发明名称 |
AUDIO-PEAK LIMITING IN SLOW AND FAST STAGES |
摘要 |
A method and apparatus for limiting the absolute magnitude of an audio signal. The method may include firstly variable-gain reducing the gain of an audio signal, and then secondly variable-gain reducing the gain of the audio signal faster than the first variable-gain reduction, thereby limiting the absolute magnitude of the audio signal to a threshold. The first variable-gain reduction may include variable-gain reducing the gain of the audio signal in a first stage, and the second variable-gain reduction may include variable-gain reducing the gain of the audio signal in a second stage that reduces the gain faster than the first stage. The second variable-gain reduction may include delaying the audio signal, finding a peak among the delayed audio signal, calculating a fast gain from a found peak, and modifying the delayed audio signal with the calculated fast gain. |
申请公布号 |
WO2008021110(A2) |
申请公布日期 |
2008.02.21 |
申请号 |
WO2007US17588 |
申请日期 |
2007.08.08 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION;SMITHERS, MICHAEL JOHN;CROCKETT, BRETT GRAHAM;MCGRATH, DAVID STANLEY |
发明人 |
SMITHERS, MICHAEL JOHN;CROCKETT, BRETT GRAHAM;MCGRATH, DAVID STANLEY |
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