Mitigating acoustic feedback in hearing aids with frequency warping by all-pass networks
US11849283B2 · kind B2 · utility
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2References
21Claims
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Key dates
| Filing date | Sep 16, 2020 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Sep 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system or device such as a hearing aid are provided for processing audio signals. In accordance with the method, an audio signal is received and divided into a plurality of frequency sub-bands. For each of the frequency sub-band signals, the signal is further divided into overlapping temporal frames. Each of the temporal frames are windowed. Frequency warping is performed on each of the windowed frames. Overlap-and-add is performed on the frequency warped frames. The frequency warped sub-bands are combined into a full band to provide a frequency warped signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.