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The Better to Hear You With, My Dear: Size and the Acoustic World

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Hearing the Unheard IIToday the SO! Thursday stream inaugurates a four-part series entitled Hearing the UnHeard, which promises to blow your mind by way of your ears. Our Guest Editor is Seth Horowitz, a neuroscientist at NeuroPop and author of The Universal Sense: How Hearing Shapes the Mind (Bloomsbury, 2012), whose insightful work on brings us directly to the intersection of the sciences and the arts of sound.9781608190904

That’s where he’ll be taking us in the coming weeks. Check out his general introduction just below, and his own contribution for the first piece in the series. — NV

Welcome to Hearing the UnHeard, a new series of articles on the world of sound beyond human hearing. We are embedded in a world of sound and vibration, but the limits of human hearing only let us hear a small piece of it. The quiet library screams with the ultrasonic pulsations of fluorescent lights and computer monitors. The soothing waves of a Hawaiian beach are drowned out by the thrumming infrasound of underground seismic activity near “dormant” volcanoes. Time, distance, and luck (and occasionally really good vibration isolation) separate us from explosive sounds of world-changing impacts between celestial bodies. And vast amounts of information, ranging from the songs of auroras to the sounds of dying neurons can be made accessible and understandable by translating them into human-perceivable sounds by data sonification.

Four articles will examine how this “unheard world” affects us. My first post below will explore how our environment and evolution have constrained what is audible, and what tools we use to bring the unheard into our perceptual realm. In a few weeks, sound artist China Blue will talk about her experiences recording the Vertical Gun, a NASA asteroid impact simulator which helps scientists understand the way in which big collisions have shaped our planet (and is very hard on audio gear). Next, Milton A. Garcés, founder and director of the Infrasound Laboratory of University of Hawaii at Manoa will talk about volcano infrasound, and how acoustic surveillance is used to warn about hazardous eruptions. And finally, Margaret A. Schedel, composer and Associate Professor of Music at Stonybrook University will help readers explore the world of data sonification, letting us listen in and get greater intellectual and emotional understanding of the world of information by converting it to sound.

– Guest Editor Seth Horowitz

Although light moves much faster than sound, hearing is your fastest sense, operating about 20 times faster than vision. Studies have shown that we think at the same “frame rate” as we see, about 1-4 events per second. But the real world moves much faster than this, and doesn’t always place things important for survival conveniently in front of your field of view. Think about the last time you were driving when suddenly you heard the blast of a horn from the previously unseen truck in your blind spot.

Hearing also occurs prior to thinking, with the ear itself pre-processing sound. Your inner ear responds to changes in pressure that directly move tiny little hair cells, organized by frequency which then send signals about what frequency was detected (and at what amplitude) towards your brainstem, where things like location, amplitude, and even how important it may be to you are processed, long before they reach the cortex where you can think about it. And since hearing sets the tone for all later perceptions, our world is shaped by what we hear (Horowitz, 2012).

But we can’t hear everything. Rather, what we hear is constrained by our biology, our psychology and our position in space and time. Sound is really about how the interaction between energy and matter fill space with vibrations. This makes the size, of the sender, the listener and the environment, one of the primary features that defines your acoustic world.

You’ve heard about how much better your dog’s hearing is than yours. I’m sure you got a slight thrill when you thought you could actually hear the “ultrasonic” dog-training whistles that are supposed to be inaudible to humans (sorry, but every one I’ve tested puts out at least some energy in the upper range of human hearing, even if it does sound pretty thin). But it’s not that dogs hear better. Actually, dogs and humans show about the same sensitivity to sound in terms of sound pressure, with human’s most sensitive region from 1-4 kHz and dogs from about 2-8 kHz. The difference is a question of range and that is tied closely to size.

Most dogs, even big ones, are smaller than most humans and their auditory systems are scaled similarly. A big dog is about 100 pounds, much smaller than most adult humans. And since body parts tend to scale in a coordinated fashion, one of the first places to search for a link between size and frequency is the tympanum or ear drum, the earliest structure that responds to pressure information. An average dog’s eardrum is about 50 mm2, whereas an average human’s is about 60 mm2. In addition while a human’s cochlea is spiral made of 2.5 turns that holds about 3500 inner hair cells, your dog’s has 3.25 turns and about the same number of hair cells. In short: dogs probably have better high frequency hearing because their eardrums are better tuned to shorter wavelength sounds and their sensory hair cells are spread out over a longer distance, giving them a wider range.

