should be available on YouTube soon (I’ll add a link as soon as they post the lecture). The lecture was titled ‘Kinship Trouble in The Bacchae’ and explored issues with the kinship categories in Greek tragedy. While Greek tragedy is not my specialty, contemporary discussions of social relationships and interactions in their spatial configuration and geography are relevant too much of my work.

In particular, I was struck by two points in the lecture: 1) an emphasis on non-visual forms of knowledge/recognition; and 2) the use of sensory metaphors, in particular sound metaphors, to describe the dialectic (my term) implicit in kinship relations, or social relations in general.

Non-visual forms of knowledge are at the centre of my acoustic work. The experience of acoustics, hearing a sound in a particular space, immediately tells us something about the space, in a non-visual way. Usually this is the volume of the room, a measurement gleaned from sound better than sight. At a couple of points in her lecture, Butler made reference to the inadequacy of visual recognition. Children stories are full of misunderstood kinship relations typified in the question, ‘are you my mother?’ These narratives are grounded in the requirement of audible asking, rather than visual confirmation. Related to this misrecognition, Butler pointed out that it is through sound that children are taught the first level of kinship relations in the learning of the words ‘mum’ or ‘dad’. Now, apart with learning the word the child is taught to associate it with the proper object. Here it is attaching the sound to the proper object that forms the initial recognition, which the visual signifier can be later misunderstood. This interests me as an aspect of the complexity of sensory experience and the social/cultural forms of misunderstanding or misrecognition of that experience. I found it fascinating to think about the initial teaching of the child through sound, only to later questions the visual recognition and to return to sound for proper confirmation.

Recently, I have been working on a chapter looking at sensory approaches to ancient cities and urbanism. In the writing process, I found that I was using sensory metaphors to describe unstable, continuously moving, or aspects ‘in process’. Standard discussions of archaeology rely on visual metaphors, which have stable, fixed and static connotations. In contrast, sound metaphors have more dynamic connotations. Echoes rebound off structures; resonances vibrate and energise after the initial production. Two writings drew my attention to non-visual metaphors as better modes of discourse: Amin and Thrift’s Cities: Reimagining the Urban and Graham’s chapter, ‘Counting bricks and stacking wood’ in The Cambridge Companion to Ancient Rome.

In her lecture, Butler continually returned to the implicit dynamic in kinship where one alternates between feelings of love/murder and recognition/unknowing. In describing these alterations, she drew on sound metaphors, especially resonance, echo and reverberation. It seemed that these metaphors made sense of the complexity implicit in affects and social relations at the centre of kinship relations. Auditory metaphors further imply a certain methodological practice, namely reflection. That is to say, the metaphors are ground in sound reflecting off things or parallel frequencies sounding together (resonance). I have discussed my own interest in reflexivity as a methodological tool. The interactions between people and space are reflexive and shape one another simultaneously, an aspect experienced in hearing an echo or resonant note.

Amin and Thrift critically questions three standard metaphors for the city and everyday urbanism, namely the flâneur and transitivity, rhythms and rhythmanalysis, and urban footprints and naming (10-25). These metaphors, for Amin and Thrift, are used with minimal methodological clarity, although they do emphasise that the metaphors are sensory. The critique is a valid reminder of the need to use the right metaphor to clarify complex and dynamic processes, which the urban metaphors were opening up. What is worth remembering is the way metaphors can open up new ways of understanding, but that these understandings, and metaphors, need to be critiqued, as well.

In a different way, Graham (checkout his website) shows the way sensory metaphors can be used to open up new understandings of urban processes. At the outset, Graham notes the use of metaphors as conditioning the way we think about the city. In this case, the city is a living thing that is an ‘emergent feature of the way its citizens interact’ (278). Graham draws on the metaphors of background hum or noise to discuss the flows of energy (both human and material) through the city of ancient Rome. Anyone aware of my own work will immediately know my interest in such usage. Drawing on figures for man power days, materials needed and load carrying measures, Graham calculates the provisions of material, people and transport for building in Rome, which makes up the background hum of movement and work in the city. In certain instances, peaks in activity would punctuate this noise, such as imperial building projects. In my own work, I have focused on the actual noise of such construction however, when dealing with certain scales, like the whole city of Rome, the particularity of individual sounds looses its importance. Instead, the auditory metaphor allows for the focus to shift between specific activity and city scale.

