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Engineering Brief

STEAK: Backward-Compatible Spatial Telephone Conferencing for Asterisk

Authors: Guse, Dennis; Haase, Frank

AES Convention 141 · Paper 282 · September 2016

Abstract

In this paper we present our implementation of a telephone conferencing system that renders a spatial representation via binaural synthesis. The implementation extends the open-source software Asterisk and complies with established Voice-over-IP standards. The implementation only requires clients to be capable of receiving and reproducing the rendered binaural signals (two channels). Furthermore, the implementation is backward-compatible as clients not fulfilling these requirements are provided with mono-rendered signals without additional spatial information. The implemented system is released as open-source software and will enable researchers to investigate the (dis-)advantages of spatial conferencing under real-world conditions. The project name is Spatial TelephonE conferencing for AsterisK (STEAK)

Details

Published in
AES Convention 141
AES Convention
141
Paper number
282
Publication date
September 6, 2016
Session subject
Spatial Audio & Transducers
Affiliation
Technische Universität Berlin, Berlin, Germany (See document for exact affiliation information.)
Type
Engineering Brief