Interest in the how hearing works in animals goes back centuries. Classical image of comparative ear anatomy from 1789 by Andreae Comparetti.

Interest in the how hearing works in animals goes back centuries. Classical image of comparative ear anatomy from 1789 by Andreae Comparetti.

Then again, if hearing was just about size of the ear components, then you’d expect that yappy 5 pound Chihuahua to hear much higher frequencies than the lumbering 100 pound St. Bernard. Yet hearing sensitivity from the two ends of the dog spectrum don’t vary by much. This is because there’s a big difference between what the ear can mechanically detect and what the animal actually hears. Chihuahuas and St. Bernards are both breeds derived from a common wolf-like ancestor that probably didn’t have as much variability as we’ve imposed on the domesticated dog, so their brains are still largely tuned to hear what a medium to large pseudo wolf-like animal should hear (Heffner, 1983).

But hearing is more than just detection of sound. It’s also important to figure out where the sound is coming from. A sound’s location is calculated in the superior olive – nuclei in the brainstem that compare the difference in time of arrival of low frequency sounds at your ears and the difference in amplitude between your ears (because your head gets in the way, making a sound “shadow” on the side of your head furthest from the sound) for higher frequency sounds. This means that animals with very large heads, like elephants, will be able to figure out the location of longer wavelength (lower pitched) sounds, but probably will have problems localizing high pitched sounds because the shorter frequencies will not even get to the other side of their heads at a useful level. On the other hand, smaller animals, which often have large external ears, are under greater selective pressure to localize higher pitched sounds, but have heads too small to pick up the very low infrasonic sounds that elephants use.

Audiograms (auditory sensitivity in air measured in dB SPL) by frequency of animals of different sizes showing the shift of maximum sensitivity to lower frequencies with increased size. Data replotted based on audiogram data by Sivian and White, 1933; ISO 1961; Heffner and Masterton, 1980; Heffner and Heffner, 1982; Heffner, 1983; Jackson et al, 1999.

Audiograms (auditory sensitivity in air measured in dB SPL) by frequency of animals of different sizes showing the shift of maximum sensitivity to lower frequencies with increased size. Data replotted based on audiogram data by Sivian and White (1933). “On minimum audible sound fields.” Journal of the Acoustical Society of America, 4: 288-321; ISO 1961; Heffner, H., & Masterton, B. (1980). “Hearing in glires: domestic rabbit, cotton rat, feral house mouse, and kangaroo rat.” Journal of the Acoustical Society of America, 68, 1584-1599.; Heffner, R. S., & Heffner, H. E. (1982). “Hearing in the elephant: Absolute sensitivity, frequency discrimination, and sound localization.” Journal of Comparative and Physiological Psychology, 96, 926-944.; Heffner H.E. (1983). “Hearing in large and small dogs: Absolute thresholds and size of the tympanic membrane.” Behav. Neurosci. 97: 310-318. ; Jackson, L.L., et al.(1999). “Free-field audiogram of the Japanese macaque (Macaca fuscata).” Journal of the Acoustical Society of America, 106: 3017-3023.

But you as a human are a fairly big mammal. If you look up “Body Size Species Richness Distribution” which shows the relative size of animals living in a given area, you’ll find that humans are among the largest animals in North America (Brown and Nicoletto, 1991). And your hearing abilities scale well with other terrestrial mammals, so you can stop feeling bad about your dog hearing “better.” But what if, by comic-book science or alternate evolution, you were much bigger or smaller? What would the world sound like? Imagine you were suddenly mouse-sized, scrambling along the floor of an office. While the usual chatter of humans would be almost completely inaudible, the world would be filled with a cacophony of ultrasonics. Fluorescent lights and computer monitors would scream in the 30-50 kHz range. Ultrasonic eddies would hiss loudly from air conditioning vents. Smartphones would not play music, but rather hum and squeal as their displays changed.

And if you were larger? For a human scaled up to elephantine dimensions, the sounds of the world would shift downward. While you could still hear (and possibly understand) human speech and music, the fine nuances from the upper frequency ranges would be lost, voices audible but mumbled and hard to localize. But you would gain the infrasonic world, the low rumbles of traffic noise and thrumming of heavy machinery taking on pitch, color and meaning. The seismic world of earthquakes and volcanoes would become part of your auditory tapestry. And you would hear greater distances as long wavelengths of low frequency sounds wrap around everything but the largest obstructions, letting you hear the foghorns miles distant as if they were bird calls nearby.

