Polycom EF2241 manual Global Settings

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LCD MENU STRUCTURE

THRESHOLD, MANUAL THRESHOLD, and GATE PRIORITY.

Signal Level

Channel turns on when
signal level is above
signal level is above
Adaptive Threshold
					DECAY
						TIME
Channel ON
Channel ON

ADAPTIVE THRESHOLD		Microphone		HOLD
ADAPTIVE THRESHOLD		Audio		TIME
Channel OFF		Audio		TIME
Channel OFF
Ambient Level

OFF ATTENUATION

Time

Automixer

Global Settings

Decay

Hold Time

Camera Gating

Threshold

Figure 22. Automixer parameters.

Global Settings.

Decay Time. Decay time is the amount of time the microphone audio takes to ramp down to the Off Attenuation level after Hold Time. Decay Time values range from 0 to 5000 msec. The default value is 1000 msec.

Hold Time. This is the amount of time the microphone stays On after the energy in the channel drops below the gating threshold. The default value is 500 msec. The range is 1 to 5000 msec. Microphone channels gating On and Off too fre- quently during short pauses in speech might be the result of setting the Hold Time too low while too many microphones gating on at the same time may be the result of Hold Time values that are too high.

Camera Gating Threshold. Specifies the hold time for camera gating informa- tion.

VORTEX EF2241 Reference Manual

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Contents Vortex EF2241 Reference Manual Page Introduction Welcome How to Use This Manual IntroductionProduct Registration Product FeaturesProduct Inputs Outputs Remote Control What’s Included PRE-INSTALLATIONTools Needed for Installation What’s Not IncludedEF2241 Front and Rear Panels PRE-INSTALLATION Mounting the EF2241 InstallationConnecting the EF2241 to Other Equipment North American RequirementTypical EF2241 Connections CodecConnecting Multiple Vortex Devices Device IDS on the EF BUSFactory Default Settings Preset Terminating the EF2241Off Pick a Standard Signal Level Presets Multiple Vortex DevicesCheck Surrounding Equipment Configure Program Audio Sources Integrating the EF2241 Into Your System Input SettingsCalibration Set Levels on Line Input Channels Echo Canceller Reference for Multiple Vortex Devices SET UP the Phone InterfaceBuild Your Echo Canceller Reference Customize Setting for Your Particular ApplicationSetting up Bus ReferenceConfigure the Automatic Microphone Mixer Automixer ParametersGlobal Settings Automixer Settings for Multiple Vortex Devices Channel SettingsDefault Settings Configure the Matrix MixerBuilding Your System with Multiple Vortex Devices Configure the submatrix Assign Inputs Assign OutputsEF BUS Other EF2241 Features PresetsConfigure Your Echo Canceller Reference LCD Menu Structure LCD Menu TreeLCD Menu Structure System Menu SystemPhone Control Phone ControlInputs Inputs 1-4, T, A-DOutputs Automixer MenuGlobal Settings Mixer Settings Matrix Menu MatrixParametric EQ Menu Input/Output EQ Channel BandPresets MacrosNo microphones are gating Some microphones are not gating TroubleshootingAutomatic Microphone Mixer Too many microphones are gatingResidual Echo Echo Canceller ReferenceMatrix Mixer Room Audio Sounds ChoppyFinding the Source of Echo Room Gain Excessive Room Gain Room GainIn-Conference Quick Check Excessive Microphone Amplification Insufficient NonlinearityContacting Technical Support Email vortex@polycom.comTechnical Specifications USA and Canada ComplianceUS Telco requirements Automatic Dialing Telco Connector Canadian Telco RequirementsAustralia Rest of WorldThis page was intentionally left blank CE Mark R& TTE Directive Vortex EF2241 Reference Manual Technical Support Conference System Design Noise and Reverberation Consider Room GainEF2241 Block Diagram EN Echo Canceller, Noise CancellerConnector Pinouts EF BusInput/Output Remote Control Port Making AN EF BUS Terminator Connecting Unbalanced RCA to Balanced Mini PhoenixInstructions Additional Notes Warranty Information RMA# Must be on packageWhat this warranty does not cover State Law RightsAcoustic Echo Echo CancellerDefinition of Terms Crosspoint Mix Minus BusNOM Attenuation NOM Bus Presets Room Gain NOMDefinition of Terms Index NOM Index Page 1725-80098-001-C