TRANSMITTER-RECEIVER SYSTEM

PROBLEM TO BE SOLVED: To provide a transmitter-receiver system capable of achieving clear speech communication or voice recording by using a microphone and an earphone without being affected by external noise. SOLUTION: In the transmitter-receiver system 10 having the microphone 11 inserted into one...

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Bibliographische Detailangaben
Hauptverfasser:	MIYAWAKI EIJI, TSUKADA KEN
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a transmitter-receiver system capable of achieving clear speech communication or voice recording by using a microphone and an earphone without being affected by external noise. SOLUTION: In the transmitter-receiver system 10 having the microphone 11 inserted into one ear, the earphone 12 inserted into the other ear, a first amplifier 13 for outputting a voice output electric signal to the earphone 12, and a second amplifier 14 for amplifying the voice input electric signal from the microphone 12 up to a prescribed output, a highpass filter 31 for relatively reducing a low-pitched range with respect to a high-pitched range of the voice input electric signal from the microphone 11 to make the voice input electric signal similar to a natural voice is provided in an output circuit of the microphone 11 or in the second amplifier 14, and the microphone 11 has a voice transducer 26 that directly acquires voice transmitting in an external auditory meatus by air propagation. COPYRIGHT: (C)2007,JPO&INPIT