But these sounds are still in the realm of biological listeners, and the universe operates on scales far beyond that. The sounds from objects, large and small, have their own acoustic world, many beyond our ability to detect with the equipment evolution has provided. Weather phenomena, from gentle breezes to devastating tornadoes, blast throughout the infrasonic and ultrasonic ranges. Meteorites create infrasonic signatures through the upper atmosphere, trackable using a system devised to detect incoming ICBMs. Geophones, specialized low frequency microphones, pick up the sounds of extremely low frequency signals foretelling of volcanic eruptions and earthquakes. Beyond the earth, we translate electromagnetic frequencies into the audible range, letting us listen to the whistlers and hoppers that signal the flow of charged particles and lightning in the atmospheres of Earth and Jupiter, microwave signals of the remains of the Big Bang, and send listening devices on our spacecraft to let us hear the winds on Titan.

Here is a recording of whistlers recorded by the Van Allen Probes currently orbiting high in the upper atmosphere:

When the computer freezes or the phone battery dies, we complain about how much technology frustrates us and complicates our lives. But our audio technology is also the source of wonder, not only letting us talk to a friend around the world or listen to a podcast from astronauts orbiting the Earth, but letting us listen in on unheard worlds. Ultrasonic microphones let us listen in on bat echolocation and mouse songs, geophones let us wonder at elephants using infrasonic rumbles to communicate long distances and find water. And scientific translation tools let us shift the vibrations of the solar wind and aurora or even the patterns of pure math into human scaled songs of the greater universe. We are no longer constrained (or protected) by the ears that evolution has given us. Our auditory world has expanded into an acoustic ecology that contains the entire universe, and the implications of that remain wonderfully unclear.

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Exhibit: Home Office

This is a recording made with standard stereo microphones of my home office. Aside from usual typing, mouse clicking and computer sounds, there are a couple of 3D printers running, some music playing, largely an environment you don’t pay much attention to while you’re working in it, yet acoustically very rich if you pay attention.

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This sample was made by pitch shifting the frequencies of sonicoffice.wav down so that the ultrasonic moves into the normal human range and cuts off at about 1-2 kHz as if you were hearing with mouse ears. Sounds normally inaudible, like the squealing of the computer monitor cycling on kick in and the high pitched sound of the stepper motors from the 3D printer suddenly become much louder, while the familiar sounds are mostly gone.

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This recording of the office was made with a Clarke Geophone, a seismic microphone used by geologists to pick up underground vibration. It’s primary sensitivity is around 80 Hz, although it’s range is from 0.1 Hz up to about 2 kHz. All you hear in this recording are very low frequency sounds and impacts (footsteps, keyboard strikes, vibration from printers, some fan vibration) that you usually ignore since your ears are not very well tuned to frequencies under 100 Hz.

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Finally, this sample was made by pitch shifting the frequencies of infrasonicoffice.wav up as if you had grown to elephantine proportions. Footsteps and computer fan noises (usually almost indetectable at 60 Hz) become loud and tonal, and all the normal pitch of music and computer typing has disappeared aside from the bass. (WARNING: The fan noise is really annoying).

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The point is: a space can sound radically different depending on the frequency ranges you hear. Different elements of the acoustic environment pop up depending on the type of recording instrument you use (ultrasonic microphone, regular microphones or geophones) or the size and sensitivity of your ears.

Spectrograms (plots of acoustic energy [color] over time [horizontal axis] by frequency band [vertical axis]) from a 90 second recording in the author’s home office covering the auditory range from ultrasonic frequencies (>20 kHz top) to the sonic (20 Hz-20 kHz, middle) to the low frequency and infrasonic (<20 Hz).

Spectrograms (plots of acoustic energy [color] over time [horizontal axis] by frequency band [vertical axis]) from a 90 second recording in the author’s home office covering the auditory range from ultrasonic frequencies (>20 kHz top) to the sonic (20 Hz-20 kHz, middle) to the low frequency and infrasonic (<20 Hz).

Featured image by Flickr User Jaime Wong.

