Clean Audio for TV broadcast: An Object-Based Approach for Hearing-Impaired Viewers - April 2015
Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
Sound Board: Food for Thought, Aesthetics in Orchestra Recording - April 2015
On-The-Fly Auditory Masking for Scalable VoIP Bridges
Endpoints or conference servers of current audio-conferencing solutions use all the audio frames they receive in order to mix them into one final aggregate stream. However, at each time-instant, some of this content may not be audible due to auditory masking. Hence, sending corresponding frames through the network leads to a loss of bandwidth, while decoding them for mixing or spatial audio processing leads to increased processor load. In this paper, we propose a solution based on an efficient on-the-fly auditory masking evaluation. Our technique allows prioritizing audio frames in order to select only those audible for each connected client. We present results of quality tests showing the transparency of the algorithm. We describe its integration in a France Telecom audio conference server. Tests in a 3D game environment with spatialized chat capabilities show a 70% average reduction in required bandwidth, demonstrating the efficiency of our method.
Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.