Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
US5142656A · kind A · utility
112Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1991 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Nov 4, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/665
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.