Grass Valley iMC-Panel-100 v.7.0.9.0 - Manual (Page 137)

Master Control • iMC-Panel-100 Operator’s Guide 125
6. Operation
Working with Audio Levels
‘Over Ratio/Duck Level’ Knob
Use this knob to adjust the “duck level” of program audio. (The term over ratio applies only when
the panel is controlling an MCE or MCPM.)
As a reminder, there are two levels that govern the use of voice-overs: the “duck” level and the over
level:
Both of these values are expressed in decibels (in the range –100.0 dB to +28.0 dB). This knob
adjusts the “duck level” in increments of 0.5
dB.
When no voice-over is active on the program bus, the knob is inoperative.
When one voice-over is active on the program bus, the knob controls the audio level of the program
source for the selected voice-over signal.
When both voice-overs are active on the program bus, the knob controls the level of the program
source for both voice-over signals. The effect is additive: a turn of the knob adds the same amount
to each voice-over level.
You can also change the duck level, as well as the over level, in the ‘Voice-over 1’ menu or the
‘Voice-over 2’ menu. There are separate duck levels and over levels for each VO.
Menus
There are 5 menus for working with audio levels:
• Program input audio and preset input audio — the Imagestore 750’s audio inputs.
• Program output audio — the Imagestore 750’s audio outputs.
• Voice-over audio (1 and 2) — the Imagestore 750’s voice-over inputs.
The menus all function the same way, although they affect different parts of the Imagestore 750.
S The program and preset audio inputs apply individually to main sources. You can save and
restore audio settings for each source.
Over Level
Duck Level
Main Source Audio
Over Audio