Neural network based method for exponent coding in a transform coder for high quality audio
US7337025B1 · kind B1 · utility
3Cited by
4References
56Claims
0Family size
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Key dates
| Filing date | Feb 12, 1998 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Feb 12, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for assigning an exponent coding strategy in a digital audio transform coder. Different coding strategies having different differential coding limits may be assigned to different set of transform exponents according to the frequency domain characteristics of the audio signal. A neural network processing system is utilised to perform an efficient mapping of each exponent set to an appropriate coding strategy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.