Glossary ~ | 61 |
Glossary |
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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 Mode An automixing function that dynamically changes the ambient noise reference level based on a moving average of the actual noise floor of the room as picked up by the microphones.
Ambient Level The sound pressure level (SPL) of a room when no one is speaking and no external audio is present. Also known as noise floor.
Ambient Noise The existing
Attenuation A reduction of signal amplitude.
Automatic Gain Control (AGC) Automatically increases or decreases audio gain to maintain a consistent audio level.
Automatic Microphone Mixer A microphone mixer that automatically activates and deactivates microphone channels. This serves to increase intelligibility of the audio by reducing reverberation and noise picked up by the microphones.
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
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 overdriving an input. It always causes distortion and typically leads to listener fatigue and accelerated failure of loudspeaker drivers.
Decay Rate The rate at which an automatic mixer attenuates a microphone channel’s audio level.
Digital Hybrid A telephone hybrid that uses digital signal processing to provide excellent audio separation between the send and receive audio paths.
Digital Signal Processor (DSP) A high speed digital numeric processor that can rapidly calculate complex mathematical equations. The DSP is the most important component used in ClearOne digital products.
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