An output-SNR-maximizing linear combination of per-microphone RTF estimates improves binaural MVDR beamforming with multiple external microphones, yielding 10.7 dB binaural SNR improvement versus 10.4 dB for covariance whitening in one reverberant scenario.
This can, e.g., be assumed for a diffuse noise field when the external microphones are spatially separated from each other and from the head-mounted microphones
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RTF-steered binaural MVDR beamforming incorporating multiple external microphones
An output-SNR-maximizing linear combination of per-microphone RTF estimates improves binaural MVDR beamforming with multiple external microphones, yielding 10.7 dB binaural SNR improvement versus 10.4 dB for covariance whitening in one reverberant scenario.