| Paper: | AE-P1.12 | ||
| Session: | Loudspeaker and Microphone Array Signal Processing | ||
| Time: | Wednesday, May 19, 13:00 - 15:00 | ||
| Presentation: | Poster | ||
| Topic: | Audio and Electroacoustics: Loudspeaker and Microphone Array Signal Processing | ||
| Title: | WAVE-DOMAIN ADAPTIVE FILTERING: ACOUSTIC ECHO CANCELLATION FOR FULL-DUPLEX SYSTEMS BASED ON WAVE-FIELD SYNTHESIS | ||
| Authors: | Herbert Buchner; Universität Erlangen-Nürnberg | ||
| Sascha Spors; Universität Erlangen-Nürnberg | |||
| Walter Kellermann; Universität Erlangen-Nürnberg | |||
| Abstract: | For high-quality multimedia communication systems such as teleconferencing or virtual reality applications, multichannel sound reproduction is highly desirable. While progress has been made in stereo and multichannel acoustic echo cancellation (MCAEC) in recent years, the corresponding sound reproduction systems still imply a restrained listening area, the sweet spot. A volume solution for 3D sound in a large listening space is offered byWave Field Synthesis (WFS) or ambisonics, where arrays of loudspeakers generate a prespecified soundfield. However, before this new technique can be utilized for full-duplex systems, an efficient solutionto the MCAEC problem has to be found. This paper presents a novel approach that extends the current state of the art of MCAEC and transform-domainadaptive filtering by reconciling the flexibility of adaptive filtering and the underlying physics of acoustic waves in a systematic and efficient way. To achieve this, the new framework of wave-domain adaptive filtering (WDAF) takes into account a more detailed consideration of the spatial dimensions by the closely spaced arrays which offers a significant increase in insight into the problem. Experimental results with a 32-channel AEC verify the concept for both, simulated and actually measured room acoustics. | ||
| Back | |||
Home -||-
Organizing Committee -||-
Technical Committee -||-
Technical Program -||-
Plenaries
Paper Submission -||-
Special Sessions -||-
ITT -||-
Paper Review -||-
Exhibits -||-
Tutorials
Information -||-
Registration -||-
Travel Insurance -||-
Housing -||-
Workshops