Switched filterbank for use in audio signal coding
US5852806A · kind A · utility
52Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Oct 1, 1996 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | Oct 1, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/025
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An audio coding technique which utilizes a signal adaptive switched filterbank having a first filterbank and a wavelet filterbank. The filterbank switches between the first filterbank and the wavelet filterbank to filter an input signal as a function of the stationarity of the input signal. The first filterbank is utilized to filter stationary signal components. The wavelet filterbank is utilized to filter non-stationary signal components (e.g., attacks).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.