Multiple Description Audio Coding for Wireless Low-Frequency Sound Zones
- Resource Type
- Conference
- Authors
- Ostergaard, Jan; Pedersen, Christian; Zhou, Mo; Koeijer, Niels de; Moller, Martin
- Source
- 2023 Data Compression Conference (DCC) DCC Data Compression Conference (DCC), 2023. :140-149 Mar, 2023
- Subject
- Communication, Networking and Broadcast Technologies
Signal Processing and Analysis
Wireless communication
Closed-form solutions
Finite impulse response filters
Audio coding
Filtering
Packet loss
Robustness
Multiple description coding
sound zones
audio coding
wireless streaming
- Language
- ISSN
- 2375-0359
We present a joint design of sound zone control filters and robust audio coding for wireless low frequency sound zones. The audio signal is filtered using sound zone control filters and encoded using a multiple-description coder. The control filters and the multiple-description coder are combined in a nested loop. The inner loop performs filtering for sound zone control and generates multiple descriptions using oversampling and closed-loop prediction. The outer loop performs noise shaping and guarantees a trade-off between robustness and quality of the descriptions. A closed-form expression for the optimal sound-zone control filters are provided, and a simulation study demonstrates that even at moderate packet loss rates, a significant gain is possible compared to not using multiple descriptions.