发明名称 Voice communications apparatus
摘要 Voice communications apparatus intervenes between a telephone set and a broad-band transmission path that has a communication band broader than a voice band limited by the transmitter and receiver characteristics of the telephone set. The voice communications apparatus includes a transmitter frequency characteristic corrector circuit for correcting the frequency characteristic of a signal input from the telephone set, and a receiver frequency characteristic corrector circuit for correcting the frequency characteristic of a signal to be input to the telephone set.
申请公布号 US7792255(B2) 申请公布日期 2010.09.07
申请号 US20050165436 申请日期 2005.06.24
申请人 OKI ELECTRIC INDUSTRY CO., LTD. 发明人 TAKADA MASASHI;AOYAGI HIROMI;AKIE KAZUYOSHI
分类号 H04M1/00;H04M11/00;H04B3/04;H04M1/253;H04M1/60;H04M3/40;H04M7/00 主分类号 H04M1/00
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