Seth S. Horowitz, Ph.D. is a neuroscientist whose work in comparative and human hearing, balance and sleep research has been funded by the National Institutes of Health, National Science Foundation, and NASA. He has taught classes in animal behavior, neuroethology, brain development, the biology of hearing, and the musical mind. As chief neuroscientist at NeuroPop, Inc., he applies basic research to real world auditory applications and works extensively on educational outreach with The Engine Institute, a non-profit devoted to exploring the intersection between science and the arts. His book The Universal Sense: How Hearing Shapes the Mind was released by Bloomsbury in September 2012.

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Sounding Out! Podcast #32: The World Listening Update – 2014 Edition

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Listen in as Eric Leonardson and Monica Ryan celebrate World Listening Day 2014 by reflecting on the work of R. Murray Schafer and the World Soundscape Project. Interviewees Professor Sabine Breitsameter of Hochschule Darmstadt (Germany) and Professor Barry Truax of Simon Fraser University (Canada) discuss the impact of Schafer’s ideas and offer commentary on contemporary threads within the field of Acoustic Ecology. How does does Acoustic Ecology help us to think through today’s complex environments and how can listeners like you make a difference?

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Co-Authors of this podcast:

Eric Leonardson is a Chicago-based audio artist and teacher. He has devoted a majority of his professional career to unorthodox approaches to sound and its instrumentation with a broad understanding of texture, atmosphere and microtones. He is President of the World Forum for Acoustic Ecology and founder of the Midwest Society for Acoustic Ecology, and Executive Director of the World Listening Project. Leonardson is an Adjunct Associate Professor in the Department of Sound at The School of the Art Institute of Chicago.

Monica Ryan is an instructor and audio artist from Chicago. Currently her work explores spatialized sound recording and playback techniques along with interactive sound environments. She teaches in several institutions in Chicago, including The School of the Art Institute of Chicago and Columbia College.

Tom Haigh is a British post production sound mixer, composer, and phonography enthusiast, now residing in Chicago. As a staff engineer at ARU Chicago, he works with clients in advertising, media, and independent film.

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Featured image: Used through a CC BY license. Originally posted by Ky @Flickr.

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Sculptural Dissonance: Hans Zimmer and the Composer as Engineer

Zimmer at work

Sculpting the Film Soundtrack

Welcome to our new series Sculpting the Film Soundtrack, which brings you new perspectives on sound and filmmaking. As Guest Editor, we’re honored and delighted to have Katherine Spring, Associate Professor of Film Studies at Wilfrid Laurier University. Spring is the author of an exciting and important new book Saying it With Songs: Popular Music and the Coming of Sound to Hollywood Cinema. Read it! You’ll find an impeccably researched work that’s the definition of how the history of film sound and media convergence ought to be written.

But before rushing back to the early days, stick around here on SO! for the first of our three installments in Sculpting the Film Soundtrack.

NV

It’s been 35 years since film editor and sound designer Walter Murch used the sounds of whirring helicopter blades in place of an orchestral string section in Apocalypse Now, in essence blurring the boundary between two core components of the movie soundtrack: music and sound effects.  This blog series explores other ways in which filmmakers have treated the soundtrack as a holistic entity, one in which the traditional divisions between music, effects, and speech have been disrupted in the name of sculpting innovative sonic textures.

In three entries, Benjamin Wright, Danijela Kulezic-Wilson, and Randolph Jordan will examine the integrated soundtrack from a variety of perspectives, including technology, labor, aesthetic practice, theoretical frameworks, and suggest that the dissolution of the boundaries between soundtrack categories can prompt us to apprehend film sound in new ways. If, as Murch himself once said, “Listening to interestingly arranged sounds makes you hear differently,” then the time is ripe for considering how and what we might hear across the softening edges of the film soundtrack.

- Guest Editor Katherine Spring

Composing a sound world for Man of Steel (2013), Zack Snyder’s recent Superman reboot, had Hans Zimmer thinking about telephone wires stretching across the plains of Clark Kent’s boyhood home in Smallville. “What would that sound like,” he said in an interview last year. “That wind making those telephone wires buzz – how could I write a piece of music out of that?” The answer, as it turned out, was not blowing in the wind, but sliding up and down the scale of a pedal steel guitar, the twangy lap instruments of country music. In recording sessions, Zimmer instructed a group of pedal steel players to experiment with sustains, reverb, and pitches that, when mixed into the final track, accompany Superman leaping over tall buildings at a single bound.

