发明名称 |
SOUND COMMUNICATION DEVICE AND ECHO PROCESSOR |
摘要 |
<p>A voice communication device has a control CPU for outputting a speaker amplification value corresponding to volume on a speaker which is adjusted by a terminal user by using a volume control unit, and an echo processing unit for reducing an echo equivalent to output voice, which is obtained by amplifying a received input signal demodulated and voice-decoded according to the speaker amplification value output from the control CPU and outputting the received input signal from the speaker and is mixed with a transmitting input signal input through a microphone, according to the speaker amplification value. Therefore, the echo can be properly removed. <IMAGE></p> |
申请公布号 |
EP1164712(A1) |
申请公布日期 |
2001.12.19 |
申请号 |
EP20000981723 |
申请日期 |
2000.12.14 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
TAKAHASHI, SHINYA;KAJIYAMA,IKUO |
分类号 |
H04M9/08;(IPC1-7):H04B3/23;H04M1/60 |
主分类号 |
H04M9/08 |
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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