Sound processing apparatus and hearing aid
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United States of America Patent
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Issued Date -
Feb 5, 2004
app pub date -
Jul 30, 2002
filing date -
Jul 30, 2002
priority date (Note) -
Abandoned
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Abstract
The present invention provides a sound processing apparatus capable of outputting clearly perceivable sound. The sound processing apparatus comprises high frequency range enhancement unit for a sound signal amplified by an amplifier, gain-varying unit for varying the gain of a sound signal whose high frequency component is enhanced on the basis of a control signal presented from amplitude sensing unit, addition unit for adding a sound signal that is output from the gain-varying unit and a sound signal from the amplifier, frequency characteristic adding unit whereby the amplitude of the sound signal that is input from the amplifier is increased with increasing frequency in the specified frequency range, and amplitude sensing unit for sensing the magnitude of the amplitude of the sound signal from frequency characteristic adding unit and generating a voltage signal as a control signal substantially proportional to the amplitude thereof.
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