Signal processing apparatus and signal processing method
US11270718B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2018 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Sep 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02163
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
It is desirable to provide an echo cancellation technique that enables an environmental change to be flexibly addressed. Provided is a signal processing apparatus including: an echo cancellation unit that learns an estimated transfer characteristic in a space through which a signal reproduced by a speaker is input to a microphone, and performs echo cancellation on the basis of the estimated transfer characteristic learned; and an environmental change detection unit that detects an environmental change, in which the echo cancellation unit learns the estimated transfer characteristic by causing the speaker to reproduce a sound for learning on the basis of detection of the environmental change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.