Electrical audio signal processing systems and devices – Including amplitude or volume control – With amplitude compression/expansion
Patent
1993-02-16
1996-11-26
Kuntz, Curtis
Electrical audio signal processing systems and devices
Including amplitude or volume control
With amplitude compression/expansion
381101, 381107, H03G 700
Patent
active
055794041
ABSTRACT:
A signal processing system comprising components such as split-band perceptual coders can receive a peak amplitude limited input audio signal and can process the signal in such a manner that the processed signal preserves the apparent loudness of the input signal but is no longer peak-amplitude limited. In one embodiment, upsampling is used in estimating the resultant peak amplitude and gain factors established in response to the estimated peak amplitude are applied to one or more frequency subbands of the processed signal.
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Bosi-Goldberg Marina
Davidson Grant A.
Fielder Louis D.
Gundry Kenneth J.
Dolby Laboratories Licensing Corporation
Gallagher Thomas A.
Kuntz Curtis
Lathrop David N.
Lee Ping W.
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