Apparatus and method for modifying an audio signal using envelope shaping
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United States of America Patent
Stats
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Feb 16, 2016
Grant Date -
Aug 22, 2013
app pub date -
Aug 17, 2012
filing date -
Feb 26, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for modifying an audio signal has an envelope shape determiner, a filterbank processor, a signal processor, a combiner and an envelope shaper. The envelope shape determiner determines envelope shape coefficients based on the a frequency domain audio signal representing a time domain input audio signal and the filterbank processor generates a plurality of bandpass signals in a subband domain based on the frequency domain audio signal. Further the signal processor modifies a subband domain bandpass signal of the plurality of subband domain bandpass signals based on a predefined modification target. The combiner combines at least a subset of the plurality of subband domain bandpass signals containing the modified subband domain bandpass signal to obtain a time domain audio signal. Further, the envelope shaper is operative to obtain a shaped audio signal.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- G10H Class
- 220 Applications Filed
- 193 Patents Issued To-Date
- 87.73 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- G10H Class
- 4.55 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 16, 2027 |
