Spatial Audio: Perception and Experience

Spatial Audio Summer Seminar 2019

EMPAC’s Spatial Audio Summer Seminar offers unique insights into how sound can be shaped with technology to create spatial auditory experiences. Open to musicians, audio engineers, composers, programmers, and audiophiles of all kinds, the seminar consists of lectures, demonstrations, listening sessions, and performances providing the opportunity to be immersed in the excellent venues and outstanding audio systems at EMPAC.

This year’s seminar will feature extensive listening opportunities for participants to focus on the perceptual experience that these systems create. EMPAC’s studios and venues will be equipped with several large, high-end systems to directly compare different methods of spatializing audio, including high-order Ambisonic systems, high-density Wave Field Synthesis (WFS) configurations featuring hundreds of loudspeakers, as well as binaural audio streaming.

Focusing on the aesthetic function spatialized audio serves in a specific work, the seminar leaders will guide participants through the application of such systems to experimental, electroacoustic, and “contemporary classical” music, as well as virtual reality installations and soundscapes. This year’s seminar leaders include the composer and performer Natasha Barrett, who will perform a concert on the event’s opening night; Markus Noisternig, an expert in immersive 3D audio and researcher at the Paris-based Institute for Research and Coordination in Acoustics/Music (IRCAM); Chris Chafe, director of the Center for Computer Research in Music and Acoustics (CCRMA) at Stanford University; Brendan Baker, radio and podcast producer and sound designer; Bobby McElver, a sound designer and former EMPAC artist-in-residence; and members of the EMPAC audio team.

SCHEDULE

  • Thursday, July 18, 2019
  • 5:30–6:30PM — Arrival at EMPAC, buffet dinner
  • 6:30PMWelcome and venue walkthrough — Johannes Goebel
  • 7:30PMConcert: Natasha Barrett Pockets of Space Video and Oculus VR version
  • 9:30PMWolverine Marvel podcast with drinks and cheese — Brendan Baker
  • Friday, July 19, 2019
  • 9AM — Comparison of different spatial audio methods
    Concepts, Implementation, Perception — Markus Noisternig
  • 11:30AM Close your eyes and imagine what you want to hear.
    Research, Craft, and Reality in Creating Spatial Audio Environments — Chris Chafe
  • 1PMLUNCH
  • 2PMArtistic Goals, Aesthetics and Realization
    Detailed discussion of a work integrating spatialization — Markus Noisternig
  • 3:45PMSpatial Audio in Podcasts — Brendan Baker
  • 5PMThe EMPAC high-resolution modular loudspeaker array for Wave Field Synthesis
  • 6PMPresentation with Wave Field Synthesis Arrays above the audience — Bobby McElver
  • 7PMDINNER
  • 8:30PM — Public Concert: Natasha Barrett Electro Dream Space
  • Saturday, July 20, 2019
  • 9AM — Spatialization at IRCAM
    How technical development, artistic application and commercialization have influenced each other — Markus Noisternig
  • 10:30AMPanel and discussion
    Practical Issues of Spatialization in Performance, Production, and Installation
  • 12:30PMLUNCH
  • 2PMDEPART

COST

  • $120 Includes: all events, dinner on Thursday and Friday, lunch on Saturday.
  • $85 for students
  • Registration is FREE for RPI Faculty and Students with a valid RIN

WHAT TO BRING

Participants should bring headphones and a digital device that can connect to a local wireless network for streaming music.

LODGING

Participants are responsible for finding their own lodging. Please contact John Cook at the EMPAC box office for special rates at local hotels.

VIDEO ARCHIVE

Please enjoy the video documentation of last year's event.

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three screens with projections in the background of a band in the foreground of a black box studio.

[Switch~ Ensemble]

Christopher Chandler, Julie Herndon, Igor Santos, Jason Thorpe Buchanan

The [Switch~ Ensemble], specialists in multimedia performance and electro-acoustic music, develop and rehearse commissioned works by composers Christopher Chandler, Julie Herndon, Igor Santos, and Jason Thorpe Buchanan. The world premiere performances at the conclusion of the residency utilize the advanced spatial audio and video capabilities of EMPAC Studio 1—Goodman.

