Method of detecting speech and speech detector for low signal-to-noise ratios
US12131749B2 · kind B2 · utility
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2References
28Claims
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Key dates
| Filing date | May 31, 2022 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | Jan 7, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2025/937
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates in a first aspect to a method of detecting speech of incoming sound at a portable communication device. A microphone signal is divided into a plurality of separate frequency band signals from which respective power envelope signals are derived. Onsets of voiced speech of a first frequency band signal are determined based on a first stationary noise power signal and a first clean power signal and onsets of unvoiced speech in a second frequency band signal are determined based on a second stationary noise power signal and second clean power signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.