1. EXAMPLES OF POLYAURAL PROCESSING
Richard M. Stern, Evandro Gouvêa
Robust Speech Recognition Group
Carnegie Mellon University
Telephone: (412)
Fax: (412)
Examples from Interspeech 2007 Paper

2. Some implementation details
11 simulated mics in Flanagan-type logarithmic array
Two speakers:
One arrives “on axis” (zero delay between sensors)
Other arrives with delays of 1, 2, 4, and 8 samples:
No reverberation added
Polyaural processing:
Bandpass filtering followed by nonlinear rectification
Cross-correlation with lag at “look direction”
Bandpass filtering followed by recombination across frequency

3. Examples of polyaural processing
Brian Stef
Individual speakers
Combined at zero dB SIR
Delay-and-sum beamforming
Polyaural separation, no straightness wtg
Polyaural separation with straightness wtg