Definition of Terms | Polycom EF2241 specs

DEFINITION OF TERMS

room gain of this microphone channel is said to be 0 dB. If the reflected signal picked up by the microphone is higher than the level of the signal sent to the line output to your amplifier, that microphone channel has positive room gain. The more positive the room gain, the harder the AEC must work to determine which signal is an echo and which is a local speech signal.

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VORTEX EF2241 Reference Manual

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Polycom EF2241 manual Definition of Terms

Contents

Vortex EF2241 Reference Manual Page Introduction Introduction Welcome How to Use This Manual Product Features Product RegistrationProduct Inputs Outputs Remote Control What’s Not Included PRE-INSTALLATIONTools Needed for Installation What’s Included EF2241 Front and Rear Panels PRE-INSTALLATION North American Requirement InstallationConnecting the EF2241 to Other Equipment Mounting the EF2241 Codec Typical EF2241 Connections Device IDS on the EF BUS Connecting Multiple Vortex Devices Terminating the EF2241 Factory Default Settings Preset Off Presets Multiple Vortex Devices Pick a Standard Signal LevelCheck Surrounding Equipment Configure Program Audio Sources Input Settings Integrating the EF2241 Into Your SystemCalibration Set Levels on Line Input Channels Customize Setting for Your Particular Application SET UP the Phone InterfaceBuild Your Echo Canceller Reference Echo Canceller Reference for Multiple Vortex Devices Bus Reference Setting up Automixer Parameters Configure the Automatic Microphone Mixer Global Settings Channel Settings Automixer Settings for Multiple Vortex Devices Configure the Matrix Mixer Default SettingsBuilding Your System with Multiple Vortex Devices Assign Inputs Assign Outputs Configure the submatrix EF BUS Presets Other EF2241 FeaturesConfigure Your Echo Canceller Reference LCD Menu Tree LCD Menu Structure LCD Menu Structure System System Menu Phone Control Phone Control Inputs 1-4, T, A-D Inputs Automixer Menu Outputs Global Settings Mixer Settings Matrix Matrix Menu Input/Output EQ Channel Band Parametric EQ Menu Macros Presets Too many microphones are gating TroubleshootingAutomatic Microphone Mixer No microphones are gating Some microphones are not gating Room Audio Sounds Choppy Echo Canceller ReferenceMatrix Mixer Residual Echo Finding the Source of Echo Room Gain Room Gain Excessive Room Gain In-Conference Quick Check Excessive Microphone Amplification Nonlinearity Insufficient Email vortex@polycom.com Contacting Technical Support Technical Specifications Compliance USA and CanadaUS Telco requirements Canadian Telco Requirements Automatic Dialing Telco Connector Rest of World Australia This page was intentionally left blank CE Mark R& TTE Directive Vortex EF2241 Reference Manual Technical Support Noise and Reverberation Consider Room Gain Conference System Design EN Echo Canceller, Noise Canceller EF2241 Block Diagram EF Bus Connector Pinouts Input/Output Remote Control Port Connecting Unbalanced RCA to Balanced Mini Phoenix Making AN EF BUS TerminatorInstructions Additional Notes RMA# Must be on package Warranty Information State Law Rights What this warranty does not cover Crosspoint Mix Minus Bus Echo CancellerDefinition of Terms Acoustic Echo NOM NOM Attenuation NOM Bus Presets Room Gain Definition of Terms Index NOM Index Page 1725-80098-001-C