发明名称 |
SUPPRESSION OF ACOUSTIC FEEDBACK IN VOICE COMMUNICATIONS |
摘要 |
Suppressing one or more frequency ranges of a signal prevents the occurrence of feedback in a voice data communications application. A system recognizes a frequency range in a signal where feedback occurs, or anticipates a frequency range where feedback is anticipated. The signal includes a signal the input system generates or that the output system renders. The system suppresses the signal in the frequency range by disregarding one or more sampling bits representing the frequency range, or by applying one or more filters to attenuate or eliminate the signal in the frequency range. The system may monitor the signal to identify feedback resulting in different or additional frequency ranges and suppress the signal in the different or additional frequency ranges to prevent feedback from occurring.
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申请公布号 |
WO2007078557(A2) |
申请公布日期 |
2007.07.12 |
申请号 |
WO2006US46690 |
申请日期 |
2006.12.06 |
申请人 |
MICROSOFT CORPORATION |
发明人 |
ZHONG, WEI;HE, CHAO;KRANTZ, ANTON W.;LI, QIN |
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