User's Manual

AtlasIED.com – 46 –
Specifications are subject to change without notice.
User GuideBlueBridge Designer II
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Ambient Noise Compensator - The Ambient Noise Compensator is used for speech & paging applications. It adjusts its output level
automatically in response to variations in the ambient noise level. The ambient noise is measured in the output gaps, when no signal to
the outputs is present, or drops to below a pre-defined threshold.
Max Gain (-30 to +20db) is the limit that the ANC will raise the signal by.
Min Gain (-30 to +20Db) is the lowest level that the signal will lower itself to.
Speed (1-60 Seconds) is the amount of time the volume change occurs over.
Gap Threshold (-60 to -20db) is the level that the module sees as the point where it will take a sample from the mic on the modules
background input.
Gap Time (1-2000ms) is the time sampled for the reference ambient noise level.
Gap Interval (60-3600 Sec) is the period between the samples of background noise.
Averaging Count (1-10) is how many samples are averaged to determine the background noise.
Ambient Noise (-60 to -12 Db) is the reference background noise level with no program material.
Update Gain Pressing this button causes the ANC to immediately update its gain prior to the next scheduled reading.
Acquire Threshold Pressing this button with no program source input calibrates the normal ambient level.
Fig 77