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Input sound processor
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Patent number 7,542,577
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Issue date Jun 2, 2009
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Alpine Electronics, Inc.
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Shingo Kiuchi
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Microphone system
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Patent number 7,146,013
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Issue date Dec 5, 2006
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Alpine Electronics, Inc.
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Nozomu Saito
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Voice input apparatus
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Patent number 6,847,723
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Issue date Jan 25, 2005
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Alpine Electronics, Inc.
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Shingo Kiuchi
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G10 - MUSICAL INSTRUMENTS ACOUSTICS