Stream segregation for stereo signals

Electrical audio signal processing systems and devices – Including frequency control – Having crossover filter

Reexamination Certificate

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Reexamination Certificate

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07315624

ABSTRACT:
Separating a source in a stereo signal having a left channel and a right channel includes transforming the signal into a short-time transform domain; classifying portions of the signals having similar panning coefficients; segregating a selected one of the classified portions of the signals corresponding to the source; and reconstructing the source from the selected portions of the signals.

REFERENCES:
patent: 5666424 (1997-09-01), Fosgate et al.
patent: 5890125 (1999-03-01), Davis et al.
patent: 6021386 (2000-02-01), Davis et al.
patent: 6405163 (2002-06-01), Laroche
patent: 6430528 (2002-08-01), Jourjine et al.
patent: 2003/0026441 (2003-02-01), Faller
patent: PCT/US00/26601 (2001-04-01), None
Jourjine et al., Blind Separation of Disjoint Orthogonal Signals: Demixing N Sources from 2 Mixtures, IEEE International Conference on Acoustics, Speech and Signal Processing, vol. 5, pp. 2985-2988, Apr. 2000.
Eric Lindeman, Two Microphone Nonlinear Frequency Domain Beamformer for Hearing Aid Noise Reduction, In Proc. IEEE ASASP Workshop on app. of sig. proc. to audio and acous., New Paltz NY 1995.
Baumgarte et al., Estimation of Auditory Spatial Cues for Binaural Cue Coding, IEEE International Conference on Acoustics, Speech and Signal Processing, May 2002.

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