Method and apparatus for pre-processing speech to maintain speech intelligibility
US9875754B2 · kind B2 · utility
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3References
23Claims
0Family size
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Key dates
| Filing date | May 8, 2014 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Jun 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio system processes a speech signal to maintain a target value of the speech intelligibility index (SII) while minimizing the overall speech level so that speech intelligibility is preserved across different environmental sound levels while possible distortions and overall loudness are mitigated. In one embodiment, a hearing aid processes a speech signal received from another device to maintain a target value of the SII while minimizing the overall speech level before mixing the speech signal with a microphone signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.