Piezoelectric Speaker Driver
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Jul 28, 2016
app pub date -
Jan 22, 2016
filing date -
Jan 23, 2015
priority date (Note) -
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Abstract
A speaker apparatus includes a speaker assembly and a piezoelectric driver. The speaker assembly including a diaphragm and a motor. Application of a first electric current to the motor causes a first movement of a portion of the motor. The first movement causes the diaphragm to move and responsively creates sound energy in a first and non-ultrasonic frequency range. The piezoelectric driver is disposed in proximal relation to the speaker assembly. Application of a second electric current to the piezoelectric driver causes actuation of the piezoelectric driver. The actuation is effective to produce an impact of a portion of the piezoelectric driver with the speaker assembly and causes a second movement of the diaphragm within the speaker assembly. The second movement responsively creates sound energy in a second and ultrasonic frequency range.
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