Wall Plate Media Center Microphone Input
Crestron
QM-WMIC
Adjusting the QM-WMIC
Once a QM-WMIC is installed and configured, settings for gain, gating
level, attack time, and decay time must be set using the Realtime Mode in
Digital Media Tools (version 3.00.00 or later). Digital Media Tools
software can be started from the SystemBuilder application.
NOTE:
Crestron recommends that you use the latest software to take
advantage of the most recently released features. The latest software is
available from the Downloads | Software Updates section of the Crestron
website (
Definitions
The QM-WMIC allows for adjustments to be made to microphone input
signals. Following are definitions of terms that are commonly used when
making adjustments to the QM-WMIC.
Attack Time
The time it takes (in milliseconds) from when an input signal rises above
the gating level until the microphone output signal is enabled.
Clipping
A condition in which a signal level exceeds the maximum level (the
clipping level) a circuit can handle. This is usually caused by improper
gating parameters and gain settings.
Decay Time
The time (in milliseconds) from when an input signal falls below the
gating level until the microphone output signal is muted.
Gain
An adjustable amplification to accommodate varying input signal levels.
Gating
A function that mutes a microphone signal when the input sound level is
below a user-set threshold (Gating Level).
The following diagram demonstrates Clipping, Attack Time, Decay
Time, and Gating level.
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Wall Plate Media Center Microphone Input: QM-WMIC
Operations & Installation Guide - DOC. 6245