Main Image: [Switch~ Ensemble], Residency still, 2025. Courtesy of the artist. Photo: Jason Thorpe Buchanan.

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Stevie Manning, Xuan, Soraya Chemaly

We Will Not Be Composed

Soraya Chemaly, Stevie Manning, and Xuan

We Will Not Be Composed is a multimedia performance created in collaboration with saxophonist and composer Stevie Manning, author and activist Soraya Chemaly, and new media artist Xuan to challenge gendered perceptions of anger in America. 

During the residency, Xuan will bring original visual art, including moving image media, projections and on-site installations tailored to the premiere's score and themes and the unique presentation capabilities of Studio 1, while Manning will be rehearsing along with the other members of the six-musician ensemble. Additionally, they will work with EMPAC's Wave Field Synthesis and ambisonic audio systems to situate the recorded voices throughout the venue and will record the score to allow the work to travel as an installation in the future.

Main Image: We Will Not Be Composed. 2025. Pictured (l-r): Soraya Chemaly, Stevie Manning, Xuan. Courtesy of the Artists. Photos by Elizabeth Dranitzke, Elle Walton, David Lawrence.

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a woman holding a round mirror screaming with her eyes closed

We Will Not Be Composed

Stevie Manning, Soraya Chemaly, and Xuan

We Will Not Be Composed is a multimedia performance created in collaboration with saxophonist and composer Stevie Manning, author and activist Soraya Chemaly, and projection artist Xuan to challenge gendered perceptions of anger in America. Audience members simultaneously experience a live performance of a musical score by Manning featuring ondes Martenot, projections of light and texture from Xuan, and recorded voices of women expressing their experiences with and ideas about anger in immersive spatial audio. Whether these expressions of anger are startling, familiar, or provoking, audience members discover how collective recognition and expression of anger in the face of abusive power and domination can become a catalyst for justice and change.  

Drawing from jazz, experimental improvised music, and chamber music, the instrumentation of We Will Not Be Composed features the recorded voices and a six-piece ensemble with Manning on alto saxophone, Jessica Ackerley on electric guitar, Ha-Yang Kim and rocío sánchez on cello, Devon Gates on double bass, and Suzanne Farrin on the ondes Martenot.

Main Image: We Will Not Be Composed, 2025. Pictured: Stevie Manning. Courtesy the Artist. Photo: Elle Walton.

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three large screens with projections in a black box studio with musicians performing.

GRIDS

[Switch~ Ensemble]

The experimental music group [Switch~ Ensemble] brings to life three new multimedia works, combining EMPAC’s capabilities for spatial audio and multi-channel video with the virtuosic bravura of the ensemble’s seven members. Renowned composers Igor Santos, Julie Herndon, Jason Thorpe Buchanan, and Christopher Chandler incorporate elements of live audio and video signal processing to create stunning and impactful worlds of sights and sounds, full of vibrant musical detail and dynamic visual tableaus.

Main Image: [Switch~ Ensemble], Residency still, 2025. Courtesy of the artist. Photo: Jason Thorpe Buchanan.

Persepolis

Xenakis x Micah Silver

Sound artist and composer Micah Silver is in residence in EMPAC Studio 1—Goodman to produce and create a new version of Greek composer Iannis Xenakis’s 1971 landmark electronic music work Persépolis. Working with EMPAC’s stage technologies and audio teams, Silver introduces new dramaturgical elements to the piece specifically designed for the venue and for TOPOS Music Festival 2025 audiences.

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The Rose Dialogues and Interludes

Sarah Davachi

Composer Sarah Davachi takes advantage of the acoustical properties of the EMPAC Concert Hall and Studio 2 to record her work, The Rose Dialogues and Interludes, scored for two violas, cello, organ, and electronics. The composition is a featured world premiere at the TOPOS Music Festival 2025.

