System for adjusting loudness of audio signals in real time
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United States of America Patent
Stats
-
Jan 31, 2017
Grant Date -
Oct 17, 2013
app pub date -
Apr 20, 2012
filing date -
Apr 12, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of adjusting a loudness of an audio signal in real time may include receiving an electronic audio signal and dividing the audio signal into a plurality of frames. Processing of the frames may be performed in real time. The processing may include measuring initial loudness values for blocks of samples in a frame to produce a plurality of initial loudness values, and computing a weighted average of at least some of the initial loudness values. The weights may be selected based on one or more of the recency of the initial loudness values, variation of the initial loudness values, and estimated information content of the audio signal. The processing may further include selectively discarding at least some of the loudness values that reach an adaptive loudness threshold. Weights can be adjusted based on the variation of the loudness values of the audio signal.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- H04S Class
- 132 Applications Filed
- 124 Patents Issued To-Date
- 93.94 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- H04S Class
- 0 % this patent is cited more than
- 8 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 | Jul 31, 2028 |
