发明名称 |
METHOD AND SYSTEM FOR DYNAMIC RANGE CONTROL IN AN AUDIO PROCESSING SYSTEM |
摘要 |
Methods and systems for dynamic range control in an audio processing system are disclosed and may include controlling a dynamic range of an audio signal by expanding the dynamic range utilizing a dynamic expander, and dividing the audio signal into a plurality of frequency bands. Each of the bands may be individually compressed utilizing a multi-band compressor. A sum of the individually compressed frequency bands may be compressed utilizing a full-band compressor. The audio signal may be filtered utilizing a pre-emphasis filter, such as an infinite impulse response filter and may be divided into frequency bands utilizing one or more finite impulse response filters and/or delay modules. The dynamic expander may include adaptive thresholds and an envelope detector. Each of the frequency bands may be compressed utilizing syllabic compression in the multi-band compressor. The compressed sum of compressed plurality of bands may be processed utilizing an audio CODEC.
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申请公布号 |
US2010204996(A1) |
申请公布日期 |
2010.08.12 |
申请号 |
US20090367854 |
申请日期 |
2009.02.09 |
申请人 |
ZENG HANKS;KHANDURI PRAKASH;KASISKE KEN;PATEL RONISH;SOLLENBERGER NELSON |
发明人 |
ZENG HANKS;KHANDURI PRAKASH;KASISKE KEN;PATEL RONISH;SOLLENBERGER NELSON |
分类号 |
G10L21/00 |
主分类号 |
G10L21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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