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Liberation Meditations: A Call

King Britt, Suzi Analogue, and Myles Ortiz-Green

For Liberation Meditations: A Call, electronic musicians and composers King Britt, Suzi Analogue, and Myles Ortiz-Green collaborate for an evening of music that is at turns ambient and driving. They draw from deep archives–historic speeches, interviews, fragments of collective memory–reframing and recomposing in performance as mantras grounded in the ethos of freedom. The result is an improvised, immersive, and spatial offering created especially for EMPAC Studio 1—Goodman and the TOPOS Music Festival 2025.

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Sarah Davachi at a manual

The Rose Dialogues & Interludes

Sarah Davachi

TOPOS presents the world premiere of a newly commissioned work by celebrated composer-performer Sarah Davachi. The Rose Dialogues, scored for two violas, cello, organ, and electronics, begins with the simplest of musical devices—the canon (or, which can colloquially be thought of as a round)—and spins an oceanic world of unexpected harmonies, haunting melodies, and formal surprises.

The topos of Davachi’s work is listening itself. Her music invites a deep attention, drawing us gently into the slow blossoming of her sonic landscapes. Within the veritable ocean of alternate tunings and temperaments, we are carried by waves of respite and repose, a darker pull that nudges us toward the unexpected.

Joined by musicians Eyvind Kang, Whitney Johnson (violas) and Lucy Railton (cello), Sarah Davachi’s piece moves slowly and with a precise ear for timbre and harmony. Its surprises feel hard-won, emerging from a rigor rooted in early Western compositional techniques: counterpoint, canon, heterophony, polyphony. And yet, her music is timeless, a dilated present that inches towards an uncertain yet harmonious future. A future that, in listening, seems to go on without end.

The premiere performance of Davachi’s The Rose Dialogues & Interludes at TOPOS is preceded by an onstage conversation with the composer.

Main Image: Sarah Davachi. Courtesy the artist.

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Micah Silver, Iannis Xenakis

Persepolis, Troy 2025

Iannis Xenakis realized by Micah Silver

A spectacle of sound and light, Greek composer Iannis Xenakis’s epic work Persepolis was originally commissioned by the Shiraz Festival in Iran, taking place in the ruins of the Temple of Darius in the Iranian desert on August 26, 1971. The performance—lasting over an hour starting at sunset—included two lasers, military searchlights, huge bonfires, 150 torch-bearing children, and six listening stations outfitted with eight-channel speakers, one for each track of Xenakis’ electroacoustic score.

Persepolis was the second of Xenakis’s Polytopes, large-scale works—from the Greek language poly meaning many and topos meaning place—monumental works that sought to fuse sound, light, colors, and architecture into a single, immersive site of sensory experience. For Xenakis, the topos was not just spatial but sensorial: an encounter with the totality of an intermedial artwork.

Reimagined for EMPAC Studio 1 by sound artist and composer Micah Silver, Persepolis becomes a magmatic mass of noise, snaking its way across a multitude of discrete audio channels. In many ways, Xenakis’s work is less a concert and closer to an extreme weather event: light, color, raw sound, and stagecraft combine to create a dramaturgy of turbulence, compression, and blistering immediacy, then release. Over the course of an hour, the piece overwhelms—and ultimately expands—the senses, rewarding those who listen and watch with openness.

Preceding the presentation of Persepolis on Saturday, August 30, a rare screening of director Pierre Andrégui’s documentary Xenakis Portrait 1971–72 will shed light on the piece and the strange and fascinating context in which the Polytope Persepolis was born.

Main Image: Micah Silver and Iannis Xenakis. 

Media

This album is disc III "Les Polytopes II" of the 5 LP / 5 CD box set "Electroacoustic Works" that celebrates the 100th anniversary of IANNIS XENAKIS (on May 29th, 2022), one of the most influential 20th century avant gardé composers.