发明名称 |
LOOP GAIN ESTIMATING APPARATUS AND HOWLING PREVENTING APPARATUS |
摘要 |
A pseudo noise superimposing unit superimposes a pseudo noise (M-sequence) to an audio signal picked up by a microphone and outputs the superimposed signal to an amplifying system. An calculating unit calculates a correlation value between the audio signal picked up by the microphone and the pseudo noise. The calculating unit estimates a gain of a closed loop based on the correlation value. A gain control unit suppresses a gain of the audio signal based on the estimated gain of the closed loop. |
申请公布号 |
US2011182439(A1) |
申请公布日期 |
2011.07.28 |
申请号 |
US200913120885 |
申请日期 |
2009.09.24 |
申请人 |
YAMAHA CORPORATION |
发明人 |
SAKURADA SHINYA;SONE TAKURO;KAKIZAKI TAKAYA;SASAKI SACHIYA;SAITO KOSUKE |
分类号 |
H04B15/00 |
主分类号 |
H04B15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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