Title:
ECHO DELAY DETECTION METHOD, ECHO CANCELLATION CHIP AND TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/162115
Kind Code:
A1
Abstract:
Provided are an echo delay detection method, an echo cancellation chip and a terminal device. The method comprises: when a call access request is detected, acquiring an audio signal collected by an audio input device of a terminal device and propagating through the air, the audio signal corresponding to an audio output by an audio output device of a terminal device; transforming the audio signal to obtain a signal to be processed; determining a reference signal corresponding to the audio signal; and determining an echo delay value according to the reference signal and the signal to be processed.
Inventors:
LIANG JUNBIN (CN)
Application Number:
PCT/CN2017/077266
Publication Date:
September 28, 2017
Filing Date:
March 20, 2017
Export Citation:
Assignee:
TENCENT TECH SHENZHEN CO LTD (CN)
International Classes:
H04M9/10
Foreign References:
| CN105847611A | 2016-08-10 | |||
| CN102625006A | 2012-08-01 | |||
| CN101026659A | 2007-08-29 | |||
| CN101321201A | 2008-12-10 | |||
| US6766021B2 | 2004-07-20 |
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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