Method and apparatus for audio processing
US9674368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2014 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Mar 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/002
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An audio apparatus including a circuit for applying a dynamic range adjustment processing to an input signal to generate an output signal for rendering by a loudspeaker. The dynamic range adjustment processing is dependent on a set of dynamic range adjustment parameters. A first linear echo-cancellation filter generates a first compensated signal from the input signal and a first adapter determines a set of filter parameters for the first linear echo-cancellation filter in response to the first compensated signal and a microphone signal. An audio circuit generates a second compensated signal by applying the dynamic range adjustment processing and a second echo-cancellation filter to the input signal where the second echo-cancellation filter corresponding to the first echo-cancellation filter. A second adapter determines the set of dynamic range adjustment parameters in response to the second compensated signal and the microphone signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.