基本信息:
- 专利标题： SYSTEMS AND METHODS FOR DETECTING WIND NOISE USING MULTIPLE AUDIO SOURCES
- 专利标题（中）：用多个音频源检测风噪声的系统和方法
- 申请号：PCT/US2009037485 申请日：2009-03-18
- 公开(公告)号：WO2009117474A2 公开(公告)日：2009-09-24
- 发明人： RAMAKRISHNAN DINESH , WANG SONG
- 申请人： QUALCOMM INC , RAMAKRISHNAN DINESH , WANG SONG
- 专利权人： QUALCOMM INC,RAMAKRISHNAN DINESH,WANG SONG
- 当前专利权人： QUALCOMM INC,RAMAKRISHNAN DINESH,WANG SONG
- 优先权： US3745308 2008-03-18
- 主分类号： H04R3/00
- IPC分类号： H04R3/00 ; H04R25/00
摘要：
A method for detecting wind noise is described. At least two audio signals are received. The at least two audio signals are filtered to reduce higher frequencies and to reduce lower frequencies to provide at least two filtered audio signals. The cross correlation of the at least two filtered audio signals is computed for multiple delays. A maximum cross correlation is determined from the cross correlations computed for the multiple delays. Wind noise is detected by comparing the maximum cross correlation with a threshold.
摘要（中）：
描述了用于检测风噪声的方法。 至少接收到两个音频信号。 对至少两个音频信号进行滤波以降低较高频率并降低较低频率以提供至少两个滤波的音频信号。 针对多个延迟计算至少两个滤波的音频信号的互相关。 根据为多个延迟计算的互相关确定最大互相关。 通过比较最大互相关与阈值来检测风噪声。