Multiple Description Audio Coding for Wireless Low-Frequency Sound Zones
| Autor: | Jan Ostergaard, Christian Sejer Pedersen, Mo Zhou, Niels de Koeijer, Martin Møller |
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| Rok vydání: | 2023 |
| Zdroj: | Aalborg University Østergaard, J, Pedersen, C S, Zhou, M, de Koeijer, N & Møller, M 2023, Multiple Description Audio Coding for Wireless Low-Frequency Sound Zones . in IEEE Data Compression Conference . IEEE Signal Processing Society . |
| DOI: | 10.1109/dcc55655.2023.00022 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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