Dynamic bit allocation subband excited transform coding method and apparatus
US5235671A · kind A · utility
57Cited by
10References
18Claims
0Family size
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Key dates
| Filing date | Oct 15, 1990 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Oct 15, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/0204
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an adaptive subband excited transform speech encoding system, a range of quantizers are available and are dynamically selected for each window of speech. The quantizers designated for individual subbands are determined to minimize mean squared error distortion in the recreated signal while using no more than a predetermined number of quantization bits per window of speech.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.