DETECTING AND QUANTIFYING NON-LINEAR CHARACTERISTICS OF AUDIO SIGNALS
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United States of America Patent
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Issued Date -
Jan 1, 2015
app pub date -
Jul 31, 2013
filing date -
Jun 28, 2013
priority date (Note) -
Abandoned
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Abstract
Methods, systems, and apparatuses are provided for detecting, quantifying, and compensating for non-linear characteristics of audio signals. External audio devices are detected when coupled to electronic or communication devices. Tuning operations are initiated upon detection of external audio devices to estimate non-linear parameters imparted to audio signals by the external audio devices. The non-linear components of audio signals are compensated for based upon the estimations. Compensation is performed using pre-processing filters, distortion circuits, post-processing filters. Estimation and compensation for non-linearities is performed on the basis of models dynamically generated during estimation and the use of higher-order statistics.
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