A spatial filtering approach for Directional Audio Coding
Kallinger M, Ochsenfeld H, Del Galdo G, Kuech F, Mahne D, Schultz-Amling R, Thiergart O (2009)
Publication Type: Conference contribution
Publication year: 2009
Book Volume: 3
Pages Range: 1155-1164
Conference Proceedings Title: 126th Audio Engineering Society Convention 2009
Event location: DEU
ISBN: 9781615671663
Abstract
In hands-free telephony, spatial filtering techniques are employed to enhance intelligibility of speech. More precisely, these techniques aim at reducing the reverberation of the desired speech signal and attenuating interferences. Additionally, it is well-known that the spatially separate reproduction of desired and interfering sources enhance intelligibility of speech. For the latter task, Directional Audio Coding (DirAC) has proven to be an efficient method to capture and reproduce spatial sound. In this contribution, we propose a spatial filtering processing block, which works in the parameter domain of DirAC. Simulation results show that compared to a standard beamformer the novel technique offers significantly higher interference attenuation, while introducing comparably low distortion of the desired signal. Additional subjective tests of speech intelligibility confirm the instrumentally obtained results.
Involved external institutions
Germany (DE)How to cite
APA:
Kallinger, M., Ochsenfeld, H., Del Galdo, G., Kuech, F., Mahne, D., Schultz-Amling, R., & Thiergart, O. (2009). A spatial filtering approach for Directional Audio Coding. In 126th Audio Engineering Society Convention 2009 (pp. 1155-1164). DEU.
MLA:
Kallinger, Markus, et al. "A spatial filtering approach for Directional Audio Coding." Proceedings of the 126th Audio Engineering Society Convention 2009, DEU 2009. 1155-1164.
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