Echo cancellation method in wireless headset communication system
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United States of America Patent
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Issued Date -
Sep 13, 2007
app pub date -
Mar 13, 2006
filing date -
Mar 13, 2006
priority date (Note) -
Abandoned
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Abstract
An echo cancellation method in a wireless headset communication system includes the steps: (1) providing at least one delayer and at least one amplifier for respectively performing a specific phase modulation and a specific amplitude adjustment on at least one branch signal of a receiving signal received from a far-end user, thereby generating at least one pseudo echo signal having identical phase and amplitude with those of at least one actual echo signal; (2) performing at least one signal-mixture process on the pseudo echo signal and a sending signal in which the actual echo signal is contained to subtract the pseudo echo signal from the sending signal, thereby counteracting the actual echo signal. The present invention can provide a better echo cancellation effect, and simultaneously has an advantage in the easiness for bring into practice and low practice cost.
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