Biamp LTR - Manual (Page 135)

Component Objects
Ambient Noise Compensator
Ambient Noise Compensators automatically adjust program volume in response to changes in
background noise levels, as monitored by external ambient sensing microphone(s). Program
Mute
turns the program input signal on/off. Program Level adjusts the relative program input
volume. Program Label provides a custom label, when the dialog box is minimized (see below).
Prog Meter
displays the current program input level. Ambient Mute turns the ambient input
signal on/off. Ambient Level adjusts the relative ambient input volume. Ambient Threshold
determines the ambient noise level at which program gain increases will begin. Ambient
Response
sets the period of time to be considered when calculating an average of ambient
level changes. Ambient Label provides a custom label, when the dialog box is minimized (see
below). Amb Meter displays the current ambient input level. The Set Threshold button can be
used to estimate an appropriate Ambient Threshold setting. Gain Min sets the minimum output
gain (for periods of low ambient noise). Gain Max sets the maximum output gain (for periods of
high ambient noise). Gain Ratio determines how much the program volume will increase,
relative to a given increase in ambient noise. Gain Time establishes how quickly program gain
changes are applied. Gain Time indicates the amount of time required for a gain change
between Min and Max settings. Lesser gain changes will occur more rapidly. Gain Meter
displays the current gain compensation being applied. Bypass disables the Ambient Noise
Compensator without changing settings.
Right-clicking over certain settings will provide a menu of additional options. Control Dialog
Boxes for Ambient Noise Compensators can be minimized to create user control surfaces (see
Customizing Component Objects ).
see Ambient Noise Compensator setup procedure.
ANC Setup Procedure
Connections
 Feed the "program" signal into the Program Input (top left) of the ANC block. Setup of
the ANC block is best done with a relatively constant program source. This can be the
actual program source or a pink noise approximation, but its level should represent the
highest program material level you expect will be fed to the ANC block.
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