MDCP: Patent Abstact US05109417: Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio

US05109417 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio

Assignee Dolby Laboratories Licensing Corporation

Assign./Filed April 28, 1992/ Dec. 29, 1989

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

Summary Use of block floating representation and adaptive bit allocation for encoding high quality audio. Gives nicely detailed, general coverage of transform coding.

Abstract Quantizing noise is lessened in a speech signal system by using adaptive bit allocation for subband channels, wherein subband information of digital words is represented in block-floating-point form, and normalized mantiss as may allow dropping a sign bit.

US05109417	Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
Assignee	Dolby Laboratories Licensing Corporation
Assign./Filed	April 28, 1992/ Dec. 29, 1989
Inventors	Fielder; Louis D., Davidson; Grant A.
Summary	Use of block floating representation and adaptive bit allocation for encoding high quality audio. Gives nicely detailed, general coverage of transform coding.
Abstract	Quantizing noise is lessened in a speech signal system by using adaptive bit allocation for subband channels, wherein subband information of digital words is represented in block-floating-point form, and normalized mantiss as may allow dropping a sign bit.