Stream segregation for stereo signals

Details Stream segregation for stereo signals Stream segregation for stereo signals

2007-08-14

2007-08-14

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Including frequency control

Having crossover filter

Reexamination Certificate

active

10163168

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; computing a short-time similarity measure between the left channel and the right channel; classifying portions of the signals having similar panning coefficients according to the short-time similarity measure; 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.

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Allen, et al, “Multimicrophone signal-processing technique to remove room reverberation from speech signals” J. Accoust. Soc. Am., vol. 62, No. 4, 1977, pp. 912-915.
Avendano Carlos, et al, “Ambience Extraction and Synthesis from Stereo Signals for Multi-Channel Audio Up-Mix”, IEEE Int'l Conf. On Acoustics, Speech & Signal Processing, May 2002.
Avendano Carlos, et al, “Frequency Domain Techniques for Stereo to Multichannel Upmix”, AES 22ndInternational Conference on Virtual, Synthetic and Entertainment Audio no date provided.
Baumgarte, Frank, et al, “Estimation of Auditory Spatial Cues for Binaural Cue Coding”, IEEE Int'l. Conf. On Acoustics, Speech and Signal Processing, May 2000.
Begault, Durand R., “3-D Sound for Virtual Reality and Multimedia”, A P Professional, pp. 226-229. no date provided.
Blauert, Jens, “Spatial Hearing The Psychophysics of Human Sound Localization”, The MIT Press, pp. 238-257. no date provided.
Dressler, Roger, “Dolby Surround Pro Logic II Decoder Principles of Operation”, Dolby Laboratories, Inc., 100 Potrero Ave., San Francisco, CA 94103. no date provided.
Faller, Christof, et al, “Binural Cue Coding: A Novel and Efficient Representation of Spatial Audio”, IEEE Int'l. Conf. On Acoustics, Speech & Signal Processing, May 2002.
Gerzon, Michael A., “Optimum Reproduction Matrices for Multispeaker Stereo”, J. Audio Eng. Soc., vol. 40, No. 78, Jul. Aug. 1992.
Holman, Tomlinson, “Mixing the Sound” Surround Magazine, pp. 35-37, Jun. 2001.
Jot, Jean-Marc, et al, “A Comparative Study of 3-D Audio Encoding and Rendering Techniques”, AES 16thInt'l. Conf. On Spatial Sound reproduction, Rovaniemi, Finland 1999.

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