Graham has also worked with sonification, which is in a way an auditory metaphor. Sonification converts data into a song and allows one to listen to the analysed data. Although self-proclaimed ‘bad’ music, Graham has set a variety of different data sets to song here (Cacophony: Bad Algorithmic Music to Muse To). This is often done with geospatial data as you can hear the changes in the song as you move geographically across a map, although you can do the same with temporal changes. At Programming Historian, Graham has a leason on the process of sonification (here). This form of data manipulation serves as an auditory metaphor, making connections and clarifying aspects implicit in data that are not visable. Again, this allows for ways of understanding to be separated from visual forms, taping into other sensory modalities to create knowledge.

 

Lavalier Mics & Audio for Video

It has been a busy week with sickness, writing deadlines and applications so, this is a short note on a recent question about lavalier (or lapel) mics.

Lavalier microphones are small wearable microphones, oftern referred to as lapel mics (as they clip onto your lapel). I was asked by a friend, Ellie Mackin, who regularly vlogs here (check out her YouTube channel in the links), about lavalier mics that record from your phone and my recommendations, if I had any. I discussed basic mic types in the last blog, but did not talk about lavalier types. So, here are some thoughts on lavs, recording for video and a couple of recs at the end.

First, pros and cons for lavaliers. I think lavalier mics are a good option for vlogging and video audio. If you are podcasting and do not have video, get a traditional wired mic and stand. The price point to quality is in favour of hard wired, handheld mics. Lavs are quite versitile, but once the are set do not move them. That is, do not transfer one mic from person to person as you record (one mic per person is a rule to live by). Why lavlaier’s for video? It is best to separate different signal lines. If you record video on a camera, do not rely on the camera audio. By separateing the signal lines you have more options for editing (like cutting between still shots and video segments without having to separate the audio and video signals, saving you a step in the editing process). I assume that most recordings will be a single take (you are not recording 5 different takes and editing them into a coherent track) and this means limiting the number of potential ‘issues’. Background noise is always the top ‘issue’ when recording outside of a studio. As I have said before, having every person and/or mic on its own line makes editing easier.

My assumption is that many will record the video by camera and the audio by mic at the same time. This is why Ellie asked about phone recording options. In this way, you can jump between still shots and video without worrying about time alignment problems. So, separating video and audio signals is good. You will have to edit the audio and video back together, but this is fairly easy to do.

Now, other reasons for lavaliers. Camera microphones are usually suck. They do the basic job of recording noise, but are limited in range and pick-up everything around the camera. By using a lavalier, you can edit out external noise, or even better, cut it out before it gets recorded. In a future post, I will go through some of the ways you can get rid of background noise. It should be no surprise, but not all lavaliers connect to your phone and not all will work with certain phone types. If you are going to record with your phone, you need a lavalier with a TRRS connector (1/8” or 3.5mm). All phone jacks use TRRS (at least for now…) but you need to make sure the mic works with your OS system (some only run iOS).

OK, so here are some recommendations for lavaliers that connect to your phone. Shure MVL Omnidirectional Lavalier, $69. The MVL works with both iOS and Android, although Shure has their own mobile recording app MOTIV that only works with certain Android devices. RODE SmartLAV, £45. Again, RODE has their own recording app and the SmartLAV works with both iOS and Android.

Both mics are from longstanding sound production companies, which means warranties and such. I have not used either of their propitery recording programs and I usually stick to programs I know. There are other options out there (as with everything), but I would look at these brands before jumping into the deep end.

Podcasts & Sound Production: Hardware

As a first-year undergraduate student, I was enrolled in electrical engineering and worked in sound production. My ‘plan’ was to get picked-up by sound production company and drop out of school to work on band tours. Parts of the ‘plan’ worked out, I worked for a couple production companies with numerous bands; others did not, I never dropped out of school and, in the end, have spent more of my life in school than not.

I start with that brief bio to add some context to the rest of this series of posts. Recently, there have been several conversations around topics of ‘sound production’ (usually, not using that term) and podcasts. A friend asked for some recommendations on technical hardware and several people have asked me about preferences for editing software. These two different elements are tied to each other in production and I want to layout some of my preferences, as well as some of the things to think about in terms of producing good quality recordings for Podcasts. In this first post, I want to discuss the basic elements of hardware and go through pre-recording stuff. In later posts, I will talk about audio editing, some tricks and good practices in recording, and things to do after you have recorded your show in the editing process.

