Reduced complexity transform for a low-frequency-effects channel
US10410644B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Mar 19, 2012 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Sep 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The computational resources that are needed to apply a transform-based filterbank to a limited-bandwidth audio signals are reduced by performing an integrated process of combining real-valued input data into complex-valued data and applying a short transform to the complex-valued data, applying a bank of very short transforms to the output of the integrated process, and deriving a sequence of real-valued output data from the outputs of the bank of very short transforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.