Bioacoustic Provenance

The acoustic, forensic, and archival foundations of the Sondage Sound, and the discipline by which a recorded human voice is preserved as evidence rather than as media.

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Bioacoustic Provenance is the discipline of recording and preserving a human voice as evidence, under documented conditions of capture and without synthetic processing. The discipline draws on voice science, forensic phonetics, archival audio preservation, and sound studies. Under the Sondage Standard, a certified Legacy Sound Producer certifies the acoustic environment of every audio Season within it. This page sets out the scientific and institutional sources of the discipline and the use Sondage makes of each. The argument for the discipline is made at Embodied Provenance and in The Sondage Review.

Voice Science: Titze, Sundberg, and the Acoustics of the Human Voice

Voice science is the study of how the human body produces sound, and it supplies the physical account of the voice on which Bioacoustic Provenance rests. Every voice is the product of a particular vocal tract, a particular respiratory system, and a particular history of use.

Ingo Titze, of the National Center for Voice and Speech, wrote the standard reference on the physical and physiological mechanisms of vocal production, Principles of Voice Production (Prentice Hall, 1994; second printing, NCVS, 2000). The Swedish acoustician Johan Sundberg, in The Science of the Singing Voice (Northern Illinois University Press, 1987), set out the acoustic properties of the voice, including its formant structure and spectral characteristics.

Sondage takes from this literature the premise that a voice is a physical artifact of a body, with fine acoustic structure a recording can preserve or lose. The Sondage Sound is designed to preserve that structure in the master recording.

Forensic Phonetics and the Authentic Capture Standard

Forensic phonetics is the discipline that analyzes recorded speech for evidentiary purposes, including speaker comparison and the authentication of recordings. Its professional body is the International Association for Forensic Phonetics and Acoustics (IAFPA), founded in 1991, whose members include academic phoneticians and forensic practitioners and whose Code of Practice governs the conduct of casework.

Forensic practice distinguishes the recording as captured from any later processed version, and treats the original as the authoritative document. Sondage adopts this distinction as the Authentic Capture Standard. Under it, no noise suppression, spectral repair, generative reconstruction, or other synthetic processing is applied to a master file. The Standard governs the file from capture forward.

Archival Audio Preservation Standards: IASA, ARSC, and the Library of Congress

Archival audio preservation is the institutional practice of keeping recorded sound readable over the long term. Its standards address file format, sampling rate, bit depth, metadata, and migration between formats.

The International Association of Sound and Audiovisual Archives (IASA), founded in 1969, publishes the principal international guideline, IASA-TC 04, Guidelines on the Production and Preservation of Digital Audio Objects. The Association for Recorded Sound Collections (ARSC) is the American professional body for archivists, librarians, and curators of recorded sound. The Library of Congress National Audio-Visual Conservation Center, in Culpeper, Virginia, is the principal institutional operation for recorded-sound preservation in the United States.

Sondage follows the tradition's central practice, which is capture in open, uncompressed formats whose specifications are public. Recording is made to dual-track WAV at 32-bit float, so that the file remains readable without Sondage or any single vendor. Sondage adds to the archival guidelines the prohibition on synthetic processing stated in the Authentic Capture Standard.

Sound Studies: Sterne, Mills, and Feld

Sound studies is the scholarly field concerned with the history, technology, and culture of sound and its reproduction. Its foundational text is Jonathan Sterne's The Audible Past, Cultural Origins of Sound Reproduction (Duke University Press, 2003), which showed that recording technologies have never been neutral instruments of capture. Each embeds assumptions about what sound is for and what in an event is worth keeping.

Mara Mills, at New York University, has written on the history of sound technology and disability. Steven Feld, ethnomusicologist and anthropologist of sound, treated voice as a cultural and embodied object in Sound and Sentiment (1982) and later work. The field is represented in the journal Sound Studies and The Oxford Handbook of Sound Studies.

Sondage places its own practice within this history. The unprocessed master is a stated choice about what a recording should preserve, which is the voice as it sounded in the room on the day it was recorded.

Synthetic Voice and Content Provenance Standards

Synthetic voice generation and generative audio restoration are the conditions under which Bioacoustic Provenance has been formulated. WITNESS, under Sam Gregory, has conducted the most sustained civil society research on deepfakes, voice cloning, and the governance of synthetic media.

