Photophone echo noise suppression system and method

The invention discloses a photophone echo noise suppression system and method. The output end of a control processor communicates with a laser light source and an optical isolator in turn. The optical isolator is connected with the "T" end of a Y coupler. The "R" end of the Y cou...

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Bibliographic Details
Main Authors SUN CHAO, XU RUI, HAN SHUNLI, YAN JISONG, DAI BIN, LIU XIANLONG, YIN BINGQI
Format Patent
LanguageChinese
English
Published 16.03.2016
Subjects
ACOUSTICS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
TELEPHONIC COMMUNICATION
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Summary:The invention discloses a photophone echo noise suppression system and method. The output end of a control processor communicates with a laser light source and an optical isolator in turn. The optical isolator is connected with the "T" end of a Y coupler. The "R" end of the Y coupler communicates with a power receiving end and an analog switch in turn. The analog switch is connected with the input end of the control processor. Compared with systems and methods in the prior art, echo noise and interference of useless incident light can be effectively suppressed, the phenomenon of self-transmitting and self-receiving can be solved, and quality of voice communication can be enhanced.
Bibliography:Application Number: CN201510744498