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)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.
The Engineering Briefs at this Convention were selected on the basis of a submitted synopsis, ensuring that they are of interest to AES members, and are not overly commercial. These briefs have been reproduced from the authors' advance manuscripts, without editing, corrections, or consideration by the Review Board. The AES takes no responsibility for their contents. Paper copies are not available, but any member can freely access these briefs. Members are encouraged to provide comments that enhance their usefulness.