| 摘要 |
Audio level control is provided for compressed audio. Scale factors for the compressed audio are extracted from an MPEG audio data stream, the extracted scale factors are altered without decompressing the compressed audio, and the MPEG audio data stream is updated with the altered scale factors. All of the scale factors in the MPEG audio data stream are altered based on a parameter identifying how the gain levels in the MPEG data stream are to be altered.
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