Electronic device and decoding method of audio data thereof
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United States of America Patent
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May 27, 2014
Grant Date -
Oct 25, 2012
app pub date -
Jun 19, 2011
filing date -
Apr 19, 2011
priority date (Note) -
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Abstract
A decoding method of audio data is applied to an electronic device. The method includes: calculating difference values of the left and right channel audio signal values; determining time slots, wherein each of the first difference values exceeds a threshold value and a time length of the time slots exceeds a preset time; respectively multiplying the time slots with the left channel audio signal values and the right channel audio signal values to obtains and then making subtraction to obtain DM1˜n; finding a U shaped pattern or an inverse U shaped pattern which meets proportionality from the waveform of DM1˜n; and decoding the written symbol “0” or “1” according to the found U shaped pattern or inverse U shaped pattern.
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