Signal processor
US10356515B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2018 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | May 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal processor comprising a plurality of microphone-terminals configured to receive a respective plurality of microphone-signals. A plurality of beamforming-modules, each respective beamforming-module configured to receive and process input-signalling representative of some or all of the plurality of microphone-signals to provide a respective speech-reference-signal, a respective noise-reference-signal, and a beamformer output signal based on focusing a beam into a respective angular direction. A beam-selection-module comprising a plurality of speech-leakage-estimation-modules, each respective speech-leakage-estimation-module configured to receive the speech-reference-signal and the noise-reference-signal from a respective one of the plurality of beamforming-modules; and provide a respective speech-leakage-estimation-signal based on a similarity measure of the received speech-reference-signal with respect to the received noise-reference-signal. The beam-selection-module further comprises a beam-selection-controller configured to provide a control-signal based on the speech-leakage-estimation-signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.