发明名称 |
METHOD AND SYSTEM FOR SUPPRESSING RECEIVER AUDIO REGENERATION |
摘要 |
The invention concerns a method (500) and system (100) for suppressing receiver audio regeneration. The method (500) includes the steps of receiving a communication signal (502), at a Radio Frequency (RF) unit (102), demodulating the communication signal to an audio signal (504), monitoring a volume level of the audio signal (506), and shifting the pitch of the audio signal when the volume level reaches a predetermined threshold (508), and playing the pitch-shifted audio signal out of a speaker to produce a pitch- shifted acoustic signal (510). The method can shift the pitch of the audio signal to produce a pitch-shifted acoustic signal with signal properties suppressing regeneration of the acoustic signal onto the audio signal at the RF unit. The amount of pitch-shifting can be a function of the volume level.
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申请公布号 |
CA2623704(A1) |
申请公布日期 |
2007.04.12 |
申请号 |
CA20062623704 |
申请日期 |
2006.09.02 |
申请人 |
MOTOROLA, INC. |
发明人 |
MCINTOSH, JASON D.;PAVLOV, PETER M.;JOHNSON, GRAEME P. |
分类号 |
G10L11/04;G10L11/00;G10L19/14;G10L21/00;H04B1/18;H04B15/00 |
主分类号 |
G10L11/04 |
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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