Yamaha DME32 Owner's Manual page 133

2 dB change in output level. Compression ratios above 10:1 limit signals rather than
compress them.
The expansion ratio is fixed at 5:1, so a 2 dB change in trigger level (below the thresh-
old) results in a 10 dB change in output level.
WIDTH —This determines how far below
the threshold level expansion is applied. The
expander is essentially turned off when the
width is set to 90 dB.
ATTACK —This determines how soon the
signal is compressed and expanded once the
Compander has been activated. With a fast
attack time, the signal is companded almost
immediately. With a slow attack time, how-
ever, the initial transient of a sound passes
through unaffected. Attack times from 1 to 5
milliseconds are a good place to start.
RELEASE —This determines how soon the compressor and expander return to their
normal gains once the trigger signal level drops below the threshold. If the release time
is too short, the gain will recover too quickly causing level pumping (i.e., noticeable
gain fluctuations). If it is set too long, the compressor may not have time to recover
before the next high level signal appears, and it will be compressed incorrectly. Release
times from 0.1 to 0.5 seconds are a good place to start.
GAIN —This sets the Compander's output signal level. It can be used to compensate for
the overall level change caused by the compression and expansion processes.
Dynamics
+20
+10
Width
0
–10
–20
–30
–40
–50
–60
–70
–70 –60 –50 –40 –30 –20 –10
Input Level (dB)
DME32—Owner's Manual
127
Threshold
0 +10 +20