His work on Man of Steel, just one of his most recent films in a long and celebrated career, exemplifies his unique take on composing for cinema. “I would have been just as happy being a recording engineer as a composer,” remarked Zimmer last year in an interview to commemorate the release of a percussion library he created in collaboration with Spitfire Audio, a British sample library developer. “Sometimes it’s very difficult to stop me from mangling sounds, engineering, and doing any of those things, and actually getting me to sit down and write the notes.” Dubbed the “HZ01 London Ensembles,” the library consists of a collection of percussion recordings featuring many of the same musicians who have performed for Zimmer’s film scores, playing everything from tamtams to taikos, buckets to bombos, timpani to anvils. According to Spitfire’s founders, the library recreates Zimmer’s approach to percussion recording by offering a “distillation of a decade’s worth of musical experimentation and innovation.”

In many ways, the collection is a reminder not just of the influence of Zimmer’s work on contemporary film, television, and video game composers but also of his distinctive approach to film scoring, one that emphasizes sonic experimentation and innovation. Having spent the early part of his career as a synth programmer and keyboardist for new wave bands such as The Buggles and Ultravox, then as a protégé of English film composer Stanley Myers, Zimmer has cultivated a hybrid electronic-orchestral aesthetic that uses a range of analog and digital oscillators, filters, and amplifiers to twist and augment solo instrument samples into a synthesized whole.

Zimmer played backup keyboards on “Video Killed the Radio Star.”

In a very short time, Zimmer has become a dominant voice in contemporary film music with a sound that blends melody with dissonance and electronic minimalism with rock and roll percussion. His early Hollywood successes, Driving Miss Daisy (1989) and Days of Thunder (1990), combined catchy themes and electronic passages with propulsive rhythms, while his score for Black Rain (1989), which featured taiko drums, electronic percussion, and driving ostinatos, laid the groundwork for an altogether new kind of action film score, one that Zimmer refined over the next two decades on projects such as The Rock (1996), Gladiator (2000), and The Pirates of the Caribbean series.

What is especially intriguing about Zimmer’s sound is the way in which he combines the traditional role of the composer, who fashions scores around distinct melodies (or “leitmotifs”), with that of the recording engineer, who focuses on sculpting sounds.  Zimmer may not be the first person in the film business to experiment with synthesized tones and electronic arrangements – you’d have to credit Bebe and Louis Barron (Forbidden Planet, 1956), Vangelis (Chariots of Fire, 1981), Jerry Goldsmith (Logan’s Run, 1976), and Giorgio Moroder (Midnight Express, 1981) for pushing that envelope – but he has turned modern film composing into an engineering art, something that few other film composers can claim.

Zimmer Studio

Zimmer’s studio

One thing that separates Zimmer’s working method from that of other composers is that he does not confine himself to pen and paper, or even keyboard and computer monitor. Instead, he invites musicians to his studio or a sound stage for an impromptu jam session to find and hone the musical syntax of a project. Afterwards, he returns to his studio and uses the raw samples from the sessions to compose the rest of the score, in much the same way that a recording engineer creates the architecture of a sound mix.

“There is something about that collaborative process that happens in music all the time,” Zimmer told an interviewer in 2010. “That thing that can only happen with eye contact and when people are in the same room and they start making music and they are fiercely dependent on each other. They cannot sound good without the other person’s part.”

Zimmer facilitates the social and aesthetic contours of these off-the-cuff performances and later sculpts the samples into the larger fabric of a score. In most cases, these partnerships have provided the equivalent of a pop hook to much of Zimmer’s output: Lebo M’s opening vocal in The Lion King (1994), Johnny Marr’s reverb-heavy guitar licks in Inception, Lisa Gerrard’s ethereal vocals in Gladiator and Black Hawk Down (2002), and the recent contributions of the so-called “Magnificent Six” musicians to The Amazing Spider Man 2 (2014).

The melodic hooks are simple but infectious – even Zimmer admits he writes “stupidly simple music” that can often be played with one finger on the piano. But what matters most are the colors that frame those notes and the performances that imbue those simple melodies with a personality. Zimmer’s work on Christopher Nolan’s Dark Knight trilogy revolves around a deceptively simple rising two-note motif that often signifies the presence of the caped crusader, but the pounding taiko hits and bleeding brass figures that surround it do as much to conjure up images of Gotham City as cinematographer Wally Pfister’s neo-noir photography. The heroic aspects of the Batman character are muted in Zimmer’s score except for the presence of the expansive brass figures and taiko hits, which reach an operatic crescendo in the finale, where the image of Batman escaping into the blinding light of the city is accompanied by a grand statement of the two-note figure backed by a driving string ostinato. Throughout the series, a string ostinato and taikos set the pace for action sequences and hint at the presence of Batman who lies somewhere in the shadows of Gotham.

