Vehicle approach alert device
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United States of America Patent
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Jul 4, 2017
Grant Date -
Mar 24, 2016
app pub date -
May 16, 2013
filing date -
May 16, 2013
priority date (Note) -
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Abstract
A vehicle approach alert device includes: a first output sound voltage waveform signal generator having a first output sound generator that generates a first signal corresponding to output sound data read out from a memory device, and a first sound volume variable device that controls a voltage level of the first signal; a second output sound voltage waveform signal generator having a second output sound generator that generates a second signal corresponding to the output sound data read out from the memory device, and a second sound volume variable device that controls a voltage level of the second signal; a mixer circuit that mixes the first signal and the second signal; and an amplifier that outputs a vehicle approach alert sound with flowing current, which corresponds to a voltage of a mixed signal, through a sound output body.
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