Hardware Basics

Podcasts are relatively simple to put together and can be done easily with a minimal amount of ‘stuff’ (hardware and software). What is slightly more complicated, and takes up the most time, is the behind-the-scenes work of editing. Therefore, I want to briefly discuss the hardware and pieces that go into the recording, and then turn to the editing in later posts. I’ll put links to recommended hardware and software throughout all the posts. I am Mac user and the availability of GarageBand in Apple software packages means I will make reference to that program, as a baseline. Other programs are available and there are some really good free, open-source options (LMMS being a great one).

The basic circuit layout is a person speaking into a microphone, which is connected to an audio interface via an XLR cable. The interface connects through USB to the computer and the software allows for mixing the sound input and track recording. My perfectionist-side thinks that using microphones is better than computer built-in microphones, as it allows you to single out issues and edit them without causing further problems. So, taking a basic interview as what is being reordered, you will need: 2 microphones; 2 XLR cables; 1 audio interface (USB cables are usually included), computer with recording software. Most audio interfaces have a headphone jack (1/4 input, not a mini-jack phone type headphones), which is helpful for editing and setting levels before you record.

Microphones

There are 2 types of microphones: dynamic mics and condenser mics. Dynamic mics are versatile mics that do not require power and are made up of a coil of wire set in a magnetic field. The Shure SM58 is a standard performance mic that is pretty rugged and does the job (built around voice amplification). Condenser mics require power, which it draws from the audio interface, and uses a diaphragm to conduct vibrations. If you go with a condenser mic, you will need to make sure the interface has ‘phantom power’. Most interfaces do, but check, otherwise the mic will not work. Condenser mics are usually slightly more expensive, but in general ‘pick-up’ more sound than dynamic mics. Blue makes a USB version of the Snowball, in which case you do not need an audio interface.

Mics are also described in terms of their directional pick-up settings, either cardioid or omnidirectional. Cardioid mics pick-up sounds from the front, while omnidirectional will pick-up sound from all sides. Cardioid is probably best, as I prefer 1 mic per person. You will also need cables: XLR the type and 20 ft is a standard length (although, you probably do not need that long a length)

Now some placement and best practices for mics: if you have a dynamic mic you need to keep it close to your mouth (about a hands distance). The mic has a limited range of pick-up so, if you move away from the mic or if you turn your face, the sound will drop. You want a consistent volume and this requires you to limit movements and face the mic. Condenser mics will pick-up more sound and so, you do not need to be quite so, on the mic. The trade off is that it also picks-up more background noise, which can make the recording messy. In this sense, the place where you decide to record is also important. If it is a noisy room there are some tricks you do to cut out some of that noise, like using a gate (I will discuss using gates in another post, as it requires some explanation).

Now, I mentioned above that I prefer a mic per person, rather than trying to catch everyone with one mic. This is an issue of control, as each mic has a separate audio line allowing you to set the gain (volume) and EQ for each. If one person is louder/quieter than the other, the separate audio lines can be ‘mixed’ (referring to the act of setting or adjusting the audio mixer) to produce a balanced volume. I am sure we have all heard the either to loud or to quiet voices, which strain the listener. (In many ways, the best audio is unnoticed. If I had a great show, the folks in the audience would hardly notice what I was doing.)

Audio Interface

Audio interfaces are the bit that converts the microphone single into a digital single. Most have some basic features that are helpful in getting things set. Most are similar and have mic inputs (usually 2 but you can get 4), gain (controls the volume of the incoming single), headphone input and volume control, and (most) have a ‘monitor’ controls for recording over playback (for music recording).

Audio interface tips: you want the audio single coming in to be high enough that you have space to work with. This does not mean turning the gain all the way up, but making sure that the person talking peaks into the yellow range (‘Peak’ is audio lingo for the loudest noise). If you are hitting the red (the highest level), you will begin to distort so, make sure you are not turned up to the level (it’s also bad for the longevity of your equipment).

You will want both lines to sound balanced. This does not mean that each line will be at the same level, but you want then to sound about the same. You will quickly learn your own starting level the more you record, but it is always good to double check before you start recording. The better balanced the levels are when you record, the less time you will have to spend fixing the balance during editing.

Your other option is to hire a sound engineer to do all the editing…

Interfaces: M-Audio M-Track II; Behringer UMC202HD; PreSonus AudioBox iTwo

Bundles (Interface, headphones and mic): Presonus iTwo Recording Bundle (Amazon.com); M-Audio Vocal Studio Pro (Amazon.com)

Feel free to contact me, if you have any questions or want recommendations for specific things. In the next post, I will discuss some of the basics of audio recording software.