Zimmer’s expressive treatment of musical colors also characterizes his engineering practices, which are more commonly used in the recording industry. Music scholar Paul Théberge has noted that the recording engineer’s interest in an aesthetic of recorded musical “sound” led to an increased demand for control over the recording process, especially in the early days of multitrack rock recording where overdubbing created a separate, hierarchical space for solo instruments. Likewise for Zimmer, it’s not just about capturing individual sounds from an orchestra but also layering them into a synthesized product. Zimmer is also interested in experimenting with acoustic performances, pushing musicians to play their instruments in unconventional ways or playing his notes “the wrong way,” as he demonstrates here in the making of the Joker’s theme from The Dark Knight:

The significance of the cooperative aspects of these musical performances and their treatment as musical “colors” to be modulated, tweaked, and polished rests on a paradoxical treatment of sound. While he often finds his sound world among the wrong notes, mistakes, and impromptu performances of world musicians, Zimmer is also often criticized for removing traces of an original performance by obscuring it with synth drones and distortion. In some cases, like in The Peacemaker (1997), the orchestration is mushy and sounds overly processed. But in other cases, the trace of a solo performance can constitute a thematic motif in the same way that a melody serves to identify place, space, or character in classical film music. Compare, for instance, Danny Elfman’s opening title theme for Tim Burton’s Batman (1989) and Zimmer’s opening title music for The Dark Knight. While Elfman creates a suite of themes around a central Batman motif, Zimmer builds a sparse sound world that introduces a sustained note on the electric cello that will eventually be identified with the Joker.  It’s the timbre of the cello, not its melody, that carries its identifying features.

To texture the sounds in Man of Steel, Zimmer also commissioned Chas Smith, a Los Angeles-based composer, performer, and exotic instrument designer to construct instruments from “junk” objects Smith found around the city that could be played with a bow or by hand while also functioning as metal art works. The highly abstract designs carry names that give some hint to their origins – “Bertoia 718” named after modern sculptor and furniture designer Harry Bertoia; “Copper Box” named for the copper rods that comprise its design; and “Tin Sheet” that, when prodded, sounds like futuristic thunderclaps.

Smith’s performances of his exotic instruments are woven into the fabric of the score, providing it with a sort of musical sound design. Consider General Zod’s suite of themes and motifs, titled “Arcade” on the 2-disc version of the soundtrack. The motif is built around a call-and-answer ostinato for strings and brass that is interrupted by Smith’s sculptural dissonance. It’s the sound of an otherworldly menace, organic but processed, sculpted into a conventional motif-driven sound world.

Zimmer remains a fixture in contemporary film music partly because, as music critic Jon Burlingame has pointed out, he has a relentless desire to search for fresh approaches to a film’s musical landscape. This pursuit begins with his extracting of sounds and colors from live performances and electronically engineering them during the scoring process. Such heightened attention to sound texture and color motivated the creation of the Spitfire percussion library, but can only hint at the experimentation and improvisational nature that goes into Zimmer’s work. In each of his film scores, the music tells a story that is tailored to the demands of the narrative, but the sounds reveal Zimmer’s urge to manipulate sound samples until they are, in his own words, “polished like a diamond.”

Zimmer at Work

Ben Wright  holds a Provost Postdoctoral Fellowship from the University of Southern California in the School of Cinematic Arts. In 2011, he received his Ph.D. in Cultural Studies from the Institute for Comparative Studies in Literature, Art and Culture at Carleton University. His research focuses on the study of production cultures, especially exploring the industrial, social, and technological effects of labor structures within the American film industry. His work on production culture, film sound and music, and screen comedy has appeared in numerous journals and anthologies. He is currently completing a manuscript on the history of contemporary sound production, titled Hearing Hollywood: Art, Industry, and Labor in Hollywood Film Sound.

All images creative commons.

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SO! Amplifies: Ian Rawes and the London Sound Survey

LSS crop

Document3SO! Amplifies. . .a highly-curated, rolling mini-post series by which we editors hip you to cultural makers and organizations doing work we really really dig.  You’re welcome!

