Method and System for Virtual Bass Enhancement
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United States of America Patent
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Issued Date -
Sep 16, 2010
app pub date -
Oct 23, 2009
filing date -
Mar 13, 2009
priority date (Note) -
Abandoned
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Abstract
Techniques for enhancing bass effects in an audio signal are described. According to one embodiment, an audio input signal is filtered to produce a low frequency component thereof (a low frequency signal of the audio input signal). The low frequency signal expressed in time domain is transformed to a corresponding spectrum expression in frequency domain. A fundamental frequency signal of the low frequency signal in the frequency domain is determined to generate a plurality of harmonics that are then transformed back to the time domain. Both the audio input signal (delayed) and the harmonics are synthesized to produce an audio output signal whose bass is greatly enhanced.
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