Device and method for supplying a reference audio signal to an acoustic processing unit
US9412378B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2013 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Aug 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02082
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Equipment includes a first interface intended to be connected to a sound reproduction device and at least one second interface intended to be connected to at least one microphone, an acoustic processing unit adapted for delivering an audio signal filtered by attenuation or suppression of a reference audio signal from an audio signal received via the second interface. In an initialisation phase, the equipment determines a propagation latency; configures a buffer with a reading-triggering threshold defined according to the determined propagation latency. In a nominal operating phase, the equipment transmits a third audio signal via the first interface, the third audio signal being the reference signal after passing through the buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.