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Sound field controller
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Patent number 5,572,591
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Issue date Nov 5, 1996
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Matsushita Electric Industrial Co., Ltd.
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Hiroko Numazu
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Sound field controller
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Patent number 5,381,482
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Issue date Jan 10, 1995
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Matsushita Electric Industrial Co., Ltd.
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Masaharu Matsumoto
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Music tone pitch shift apparatus
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Patent number 5,131,042
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Issue date Jul 14, 1992
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Matsushita Electric Industrial Co., Ltd.
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Mikio Oda
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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