Sound reproducing apparatus
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United States of America Patent
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May 10, 2011
Grant Date -
Nov 16, 2006
app pub date -
May 11, 2006
filing date -
May 11, 2005
priority date (Note) -
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Abstract
A sound reproducing apparatus which can be relatively inexpensive as a whole and also be simple in construction with reduced wiring even in the case where many speakers are used. Pulse-width modulated (PWM) pulses are generated based on respective audio signals for multiple-channel speakers. PWM pulses are time-division multiplexed and amplified, and then output as digital driving signals. The multiple-channel speakers are selectively turned on/off such that the digital driving signals are supplied to the respective multiple-channel speakers of corresponding channels.
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