SOUND COMMUNICATION DEVICE AND ECHO PROCESSOR

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 ampl...

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Bibliographic Details
Main Authors TAKAHASHI, SHINYA, KAJIYAMA,IKUO
Format Patent
LanguageEnglish
French
German
Published 08.08.2007
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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Summary: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.
Bibliography:Application Number: EP20000981723