Method and apparatus for detecting echo delay and electronic device
US11330383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2020 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Sep 29, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/165
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus detect an echo delay. If an electronic device plays an audio and a counter is in an on state, an Nth recording data block received after the counter is turned on is acquired, where the Nth recording data block is a currently received recording data block, and N is greater than 1. Matching is performed between the Nth recording data block and a reference data block that is in a buffer, where the recording data block and the reference data block are data blocks with target duration. After the counter is on, the buffer buffers an audio data block played by the electronic device. If the Nth recording data block matches the reference data block in the buffer, a counting value is acquired. The counter performs counting if the recording data block does not match the reference data block. An echo delay is determined based on the target duration and the counting value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.