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What is an Expander?

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asked Apr 15, 2015 in Audio Terms by AlexTinsley (912,210 points)
What is an Expander?

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answered Apr 15, 2015 by AlexTinsley (912,210 points)
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An expander is similar to a compressor in function; however it increases the dynamic range of signal whose amplitude has fallen below a specified threshold.  When used in conjunction with a compressor it smoothes the dynamic range.  If a compressor limits the dynamic ceiling, than an expander raises the dynamic floor thus creating a more evenly directed dynamic space.