 

Back to Ostia… and Rome!

I fly out today for two weeks in Rome. I will be doing some field work for the first half and then presenting at the Roman Archaeology Conference in Rome the second week.

Recently, I have been working on the acoustics of street spaces. I have concentrated on the north cardo maximus, which is a single large scale development of the area north of the forum. The street is lined with porticos on each side and is uniform in its construction. The cardo maximus is the second widest street in Ostia, only the decumanus is wider. In many ways, the cardo maximus is the main street one would enter coming from the Tiber (unlike today, where we enter from land). In contrast, I have been analysing a side street, which was not uniformily constructed and lacks porticos or other monumental features. The Via degli Augustale is the opposite to the north cardo maximus. My field work will focus on the development of the street and the way individual owners shaped the streetscape.

In terms of acoustics, as well as sounds, the complex construction, reconstruction, and continuous work along the Via degli Augustale all shaped the way the streets sound field. A temple along the decumanus was dedicated in the 190s CE, which reduced an open street area along the street. The noise of the temple (sacrifices, processions, etc.) would now dominate the north end of the street, while at the south end was one of the largest fulleries. It is the interactions between these various activities in the street space that produces a different experience, than that of the cardo maximus.

Some of this work will, hopefully, make it into my presentation at RAC. I am in a session discussing sensory approaches to movement in the Roman period. Much of the presentation will be an introduction to my basic approach, but I will use my north cardo work as a case study. If things go as planned, I should be able to share a bit about the comparison with other streets, like the Via degli Augustale. Fingers crossed.

Finally, an update on the blog: I have started to pull together some resources on acoustics, under the ‘Acoustic Resources’ tab at the top. I have linked to Electric Archaeology’s github on sonification, which involves turning a data set into a song. It’s a great way to present data in a different format, requiring people to engage with data through listening. I also posted some work that I will be presenting in April. There are a couple of network graphs of sound roots, street terms and Latin authors I created pulling references from the Packard Humanities Institute database. They show the terms prefered by authors, as well as the connections between places (street terms) and sounds (Latin root words for sounds/noise). The graphs are interactive so, you can scroll over a term/author/word and it will highlight the network associated with the selection.

 

 

Johnny Cash in the Baths of Neptune

This last weekend I tried a new form of presentation for my acoustic analysis. It was a short 10 minute presentation at Multitudo: a multisensory, multilayered and multidirectional approach to classical studies. I was part of the organising committee for the workshop and we were drawn to non-academic ways of presenting our research. I decided to test out a ‘reverse’ of my usual presentation style.

My usual: intro acoustics, physics of sound, maths, sums…; followed by discussion of spaces with plans, graphs and tables; finish with social-spatial implications.

 

This time I started with a sound sample. I played a 20 second clip of Johnny Cash’s God’s Gonna Cut You Down. The clip was EQ’d flat, with no reverb. I then played 3 more versions of the clip, each set to the reverberation time and EQ of a room from the Baths of Neptune. I then showed one of my standard plans of the Baths with the reverberation times for each room colour coded. I asked the audience to try and figure out the relationship of the sound sample with the rooms on the plan.

It was a challenging exercise. Most people haven’t spent hours listening to tracks, adjusting the EQ or reverb. Most of us don’t connect what we hear with the space we hear those sounds in. And most of us don’t think about the space that is created in the post-production of making a record. At the same time, it’s a great exercise in relating acoustic discussions to different spaces.

I was asked in the question time why I picked Johnny Cash and not some choral, symphonic or even ‘ancient’ style music. I thought I would layout my response here, as it gets at some of my driving questions behind my project.

  1. I picked the Johnny Cash song because it is a simple track with almost no reverb or processing to start with. I used the first 20 seconds of the track, which is just foot stomps, claps, guitar and Johnny’s voice. The flat response of the song means that when I altered it to each room it would be noticeable and wouldn’t get lost in an abundance of different sounds.
  2. I needed a clip with some low end frequencies, which I could draw out for one of the samples. Johnny’s voice has a deep resonance, which showed off the long reverb and muddy character of the low frequency noise.
  3. I used a contemporary song, one I expected a majority of people to know, because I wanted to make a connection with the audience. In my answer, I said, “Playing a foreign sound, in a foreign space and asking foreign questions, is too much for an audience.” I am not interested in simply recreating ‘ancient’ sounds. By using a contemporary song, the focus shifts to the changes created by the space, not the authenticity of the sound. This is probably the main theoretical reason for the choice. My project uses acoustics to better understand the architecture and architectural history of Rome.
  4. Finally, it is way more fun to put Johnny Cash in the Baths of Neptune, than it would be to play white noise or a frequency tone. The music is only a tool, which conveys architectural information. While I could use any sound, I used something that entertained me, as well. It takes time, and a lot of repeating, to get the clips right. I picked a song that I could repeat without going to crazy…

I was impressed with the response and have been thinking about adding sound samples to more of my presentations. It was far more engaging, and we all need to be able to laugh at our presentations, thinking about Johnny Cash playing in a Roman bath complex, as a way to share what I’m researching.

