发明名称 |
Single transducer full duplex talking circuit |
摘要 |
A full duplex talking audio circuit uses a single transducer ZT which, even when various characteristics including the strength of a transmission signal change from moment to moment, enables the adequate operation of an echo canceling function and sufficiently compensates for the deterioration of the frequency characteristics of the transmission signal due to the acoustic transfer characteristics of the human body. |
申请公布号 |
US8315379(B2) |
申请公布日期 |
2012.11.20 |
申请号 |
US20080054320 |
申请日期 |
2008.03.24 |
申请人 |
MASUDA MASAHISA;KITAZUMI GONTARO;MATECH, INC. |
发明人 |
MASUDA MASAHISA;KITAZUMI GONTARO |
分类号 |
H04M9/08 |
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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