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<TITLE>DAM</TITLE>
<CENTER><A NAME="dam"></A>
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<H2>
dam</H2>
<PRE> aout <B>dam</B> ain, kthreshold, icomp1, icomp2, rtime, ftime</PRE>
<HR>
<H4>
<U>DESCRIPTION</U></H4>
This opcode dynamically modifies a g<I>ain</I> value applied to the input
sound '<I>ain</I>' 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.
<H4>
<U>INITIALIZATION</U></H4>
<I>icomp1 -</I> Compression ratio for upper zone.
<BR><I>icomp2 -</I> Compression ratio for lower zone.
<BR><I>rtime - </I> Gain raise time. Time over which the gain factor
is allowed to raise of one unit.
<BR><I>ftime -</I> Gain fall time. Time over which the gain factor is allowed
to decrease of ine unit.
<H4>
<U>PERFORMANCE</U></H4>
<I>aout</I>: Output sound stream <I>ain</I> : Input sound stream
<BR><I>kthreshold</I>: Sound level acting as a threshold. Can be changed
at ktime (e.g. for ducking)
<P>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).
<BR>
<H4>
<U>AUTHOR:</U></H4>
Marc Resibois
<BR>Belgium
<BR>1997
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