SOUND PICKUP DEVICE AND SOUND PICKUP METHOD

A sound pickup device (1) comprises a directional first microphone (10A), a non-directional second microphone (10B) and a level control portion (15) that obtains a correlation between a first sound pickup signal to be generated from the first microphone (10A) and a second sound pickup signal to be g...

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Bibliographische Detailangaben
Hauptverfasser:	UKAI, Satoshi, MURAMATSU, Mikio, KAWAI, Tetsuto, INOUE, Takayuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION
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Beschreibung
Zusammenfassung:	A sound pickup device (1) comprises a directional first microphone (10A), a non-directional second microphone (10B) and a level control portion (15) that obtains a correlation between a first sound pickup signal to be generated from the first microphone (10A) and a second sound pickup signal to be generated from the second microphone (10B), and performs level control of the first sound pickup signal or the second sound pickup signal according to a calculation result of the correlation. Therein the correlation includes coherence. The level control portion (15) performs the level control based on a ratio of a frequency component of which the coherence exceeds a predetermined threshold value.