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Schedule as of Oct 11, 2022 - subject to change

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Thursday, October 27 • 11:15am - 11:30am
An automatic audio mixing system for teleconferencing applications

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This paper describes an automatic mixing system for improving audio quality in teleconferencing applications. The work was focused on applying audio effects such as multitrack level balancing, spatialization, and equalization in order to reduce speech masking, thus allowing simultaneous speakers to be heard in a teleconference. The system used the ITU-R BS.1770 loudness measurement method and cross-adaptive audio effects to achieve average level balancing. A novel Force-directed model was implemented to automatically set the virtual position of each source. The equalization method was based on spectral decomposition techniques and a target of equal average perceptual loudness in each frequency band. Subjective evaluation was performed in the form of a multi-stimulus listening test, which indicated that the proposed automatic mixing system could compete with a manual mix by an experienced sound engineer.

Speakers
XL

Xiaojing Liu

Xiaojing Liu is a sound engineer and PhD Student at Queen Mary University of London, where she studies automatic audio mixing for teleconferencing, a project supported by the CSC. Xiaojing's research focuses on the development of autonomous mixing methods for enhanced audio clarity... Read More →
AM

Angeliki Mourgela

Sound Engineer/ PhD Student, Queen Mary University of London
Angeliki Mourgela is a sound engineer and PhD Student at Queen Mary University of London, where she studies intelligent broadcast audio mixing for hearing loss, a project supported by the BBC's Research & Development department and the EPSRC. Angeliki's research focuses on the development... Read More →
avatar for Joshua Reiss

Joshua Reiss

AES President, Queen Mary University of London
Josh Reiss is Professor of Audio Engineering with the Centre for Digital Music at Queen Mary University of London. He has published more than 200 scientific papers (including over 50 in premier journals and 6 best paper awards) and co-authored two books. His research has been featured... Read More →


Thursday October 27, 2022 11:15am - 11:30am EDT
Online Papers
  Applications in Audio
  • badge type: ALL ACCESS or ONLINE