Specifications

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GLOSSARY
Acoustic Echo Cancellation (AEC)
A process in which acoustical echo is removed from a signal. AEC can be used to remove unwanted signals from mic
audio if the unwanted acoustic signal is available separately as an electronic signal.
Adaptive Ambient
This portion of the mixer monitors the varying ambient noise level in the room and changes the threshold level at which a
microphone gates on.
Ambient Level
The manually-set background noise level upon which the Converge Pro 880/840T bases gating protocols. Used only if
the Adaptive Ambient feature isn’t used.
Ambient Noise
The existing room-level noise, such as that caused by ventilation systems, paper shuffling, and background chatter.
ASCII
The American Standard Code (for) Information Interchange. Standard code for transmitting alphanumeric characters
electronically.
Attack
This signal parameter determines how quickly compression is enabled. It is calibrated in milliseconds.
Attenuation
A reduction of signal amplitude.
Audio Processor
A device that modifies an audio signal in response to certain requirements.
Automatic Gain Control (AGC)
Automatically increases or decreases audio gain to maintain a consistent audio level.
Automatic Gating
Automatically gates microphones on or off based on input levels and other parameters programmed into the Converge
Pro 880/840T.
Bandwidth
The difference between the lower and upper 3dB endpoints of an audio band. Also, the range or differences between the
limiting frequencies of a continuous frequency band.
Baud Rate
The number of signal transitions per second, or the clock rate of the serial bit stream in hertz. Given 7 or 8 bits for data
plus start and stop, the approximate ASCII character transmission rate is one-tenth the baud rate.
Chairman Override
Provides gating priority for all microphones selected for the chairman override group. When a mic in this group gates on,
all microphones not included in this group gate off.
Clipping
A condition in which a signal level exceeds the maximum level a circuit can handle. This is usually caused by over driving
an input. It always causes distortion and typically leads to listener fatigue and accelerated failure of loudspeaker drivers.
Compression
An induced reduction in the dynamic range of part or all of an audio signal. Compression is usually used to protect
individual loudspeaker components from the damaging effects of transients.