发明名称 |
Detecting double talk in acoustic echo cancellation using zero-crossing rate |
摘要 |
A method for acoustic echo cancellation in a communication device is provided that includes receiving a first near-end audio signal in the communication device, wherein the first near-end audio signal comprises acoustic echo of a far-end audio signal reproduced by the communication device, and performing echo cancellation on the first near-end audio signal to generate a second near-end audio signal with at least some of the acoustic echo removed, wherein the echo cancellation is performed responsive to presence or absence of double-talk (DT), and wherein a zero-crossing rate (ZCR) is used to detect the presence or absence of DT. |
申请公布号 |
US9083783(B2) |
申请公布日期 |
2015.07.14 |
申请号 |
US201314091346 |
申请日期 |
2013.11.27 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
Ikram Muhammad Zubair |
分类号 |
H04M9/08;H04B3/23;H04M3/00 |
主分类号 |
H04M9/08 |
代理机构 |
|
代理人 |
Abyad Mirna;Cimino Frank D. |
主权项 |
1. A method for acoustic echo cancellation in a communication device, the method comprising:
receiving a first near-end audio signal in the communication device, wherein the first near-end audio signal comprises acoustic echo of a far-end audio signal reproduced by the communication device; and performing echo cancellation on the first near-end audio signal to generate a second near-end audio signal with at least some of the acoustic echo removed, wherein the echo cancellation is performed responsive to presence or absence of double-talk (DT), and wherein a single zero-crossing rate (ZCR), computed at the output of the echo canceller, is used to detect the presence or absence of DT. |
地址 |
Dallas TX US |