METHOD AND DEVICE FOR DETECTING SUPERIMPOSED VOICE AND VOICE INPUT AND OUTPUT DEVICE USING THE DETECTOR

PURPOSE:To detect the superimposition of a voice outputted from the voice input/output device and a voice inputted by the user of the voice input/output device with high precision. CONSTITUTION:The superimposed voice in the voice input/output device colculates a power of an output voice signal outpu...

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Hauptverfasser:	NISHI HIROYUKI, KITAI MIKIO
Format:	Patent
Sprache:	eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS TRANSMISSION
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Beschreibung
Zusammenfassung:	PURPOSE:To detect the superimposition of a voice outputted from the voice input/output device and a voice inputted by the user of the voice input/output device with high precision. CONSTITUTION:The superimposed voice in the voice input/output device colculates a power of an output voice signal outputted from a voice output section 30 and a power of an input voice signal received by a voice input section 40 to calculate a difference of the power of the output voice signal and the input voice signal. Whether or not an echo of the output voice signal is superimposed on the input voice signal is detected by a detection means 20 depending on the difference of the power between the output voice signal and the input voice signal.