Attack; Ratio; Release - API 2500+ Operator's Manual

4.1.2 ATTACK

4.1.3 RATIO

4.1.4 RELEASE

2500+ Bus Compressor
ATTACK: Sets the time it takes the compressor to react when the level
exceeds the set THRESHOLD
Fixed attack times: .03, .1, .3, 1, 3, 10, and 30 milliseconds (m/sec)
•
RATIO: Sets the ratio of input vs. output levels for signals that fall above
the set THRESHOLD
• Fixed ratios: 1.5:1, 2:1, 3:1, 4:1, 6:1, 10:1, and ∞:1 (x:1)
• Compression with ratios of 10:1 or greater is generally
considered to be limiting
RELEASE: Sets the time it takes the compressor
to recover to unity gain after the level falls below
the set THRESHOLD
• Fixed release times: .05, .1, .2, .5, 1, and
2 seconds
• Variable release times continuously variable
between 50m/sec and 3 seconds (sec)
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API