Yamaha Programmable Mixer 01 User Manual page 79

dB
+20
+10
0
Threshold = -20dB
-10
-20
-30
-40
-50
Range = -30dB
-60
-70
-70 -60 -50 -40 -30 -20 -10 0 +10+20
Input level
Ducking
Ducking is commonly used for voice-over applications, where the
background music level is reduced automatically when an announcer
speaks. Ducking is achieved by triggering a compressor with a differ-
ent sound source. For example, a ducker is patched into the back-
ground music channel, and the KEY IN signal is sourced from the
announcer's microphone channel. When the announcer's micro-
phone level exceeds the specified threshold, the background music
level is reduced automatically, allowing the announcer to be heard
clearly. The same technique can also be used for vocals in a mix. For
example, ducking backing sounds such as rhythm guitar and synth
pad during vocal phrases allows the vocals to be heard clearly. This
can also be used to bring solo instruments up in a mix.
Ducking parameters are:
Threshold (–50...+10dB) — This determines the level of trigger sig-
nal (KEY IN) required to activate ducking. Trigger signal levels below
the threshold do not activate ducking. Trigger signals at and above the
threshold level, however, activate ducking, and the signal level is
reduced to a level set by the Range parameter. The trigger signal is
sourced using the KEY IN parameter.
Attack (0–120ms) — This determines how soon the signal is ducked
once the ducker has been triggered. With a fast attack time, the signal
is ducked almost immediately. With a slow attack time, however,
ducking appears to fade the signal. Too fast an attack time may sound
abrupt.
dB
Hold (3–341ms) — This determines how long ducking remains
active once the trigger signal has fallen below the threshold level.
Decay (85ms–10.9s) — This determines how soon the ducker
returns to its normal gain once the trigger signal level drops below
the threshold.
Range (–80...0dB) — This determines the level to which the signal
is ducked. For a setting of –80dB, the signal is virtually cutoff. For a
setting of –30dB, however, the signal is ducked by 30dB. For a setting
of 0dB, the ducker has no effect.
71
Processor Types
ProMix 01 User's Guide