Peter Svensson - Room Acoustic Conditions for a Special Case of Coupled rooms - Video Conferencing
A video conferencing situation connects two rooms and is therefore a special case of coupled rooms. Thanks to efficient echo cancellation systems, feedback can largely be ignored for the analysis of the acoustical combinations. The simplified model of the sound transmission connects the two rooms via the convolution of the two room impulse responses. The resulting reverberation will be non-exponential, so the relationships between parameters such as reverberation time and clarity will be different from the classical single-room situation. This paper will use a simple impulse response model with a direct sound plus an exponential reverberation, which facilitates the analysis of the connected-room situation, and the comparison with classical coupled-room analysis. A theoretical study of the influence of parameters such as microphone directivity and reverberation time will be presented, as well as listening test results, and comparison with measurements for some of these aspects. The influence of spatial aspects will be discussed.
This event will be live streamed: https://www.youtube.com/watch?v=X2_uYu69dy0
Peter Svensson has been professor of electroacoustics at NTNU, Trondheim, since 1999. He got his PhD on electroacoustical reverberation enhancement from Chalmers University of Technology, Gothenburg, Sweden, and has spent doc periods, and sabbaticals at the University of Waterloo, Kobe University, Rensselaer Polytechnical Institute, and Reading University. His research interests include computer modeling of room acoustics, with a special focus on edge diffraction models, as well as 3D audio techniques based on spherical array processing (Higher-order Ambisonics), room acoustical measurement techniques, and perceived quality in various audio applications.