Postgraduate Workshop: Roman Space and Urbanism, 11 Nov. 2015

I will be presenting on my current chapter this Wednesday, 11 Nov. 2015, at a Postgraduate Workshop at University of Kent. The workshop highlights some of the current work on Roman space and urbanism in the Classical and Archaeological Studies department by PhD students. The workshop is a part of a visit by Kent Institute of Advance Studies in Humanities Visiting Fellow Eric Poehler (UMass), who will give a keynote lecture. Details can be found here.

My presentation will introduce my approach to acoustics from archaeological remains/materials and its implications for understanding noises through Lefebvre’s ‘rhythmanalysis’. I use Lefebvre’s rhytmanalysis to bring together the multiplicity of sources for sounds and noises to think about everyday rhythms and life in Ostia.

I focus on the space of streets, although I draw examples from the Baths of Neptune and Portico di Pio IX at Ostia. The title, Inde caput morbi, is taken from Juvenal’s Satire 3, which I use to bounce some of the physics of sound findings off Roman writings on streets. It should be a fun afternoon and I’m excited to hear some of my fellow Kent PhDs presenting their work.

Sounds (or Noise) in Streets

In a previous post I discussed the influence of shop doors on the acoustics of the space. The basis analysis and methodology will be published in a forthcoming edited volume (hopefully in June). Recently, I have been exploring the acoustics beyond the facade or shop front and looking at street noise. Much of the methodological approach remains the same; dimensions and construction material form the baseline of the acoustic analysis. However, certain elements are missing in street canyons that mean sounds react in different ways to the space.

First, the lack of covered or enclosed space means that large areas will not reflect sounds. It is a basic feature of streets that they are open to the sky and rarely covered. In acoustic terms, this means that much of the sound will dissipate over distance, as opposed to being absorbed by the physical walls or ceilings, as happens in enclosed rooms.

Despite the lack of covering, the pavement and building facades will reflect and absorb the sounds and noises of the street. In contemporary acoustic design, traffic noise is the primary nuisance, which acoustic designers and architects try to limit. It was, in fact, the high levels of traffic noise that began the search for standard acoustic measures. Emily Thompson has a fantastic book, *The Soundscape of Modernity*, that charts the history acoustics as a field in the start of the modern period.

In terms of ancient streets, in a similar manner to enclosed spaces the types of materials can be assessed for their absorption coefficient, a standard measure of a materials ability to absorb sound. These basic elements can again be plugged into a predicative equation to measure the absorption.

The second deficulty with streets is the complexity of the arrangements. Even building facades present a complex sound field with various surfaces, materials and architectural features. In Ostia, several buildings have monumental entrances with pillars, columns, or pedestals and some times all three. These features will change the way the sound reflects off the surface. Even more problematice, although I do really like the challenge, is the widespread use of colonnades or porticos. The space of the portico is, again, partially covered and partially open. This means that sounds from the street can fill the portico, as well as sounds within the portico only being heard in close proximity to the space. The nature of porticos present their own acoustic character, quite unlike other street spaces.

It has been fun to explore the ways these acoustic features of streets, and porticos, can help us to better understand the street as a social space. I have just begun to map the effects of conversation noise in certain streets in Ostia and I will post an update as I write more about the street space. I will be presenting some of these findings this weekend in Umea, Sweden.

Goldsmith’s MMB Sleep Project

A friend is working on her MA thesis project. The masters program is part of the Music, Mind, and Brain Program at Goldsmiths College, University of London.

To participate you must:

  • Be over 18 years old
  • Not be taking any pharmaceutical sleep aids at the time of study
  • Must NOT share a bed more than 2x weekly

All Individuals agree to participate for 15 days: composed of two 7 day sessions split by a one day break.  Participants will be given a password upon completion of an initial survey.  This will open your first session.  All instructions will be provided for you.