Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion
Patent
1997-09-27
2000-04-25
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
704501, H04B 166
Patent
active
060555025
ABSTRACT:
An adaptive audio signal compression computer system corrects multiple input audio streams, such as digital multichannel audio streams from various audio sources, for equalization deficiencies caused primarily by attenuation factors experienced by a listener's human ear. A compression stage (filter stage) adaptively compresses (filters) an input audio stream by selecting the ear response data that includes a plurality of selectable sets of filter coefficients wherein each set of filter coefficients corresponds to an inverse audible listening response curve for a predetermined audio volume level. When available from an audio source, the system provides audio source type data to an adaptive compression stage and also generates a compression control signal in response to the source type data to control the compression. Listening environment data is also used to generate control parameters for the compression stage so that compression can be dynamically varied based on changing surrounding environmental circumstances.
REFERENCES:
patent: 4064364 (1977-12-01), Veale
patent: 4152649 (1979-05-01), Choquet
patent: 4352190 (1982-09-01), Hullwegen
patent: 4769848 (1988-09-01), Eberbach
patent: 4910779 (1990-03-01), Cooper et al.
patent: 5283819 (1994-02-01), Glick et al.
patent: 5412691 (1995-05-01), Ginzburg et al.
patent: 5438623 (1995-08-01), Begault
patent: 5583560 (1996-12-01), Floriin et al.
patent: 5594509 (1997-01-01), Florin et al.
patent: 5602928 (1997-02-01), Eriksson et al.
patent: 5677994 (1997-10-01), Miyamori et al.
patent: 5682463 (1997-10-01), Allen et al.
patent: 5737389 (1998-04-01), Allen
patent: 5737720 (1998-04-01), Miyamori et al.
patent: 5742773 (1998-04-01), Blomfield-Brown et al.
patent: 5819215 (1998-10-01), Dobson et al.
patent: 5873065 (1999-02-01), Akagiri et al.
patent: 5909664 (1999-06-01), Davis et al.
ATI Technologies Inc.
Hudspeth David R.
Lerner Martin
LandOfFree
Adaptive audio signal compression computer system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive audio signal compression computer system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive audio signal compression computer system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1001736