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ar dam ain, kthreshold, icomp1, icomp2, rtime, ftime
This opcode dynamically modifies a gain value applied to the input sound ain by comparing its power level to a given threshold level. The signal will be compressed/expanded with different factors regarding that it is over or under the threshold.
icomp1 - Compression ratio for upper zone.
icomp2 - Compression ratio for lower zone
rtime - Gain raise time. Time over which the gain factor is allowed to raise of one unit.
ftime - Gain fall time. Time over which the gain factor is allowed to decrease of one unit.
aout - Output sound stream
ain - Input sound stream
kthreshold - Sound level acting as a threshold. Can be changed at ktime (e.g. for ducking)
Note on the compression factors: A compression ratio of one leaves the sound unchanged. Setting the ratio to a value smaller than one will compress the signal (reduce its volume) while setting the ratio to a value greater than one will expand the signal (augment its volume).
Marc Resibois
Belgium
1997
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