发明名称 |
APPARATUS AND METHOD FOR TRANSMITTING SOUND THROUGH NONLINEAR MEDIA |
摘要 |
Provided are an apparatus and method for transmitting sound through a nonlinear medium. The apparatus includes a pre-distorter for previously distorting a sound signal to compensate for distortion to be caused by a frequency characteristic of the nonlinear medium in a transmission process of the sound signal, a sigma-delta modulator for modulating the pre-distorted sound signal into a signal having two signal levels, a high-frequency modulator for multiplying the modulated signal by a carrier wave having a higher frequency than an audio frequency band to shift the modulated signal to a carrier frequency band and generate a high-frequency modulated signal, and a transmitter for converting the high-frequency modulated signal into a sound wave signal suited to be transmitted through the nonlinear medium and transmitting the sound wave signal.
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申请公布号 |
US2011200208(A1) |
申请公布日期 |
2011.08.18 |
申请号 |
US20080808707 |
申请日期 |
2008.09.25 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
SHIM JAE HOON;KANG SUNG WEON;KIM SUNG EUN;HWANG JUNG HWAN;HYOUNG CHANG HEE;KIM JIN KYUNG;LIM IN GI;PARK HYUNG IL;KIM KYUNG SOO;KIM JUNG BUM;KANG TAE WOOK;PARK KI HYUK |
分类号 |
H04B15/00 |
主分类号 |
H04B15/00 |
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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