Digital speaker driving apparatus
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United States of America Patent
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Jun 27, 2017
Grant Date -
Feb 11, 2016
app pub date -
Oct 21, 2015
filing date -
Jun 16, 2008
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Abstract
A digital sound system suitable for a digital speaker device to directly convert analog sound by a circuit using a ΔΣ modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital signals. A digital speaker driving device includes a ΔΣ modulator, a post filter, s driving circuits, and a power supply circuit to supply power to the ΔΣ modulator, the post filter and the s driving elements, and the s driving circuits are adapted to s digital signal terminals.
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