AES Technical Committee

Audio Forensics

Chair:    Jeff M. Smith      Send Email
Vice Chair:    Eddy Bogh Brixen      Send Email
Forum:    Committee Discussion Forum


Current Areas Of Work

  • To extend knowledge of audio forensic practice and techniques world-wide
  • To identify areas requiring additional research
  • To bring together professionals and students in the area of audio forensics
  • To encourage publication of papers, and to arrange tutorials, conferences and workshops, within the AES
  • To support standards committees on forensic audio via fostering of refereed journal publications

Recent/Planned Activities

The next AES International Conference on Audio Forensics will be held 2019 June 18-20 in Porto, Portugal. Many details forthcoming.

Proceedings previous audio forensics conferences (26, 33, 39, 46, 54, 2017) are available here: http://www.aes.org/publications/conferences/

The next meeting of the Technical Committee on Forensic Audio will meet Friday, Oct 19th from 2-3pm at the 2018 NY Convention.

Mission Statement

Audio Forensics refers to engineering and scientific analysis, evaluation and presentation of audio and acoustic evidence in a judicial inquiry normally leading towards a presentation in court. The complex challenges faced by the field transcend borders and jurisdictions, and becomes increasingly complex with the proliferation of new types of digital media. In order to establish a reliable scientific basis for the procedures and analysis of the outcomes of audio forensic analysis, the technical committee meets at AES conventions to plan conferences, workshops and tutorials; to encourage dissemination of scientific information through peer-reviewed journal and conference publications and posters; and to communicate educational opportunities in the field. Presently, the technical committee meetings for audio forensics are open to all attendees.

Emerging Trends in Audio Forensics

Last updated: 10/31/2015

General Considerations -

Forensic audio has important applications in law and investigations. These continue to grow as the ability to record and share digital media proliferates. Therefore, it is important for the practitioner working with forensic audio to be trained in and apply processes related to proper evidence handling and laboratory procedures. Analog audio evidence, once commonly cassette and micro-cassette tapes, make up an increasingly small percentage of cases. As such, digital audio evidence, which in practice is closely related to and often times generated by computer forensics investigations, requires handling practices such as imaging physical digital media, hashing file duplicates, authenticating recordings, and recovering and/or repairing corrupt or carved files.

Modern challenges for the forensic audio examiner have expanded to include dealing with evidence from social networks and sharing websites such as YouTube and Facebook. These pose unique challenges in attributing provenance due to processing applied automatically by the hosting site. Additionally, growing concern for privacy rights has led citizens and providers of Internet services to question authorities law enforcement entities have in requesting and accessing digital media hosted on these sites. Similarly, mobile phone manufacturers have adopted policies and operating system designs resistant to collection of probative material and using "backdoor" access to password protected devices. As social media awareness and use continue to evolve, so will public and commercial policies related to privacy rights.

The use of probabilistic methods in the presentation of scientific evidence is of increasing interest to the forensic sciences as a whole. As a result, we anticipate seeing the integration of methods and techniques in forensic audio employed within a probabilistic framework such as Bayesian likelihood, which enjoys application in forensic speaker comparison.

Difficulty in the area of audio enhancement continues due to lossy data compression common in small digital recorders, data compression and bandwidth limited signals in telecommunications, and non-ideal recording environments common to surveillance and security. In the presence of heavy data compression, classical algorithm designs for noise reduction filters are challenged and thereby require that new techniques to be developed.

AES Technical Committee on Audio Forensics -

Numerous papers on audio forensics appear in the Journal of AES and are presented at AES Conventions each year. Additionally, there have been 6 AES Conferences on Audio Forensics: 2005, 2008, 2010, 2012, 2014, 2017. The next conference is being considered for 2019. Additionally, regular workshops and tutorials organized by the TC-AF exploring these and many other emerging trends appear at AES Conventions in the US and Europe each year.



Meeting Report:

These documents do not necessarily express the official position of the AES on the issues discussed at these meetings, and only represent the views of committee members participating in the discussion. Any unauthorized use of these publications is prohibited. Authorization must be obtained from the Executive Director of the AES: Email, Tel: +1 212 661 8528, Address: 551 Fifth Ave., Suite 1225, New York, New York 10176, USA.

2018-10-20     145th Convention Meeting Report
Description: Minutes from TC-AF Meeting

2018-5-25     144th AES Convention TC-AF Meeting Report
Description: May 208 TC-AF meeting minutes

2014-10-16     137th AES Convention TC-AF Meeting Report
Description: Minutes from TC-AF meeting in LA on Oct. 11, 2014

2014-5-23     135th AES Convention TC-AF Meeting Report
Description: TC-AF meeting minutes from the 135th AES Convention, New York, Oct. 2013

2013-9-3     134th Convention TC-AF Meeting Report
Description: May 2013 TC-AF meeting minutes

2013-9-3     133rd Convention TC-AF Meeting Report
Description: October 2012 TC-AF meeting summary

2013-9-3     132nd Convention TC-AF Meeting Report
Description: April 2012 meeting minutes

2013-9-3     131st Convention TC-AF Meeting Report
Description: October 2011 TC-AF meeting minutes

2013-9-3     130th Convention TC-AF Meeting Report
Description: May 2011 meeting minutes

2013-9-3     129th Convention TC-AF Meeting Report
Description: November 2010 TC-AF meeting minutes

2013-9-3     128th Convention TC-AF Meeting Report
Description: May 2010 TC-AF meeting minutes

2013-9-3     127th AES Convention TC-AF Meeting Report
Description: October 2009 TC-AF meeting minutes

2013-9-3     125th AES Convention TC-AF Meeting Report
Description: Oct. 2008 TC-AF meeting minutes


Committee Members

 Gordon Reid  Rob Maher  Eddy Bogh Brixen 
 Durand Begault  Douglas S. Lacey  Robert-Eric Gaskell 
 Bruce Koenig  Anibal Ferreira  J. Keith McElveen 
 Marisa Dery  Jeff M. Smith  Catalin Grigoras 
 Christian Kuke  Phil Manchester  Daniel Rappaport 
 Dan Nyberg 

To request membership in this Technical Committee please email the Chair by using the link above.

AES - Audio Engineering Society