User manual BIAMP CX 23

[. . . ] 4 Level Inc/Dec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Invert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Mute Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Preset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Like other component objects, CX 23 VC blocks can be placed into the Layout either from the Processing Library or from the Object Toolbar. To access VC ­ Codec Out 1 Channel settings, double-click over the corresponding block in the Layout. This opens a Control Dialog Box which provides all available settings. Device IO indicates which hardware output is associated with that software channel. Full Scale (dBu) Out selects the appropriate maximum line output reference level. Right-clicking over certain settings will provide a menu of additional options. Each CX 23 VC comes pre-configured from the factory with a default system design. If you wish to load your own custom designed configuration you will need to reset/initialize the unit(s) first. VC Default Configuration Videoconference System Each Nexia device comes pre-configured from the factory with a default system design. The factory default configuration for a CX 23 VC is a 'videoconference system' with 8 automixer AEC mic inputs, 2 program line inputs, and a codec input feeding a matrix to 4 outputs and a codec output (see design layout below). This "VC Default Configuration. NEX" file can be found under Sample Files on the CX 23 software CD. If you wish to load your own custom designed configuration you will need to reset/initialize the unit(s) first. 93 Nexia-Manual-A4 TC TC Hardware AEC Inputs: These eight plug-in barrier strip connectors provide balanced input for microphone or line level signals, and include selectable acoustic echo cancellation and background noise reduction. For unbalanced input, wire high to (+) and ground to both ( ) & (-). Settings for these inputs are accessed by double-clicking the TC - AEC Input 8 Channel (or TC - AEC Ref 8 Channel) blocks, and the optional TC - Pre-AEC 8 Channel block, in the Layout. Mic/Line Inputs: These two plug-in barrier strip connectors provide balanced input for microphone or line level signals. For unbalanced input, wire high to (+) and ground to both ( ) & (-). Between these blocks can be placed virtually any of the other available CX 23 mixing, routing, and processing blocks (component objects). Like other component objects, CX 23 TC blocks can be placed into the Layout either from the Processing Library or from the Object Toolbar. To access TC ­ AEC Input 8 Channel settings, double-click over the corresponding block in the Layout. This opens a Control Dialog Box which provides all available settings. 96 Component Objects Device IO indicates which hardware input is associated with that software channel. Gain In compensates for different input levels (mic or line), and should be set so Peak In flashes only occasionally (6dB headroom). Phan Pwr assigns +48 Volt phantom power to the input for condenser microphones. Noise Reduction In selects the amount of background noise reduction to be applied (6~15dB). Each channel of AEC has an Advanced dialog box. ERL (Echo Return Loss) shows the level difference between a signal at the speaker output (AEC Ref) and that same signal as picked up at the mic (AEC Input). ERLE (Echo Return Loss Enhancement) indicates the amount of processing being applied on that channel. TER (Total Echo Reduction) shows the combined echo reduction achieved by acoustic damping (ERL) and signal processing (ERLE). Nonlinear Processing provides additional echo cancellation, for more challenging applications. [. . . ] 69 SP Inputs 4 Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 SP Output 8 Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Space. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Speaker Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]