Part C: Continuous Ambient Compensator

Lesson Description

Part C focuses on the DIFFERENCE between the Gated Ambient Compensator and the Continuous Ambient Compensator.

Helpful Tips and Definitions

Continuous Ambient Compensator: This component uses the audio signal of a microphone positioned in the room to detect change in crowd noise. To filter out the Program Material that is also being picked up by the microphone, it uses a Reference signal of the audio sent to the loudspeakers and digitally “subtracts” that noise from the Microphone line to listen to change in crowd noise. (This takes up much more digital processing power than the Gated Ambient Compensator.)

Reference Pin: This pin should represent the audio that is being sent to the loudspeakers in the system. It is important to take this Reference line from as late in the signal flow as possible so that the Compensator has an accurate audio print to remove from the Microphone line.

Relative Venue Size: This knob represents the size of the room, estimated on a scale of 1-10. Since larger rooms will have a different frequency response than small rooms, this helps the Compensator model the room to efficiently remove the Reference signal from the Microphone signal.

Mic/Speaker Distance: This knob should be set to the physical distance, in meters, between the microphone and the nearest loudspeaker in the room. This helps the Compensator model the room’s frequency response.

Ambient Pin: This output pin provides the recovered ambient noise of the room, or the Microphone signal with the Reference signal removed from it, which is what the component uses to detect the change in crowd noise.

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