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The London Sound Survey website went online in 2009 with a couple of hundred recordings I’d made over the previous year. For a long time I’d wanted to make a website about London but couldn’t think of a good angle. When I got a job as a storeman in the British Library’s sound archive I became interested in field recording. There were the chance discoveries in the crates I hauled around of LPs like Murray Schafer’s The Vancouver Soundscape and the Time of Bells series by the anthropologist Steven Feld. I realised that sound could be the way to know my home city better and to present my experience of it.

Fast forward to last week: It is a warm June afternoon and the marsh is alive with the hum of the Waltham Cross electricity substation. I am a few miles to the northeast of London in the shallow crease of the Lea Valley. It’s a part of the extra-urban mosaic of reservoirs, quarries, industrial brownfield sites, grazing lands, nature reserves and outdoor leisure centres which has been usefully named “Edgelands” by the environmentalist Marion Shoard.

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To make the recording, I’m wearing two mics strapped to each side of my head. The grey acrylic fur windcovers enveloping each mic might, from a distance, look like small woodland animals. It’s as well that not many people come here.
This is how I’m spending the summer, gathering the raw material for a new section on the London Sound Survey website. The London Sound Survey is a growing collection of Creative Commons-licensed sound recordings of places, events and wildlife in the British capital. Historical references too are gathered to find out how London’s sounds have changed. It’s partly to experiment with depicting the sounds of places as diagrams and collages rather than literal-minded maps. But it’s also a nice indulgence after quitting a job where I spent the last three years in a windowless room.
Content of the daytime sound grid recordings depicted in graphical form. The louder the sound, the darker the icon. More than one icon of the same kind means that sound takes up more of the recording. The London Sound Survey® 2014

Content of the daytime sound grid recordings depicted in graphical form. The louder the sound, the darker the icon. More than one icon of the same kind means that sound takes up more of the recording. The London Sound Survey® 2014

Listening as a topic of scholarly interest has grown in popularity recently. I was interested too, and thought the best way forward was to find some expert listeners – blind people – and ask for their opinions. I soon learned there were differences in perceptions between those born blind, and those with age-related visual impairments. The former are more likely to have detailed mental maps of their surroundings based on listening to reverberation, from which they learn about features like the width of streets and the height of buildings.
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I’m grateful to have Andre Louis, a blind musician and field recordist, begin to add his recordings and commentary to the LSS website. I’m always struck by the precision with which Andre pays attention to what he hears around him.
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Screenshot 2014-06-23 11.04.30

Hear the city’s busy thoroughfares and quieter corners through the ears of musician and recordist Andre Louis. His thoughts on why he records are rendered in braille to form the basis for a new London sound map. The London Sound Survey® 2014

Other work is to be done. The Museum of London has offered to archive the site’s recordings and I have to ferret out all the original uncompressed sound files for them. Also, new batches of recordings have to be made for another site project, the 12 Tones of London. Here I’ve used census data and a statistical method called cluster analysis to sort neighbourhoods into 12 groups, and identify in each group the most demographically ‘typical’ neighbourhood to record in.
12 Tones of London uses a statistical analysis to select 12 out of London's 623 council wards (not counting the City of London) in the hope that their sound profiles can be generalised across relatively large swathes of the capital. It makes central to the investigation demographic factors such as class, ethnicity and age.

12 Tones of London uses a statistical analysis to select 12 out of London’s 623 council wards (not counting the City of London) in the hope that their sound profiles can be generalised across relatively large swathes of the capital. The London Sound Survey® 2014

This way, the primary social facts of class and ethnicity are put into the foreground of the project by determining where recordings are made. It’s a small start in moving away from the tropes of unusual or disappearing sounds, and towards how new ways of living sound in a city reproducing itself through great flows of capital and labour.
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The London Sound Survey belongs to the tradition of enthusiasts’ websites which strive to amass as much information as they can about their chosen subjects. It has an open-ended design since the boundaries of what can be learned about city life and history through sound have hardly been tested, far less determined. It’s probably benefited from how the internet has expanded people’s access to music and other media, and from that a greater willingness to experiment in what they choose to listen to.
Ian Rawes was born in 1965 and grew up in London where he’s spent most of his life. Since leaving school he’s worked as a printer, book designer, market stallholder, concert promoter and sound archivist. He now runs the London Sound Survey full-time and lives in a suburb of south-east London.
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