Dynamic Range isthe difference between the loudest signal and the lowest (usually background noise.)
| Compressors reduce the dynamic range of a passage. Then a overall gain bring the signals to a louder level keeping the dynamic range lower.. |
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Original Signal with a sudden louder region |
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Compressor applied with short attack and release |
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Compressor applied with long attack and release |
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Compressor applied with high ratio, short attack and release, and no gain. |
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Compressor applied with high ratio, short attack and release, and gain. |
| Expanders increase the dynamic range. | ![]() |
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Original signal with a sudden drop in intensity |
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Expanded signal with clear attack and release times |
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Extreme case of expander - Gate The signal is droped to a minimun |