Capturing and processing sound signals for voice recognition and noise/echo cancelling
US11032630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Oct 19, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/226
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system comprising a microphone arranged to capture sound from an environment, and an ultrasound emitter configured to emit an emitted ultrasound signal into an environment. The microphone is arranged to capture a received audio signal from the environment, comprising a component in the human audible range. The microphone is also arranged to capture a received ultrasound signal comprising reflections of the emitted ultrasound signal, or else the system comprises another, co-located microphone arranged to capture the received ultrasound signal. Either way, the system further comprises a controller implemented in software or hardware or a combination thereof, wherein the controller is configured to process the received audio signal in dependence on the received ultrasound signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.