Audient ASP2802, Руководство по эксплуатации

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Bus Compressor
Attack Time
Specified in milliseconds (ms) - this is the time taken for the
compressor sidechain to react to the input signal above the
threshold and trigger gain reduction (compression).
Attack times can be set to:
• 0.1 ms
• 0.3 ms
• 1 ms
• 3 ms
• 10 ms
• 30 ms
Typically on program material and mix bus use, slower attack
times (try 10 or 30 ms for a punchy starting point) are preferred
as they will not mangle transient material or distort low
frequency content as much as faster times.
If the attack or the release time is faster than one cycle of the
lowest frequency to be reproduced, distortion will occur as the
compressor will alter the waveshape during one cycle.
Remember that the period of one cycle, T(sec) = 1/f (Hz) .
The following diagram illustrates typical waveshaping at 60Hz
(approximately 17ms period) as created by relatively fast attack
and release times (10ms attack, 0.1 sec release at 4:1). Note that
aside from some attack waveshaping, the ASP2802 compressor
is very clean!