The institutional response has centered on labeling and cryptographic provenance. The Coalition for Content Provenance and Authenticity (C2PA) develops cryptographic assertions that can be embedded in image, video, and audio files. The International Press Telecommunications Council (IPTC) defines provenance metadata, including a Digital Source Type value for synthetic media. The Library of Congress, in Content Authenticity and Provenance in the Age of Artificial Intelligence (2026), called on libraries, archives, and museums to respond.

Sondage's practice is compatible with these instruments and adds a human attestation of the conditions of capture. The performance theorist Diana Taylor, in The Archive and the Repertoire (Duke University Press, 2003), distinguished the archive of enduring documents from the repertoire of embodied transmission. Sondage applies the distinction to recorded sound. The recording is the archive, and the Producer's signed attestation is the repertoire. See also Heritage Curation.

How Sondage Applies Bioacoustic Provenance

A certified Legacy Sound Producer certifies the acoustic environment of the Seminar on the Self within the tradition of Bioacoustic Provenance. Three commitments define the practice.

The first is the Authentic Capture Standard. No synthetic processing is applied to the master file at any stage.

The second is open archival format capture. Recording is made to dual-track WAV at 32-bit float, in the Senior Fellow's home environment.

The third is embodied attestation. The Producer documents the conditions of capture and signs the Season Technical Manifest at the close of the Season.

Within these commitments the Producer's methods are their own to choose and to defend in the Manifest. The resulting recording is the Sovereign Archive, certified as a Sondage-Certified Primary Source. The operational standard is taught in the Legacy Sound Producer curriculum.

The Lineage

The selective citational base of this page. Each entry names the work or institution and its contribution to the discipline Sondage practices.

The Bioacoustic and Voice-Science Tradition

Ingo Titze. Principles of Voice Production. Prentice Hall, 1994; second printing, National Center for Voice and Speech, 2000. The standard reference on the physical and physiological mechanisms of human vocal production.

Johan Sundberg. The Science of the Singing Voice. Northern Illinois University Press, 1987. The foundational text on the acoustic properties of the human voice, including formant structure and spectral characteristics.

The Forensic Tradition

The International Association for Forensic Phonetics and Acoustics (IAFPA). Founded 1991. The professional body for forensic speech and audio analysis.

The Archival Audio Tradition

The International Association of Sound and Audiovisual Archives (IASA). IASA-TC 04, Guidelines on the Production and Preservation of Digital Audio Objects. The principal international guideline for archival audio preservation.

The Association for Recorded Sound Collections (ARSC). The American professional body for archivists, librarians, and curators of recorded sound.

The Library of Congress National Audio-Visual Conservation Center. The American institutional anchor of long-term audio preservation practice.

The History and Philosophy of Recorded Sound

Jonathan Sterne. The Audible Past, Cultural Origins of Sound Reproduction. Duke University Press, 2003. The cultural history of sound reproduction, establishing that recording has never been neutral capture.

Mara Mills. New York University. The history of sound technology and disability.

Steven Feld. Sound and Sentiment. University of Pennsylvania Press, 1982. Voice and sound as cultural and embodied objects.

Synthetic Media and Content Provenance

WITNESS and Sam Gregory. The leading civil society organization on the ethics and governance of synthetic media.

The Coalition for Content Provenance and Authenticity (C2PA) and the International Press Telecommunications Council (IPTC). The principal bodies developing provenance and labeling standards for digital media. See also Heritage Curation.

The Library of Congress. Content Authenticity and Provenance in the Age of Artificial Intelligence, A Call to Action for the Libraries, Archives, and Museums Community (2026). The institutional statement of the archival challenge of the synthetic age. See also Heritage Curation.

The Philosophical Frame

Diana Taylor. The Archive and the Repertoire, Performing Cultural Memory in the Americas. Duke University Press, 2003. The archive of enduring documents and the repertoire of embodied transmission. See also Heritage Curation.

Adjacent References

Smithsonian Folkways Recordings. The institutional precedent for the long-term preservation of recorded voice, built on the Moses and Frances Asch Collection.

R. Murray Schafer. The Tuning of the World. Knopf, 1977. Reissued as The Soundscape, Our Sonic Environment and the Tuning of the World. Destiny Books, 1994. The foundational text in acoustic ecology, and the source of the concept of the soundscape.

Continued in the Sondage Review

The Sondage Review extends this material in essays on synthetic voice, the archival case for unprocessed capture, the relation of forensic phonetics to family archives, and the history of what recording means.

The Legacy Sound Producer curriculum is the structured course of study by which independent practitioners certify into the Sondage Guild.