System, method, and apparatus for fast quantization in perceptual audio coders
US7650277B2 · kind B2 · utility
4Cited by
16References
22Claims
0Family size
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Key dates
| Filing date | Sep 25, 2003 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Aug 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/0204
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique to encode an audio signal based on a perceptual model. In one example embodiment, this is accomplished by shaping quantization noise in the spectral lines on a band-by-band basis using their local gains. The noise shaped spectral lines are then fitted within a predetermined bit rate to form an encoded bit stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.