Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Housed microphone
Patent
1997-10-27
1999-01-19
Kuntz, Curtis A.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Housed microphone
381 92, 381122, 381338, 381357, H04R 2500, H04R 300
Patent
active
058622403
ABSTRACT:
A microphone device is of a structure comprising at least three microphone elements disposed in the state spaced by predetermined distances in a direction perpendicular to the main axis of directivity, and an adder for adding output signals from the respective microphone elements. In this case, the microphone elements are respectively comprised of uni-directional microphone elements, and are disposed in the state where the sound collection surfaces are directed in the same direction with respect to the sound source and at substantially equal intervals. This microphone device realizes sharp directivity in the middle pitched tone (sound) region (range) required for the input means of the speech recognition equipment, and realizes sound collection which has high sensitivity with respect to speech (voice) input from the front and has extremely less noise components inputted from the side surfaces (lateral direction).
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Ohkubo Masashi
Sasaki Toru
Kuntz Curtis A.
Maioli Jay H.
Mei Xu
Sony Corporation
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