发明名称 TWO-WAY VOICE COMMUNICATION EQUIPMENT AND NETWORK
摘要 PROBLEM TO BE SOLVED: To provide two-way voice communication equipment for alternatively suppressing an echo to output a voice for communication equipment in which an echo is generated when a voice is outputted as it is. SOLUTION: This voice corresponding type network camera 1 is provided with a microphone 17, a speaker 18 and an echo canceler 16, and configured to execute voice communication in two-way through a network 3, and to decode the received voice digital data by a voice reception processing part 14, and to input a voice analog signal after DA conversion to the echo canceler 16. A DA converting part 45 and a switch part 42 are arranged between a voice reception processing part 14 and the echo canceler 16, and a voice input terminal 41 for inputting an external voice signal is connected to the switch part 42, and the external voice signal is inputted to the echo canceler 16 according as the switch part 42 is switched. COPYRIGHT: (C)2005,JPO&NCIPI
申请公布号 JP2005175759(A) 申请公布日期 2005.06.30
申请号 JP20030411479 申请日期 2003.12.10
申请人 MATSUSHITA ELECTRIC IND CO LTD 发明人 YOSHIGAI TADASHI;KIHARA TOSHIYUKI
分类号 H04R3/02;H04B3/23;H04M1/60;(IPC1-7):H04B3/23 主分类号 H04R3/02
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