Speaker device, sound reproducing method, and speaker control device
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United States of America Patent
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May 17, 2011
Grant Date -
Sep 27, 2007
app pub date -
Mar 2, 2007
filing date -
Mar 3, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A speaker device mixes an audible frequency band signal wave with a modulated wave obtained by modulating an ultrasonic frequency band carrier wave with an audible frequency band signal so as to generate a synthesis wave, and drives an ultrasonic transducer with the synthesis wave so as to reproduce a signal sound.
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Family
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Cited Art Landscape
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