Data processing: speech signal processing – linguistics – language – Speech signal processing – Psychoacoustic
Reexamination Certificate
2006-03-28
2006-03-28
Azad, Abul K. (Department: 2654)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Psychoacoustic
C704S500000
Reexamination Certificate
active
07020603
ABSTRACT:
A system and method of encoding an audio stream includes generation of a distortion threshold templates database that is accessible by a perceptual audio encoder. The audio encoder utilizes the threshold templates to operate a compression algorithm, obviating the need to implement a psycho-acoustic model to generate a distortion threshold for each compression operation. A similar templates database may be used in a transcoding operation, again bypassing a psycho-acoustic modeling operation and promoting system efficiency.
REFERENCES:
patent: 6499008 (2002-12-01), Miet
patent: 6577996 (2003-06-01), Jagadeesan
patent: 2001/0047256 (2001-11-01), Tsurushima et al.
Madisetti et al.; Digital Signal Processing Hand Book; IEEE Press; 1997; pp. 40-1 to 40-17.
Brandenburg, Karlheinz, “Introduction to Perceptual Coding,”Collected Papers on Digital Audio Bit-Rate Reduction, pp. 23-31, manuscript received Mar. 13, 1996.
Azad Abul K.
Pedersen-Giles Alan L.
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