Electrical audio signal processing systems and devices – Including amplitude or volume control – Automatic
Reexamination Certificate
2002-01-09
2010-12-07
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Including amplitude or volume control
Automatic
C700S094000
Reexamination Certificate
active
07848531
ABSTRACT:
The overall loudness of an audio track is calculated by combining a number of weighted loudness measures for segments of the audio track, where the weight applied to each individual loudness measure is a function of the loudness measure. By comparing the original overall loudness measure to a desired overall loudness measure, a gain can be determined that will adjust the loudness level to the desired value. Also disclosed is a dynamic compression method that analyzes the dynamic characteristics of an audio track and determines appropriate compressor parameters. Additionally, the loudness of a post-compressor audio track can be estimated for any given compressor parameters, thus permitting post-compression loudness matching to be done even if the compression is performed in real-time.
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Jot Jean-Marc
Vickers Earl
Chin Vivian
Creative Technology Ltd.
Lao Lun-See
Schwegman Lundberg & Woessner, P.A.
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