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Robustness Issues in Multi-View Audio Coding

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This paper studies the problem of noise unmasking when multiple spatial filtering options (multiple views) are required from multi-microphone recordings compressed with lossy coding. The envisaged application is re-use and post-processing of user-created content. A potential solution based on inter-channel prediction is outlined, that would allow also subtractive downmix options without excessive noise unmasking. The simple case of two relatively closely spaced omni-directional microphones and mono downmix is used as an example, experimenting with real-world recordings and MPEG-1 Layer 3 coding.

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