Electrical audio signal processing systems and devices – Noise or distortion suppression – Spectral adjustment
Reexamination Certificate
2011-03-22
2011-03-22
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Noise or distortion suppression
Spectral adjustment
C702S190000
Reexamination Certificate
active
07912232
ABSTRACT:
A first embodiment of the invention provides a method and apparatus for attenuating or amplifying voice or other signals present on a stereo audio recording that uses frequency domain techniques to calculate a time- and frequency-dependent gain factor, based on the input panning and phase information in the recording, and optionally outputs the original recording's phase and/or panning information. A further embodiment of the invention provides a method and apparatus for attenuating or amplifying voice or other signals present on a stereo audio recording that uses training-based frequency domain techniques in each frequency band to calculate a time- and frequency-dependent gain factor, based on the input panning, phase offset, and magnitude information in the recording, and optionally outputs the original recording's phase and/or panning information.
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Chin Vivian
Fahnert Friedrich
Glenn Michael A.
Glenn Patent Group
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