MDCP: Patent Abstact US05142656: Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio

US05142656 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio

Assignee Dolby Laboratories Licensing Corporation

Assign./Filed Aug. 25, 1992/ Nov. 4, 1991

Inventors Fielder; Louis D., Davidson; Grant A.

Summary Fancy adaptive bit allocation method using fixed offsets (seems a lot like the one ATRAC uses). Appears to be large overlap with US05109417.

Abstract A transform encoder, a transform decoder, and a transform encoder/decoder system employ adaptive bit allocation wherein each code word representing spectral information is allocated a fixed number of bits and an adaptive number of bits, except that at least some but not all code words are allocated a fixed number of bits.

US05142656	Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
Assignee	Dolby Laboratories Licensing Corporation
Assign./Filed	Aug. 25, 1992/ Nov. 4, 1991
Inventors	Fielder; Louis D., Davidson; Grant A.
Summary	Fancy adaptive bit allocation method using fixed offsets (seems a lot like the one ATRAC uses). Appears to be large overlap with US05109417.
Abstract	A transform encoder, a transform decoder, and a transform encoder/decoder system employ adaptive bit allocation wherein each code word representing spectral information is allocated a fixed number of bits and an adaptive number of bits, except that at least some but not all code words are allocated a fixed number of bits.