METHOD FOR DYNAMICALLY ADJUSTING THE SPECTRAL CONTENT OF AN AUDIO SIGNAL
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United States of America Patent
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Issued Date -
Oct 20, 2011
app pub date -
Mar 31, 2011
filing date -
Apr 22, 2006
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Abstract
Circuit and associated methods for dynamically adjusting the spectral content of an audio signal, which increases the harmonic content through the systematic introduction of amplitude asymmetry. In one embodiment, the method comprises a spectral modification of an analog audio signal in which the high-frequency content is reduced as a function of the signal amplitude and spectral distribution. The audio signal is subjected to a complementary pre-emphasis and de-emphasis of the high frequencies.
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