Crown 137769-3 operation manual Automixer, Priority Ducking

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DBC Network Bridge

5 Advanced Operation

5.3.5 Automixer

Automatic mixers allow 'hands-free' mixing that minimizes many of the undesirable effects of using multiple microphones. Applications such as confer- ence rooms, training rooms and boardrooms typi- cally implement many microphones for individual speakers. Simultaneously mixing all microphones with acceptable gain before feedback manually is not possible.

The DBC Network Bridge implements three auto- mixing functions to address this situation: Priority Ducking, NOM Attenuation and Adaptive Gating.

Each of the sixteen Input Processing Sections can be grouped into any of 32 Auto-Mix Groups. In addition to the Group assignment, each Input Sec- tion includes a separate 'Enable' control. This con- trols whether the respective channel participates in its assigned groups AutoMixing functions. There are group Automixing controls and individual Input Processing Section controls. Automixing’s effect on input gain is metered by the Input Dynamic Cut/ Boost Meter.

Priority Ducking

Enforces a priority order of open microphones such that high priority inputs duck (attenuate) lower-pri- ority inputs. Additionally, a maximum number of equal-priority open microphones may be specified. Each input can be assigned a Priority from 1 (high- est) to 8 (lowest). When an input gate opens, it is allowed to pass according to the priority that has been assigned and is dependent upon the other open inputs within its group.

Keeping the number of open microphones to a min- imum reduces background noise while allowing a higher gain before feedback for improved intelligi- bility.

Input gates must be enabled for all inputs participat- ing in Priority Ducking within an Automix Group. If an input belongs to more than one Auto-Mix Group, it MUST be the highest priority in all of the groups in which it participates.

Operation Manual

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Contents Some models may be exported under the name Amcron DBC Network BridgeUse only with a cart, stand, tripod, bracket, or Important Safety InstructionsEMC Standards Safety StandardEuropean Representatives Name and Address Equipment Type Digital B-ChainAudio and Network Connections Please refer to Figures 1.1 Getting Started With the DBC Network BridgeDBC DB25F Digital AES/EBU Pinouts 3 TCP/IQ Addressing Rules IntroductionSelecting Settings Control Panel 4 TCP/IQ SetupInternal Properties Window 5 TCP/IQ Addressing Worksheet Example of AN IQ Addressing Worksheet2C. Close the software. Repeat as necessary 11 The Discovery Screen 14 The Unit Presets Window Table of Contents Welcome FeaturesHow to Use This Manual 3CREEN #HANNELS#ANDA3UBWOOFERS Connecting to AC Mains SetupUnpack and Install Your DBC Network Bridge Speech Mic, speech DBm/dBV WiringAnalog, Digital and Auxiliary Inputs Dynamic mic Condenser mic Hot condenser MentBalanced Monitor Output Wiring Balanced Input WiringUnbalanced Input Wiring Control Port Connections Unbalanced Monitor Output WiringCobraNet Connections Operation Monitor Out Connector Back Panel Controls and Connectors IEC AC Power InletPrimary Network Connector Secondary Network ConnectorLCD Control Screen shows SceneMenu Tree Operation ExamplesOperation Example System Overview Presets and ScenesIQwic Overview PC RequirementsInput Level Meters Preset InformationMetering Output Level MetersFront Panel Control Lock Out LED Display ModeGeneral Tab Real Time ClockBasic Processing Functions Signal Path Tab, Cinema Surround FormSurround Per-Channel Signal Processing Booth Monitor Source SelectThreshold Input CompressorOn/Off Compression RatioChannel Select Input DelaySignal Path window Delay SettingsFrequency Response Graph Frequency, Gain and Q SettingsEQ Filters Add ButtonCombined Responses Show Magnitude/PhaseFrequency Select Field Frequency SliderMaster fader works like this All Outputs Volume Controls13 Signal Generator Window Signal GeneratorCobraNet Explanation 14 CobraNet Output Window CobraNet OutputDBC Outputs Meters CobraNet Bundle/Channel Selector Input Selector Buttons Level SliderMute Button Polarity ButtonStandard Cinema Preset Button Preset PresetsPreset Segue Preset Options NoticePreset Select Buttons Preset EditorPreset Name Preset Control Window18 Scenes Window ScenesNamed Scene EditorScene Controls20 Events Scheduler Window Events SchedulerSchedule One Time EventsPeriodic Events Output Dynamic Cut/Boost Meters General Firmware Features Input Level MetersMemory Backup Input Dynamic Cut/Boost MetersAdvanced Operation Advanced Operation Table of ContentsSystem Contact System NameSystem Description System LocationConductor CobraNet SetupStatus indicators IP AddressCobraNet Input Window CobraNet InputControl Port Window Control PortPin Pin State IndicatorControl Port Window Digital Inputs Edit ButtonsSet Objects Recall PresetAdd / Remove Buttons Object ListInclude Control Port Condition Logic Setup WindowCondition NameManual Output State Pin State IndicatorReflect Preset Control Port Window Digital Outputs SectionControl Port Window Analog Outputs Section Control Port Window Analog Inputs Section AINInput Path Input Level/Polarity/Mute same as Advanced Form Firmware FeaturesInput Delay Input Gate Auto Level Settings Output Path Same as Output DelayInput Selector Input Select SwitchInput Signal Fader, Muter, and Inverter Input Path19 Input Delay Window Hardware DelaysHysteresis Signal DelayDepth Static ThresholdIdle Gain Auto-LevelerTarget Level Max GainPriority Ducking AutomixerDepth of Cut Ambience WeightingAutomix Controls Priority24 Automix Matrix Window Automix MatrixAutomixing Group Controls Priority Mix EnableHighest Open Mic Priority Indicator EnableAutomix Group Adaptive GatingAmbient Level Meter Group Gate Threshold Ambient Offset27 Solo/Mute Window Solo/MuteOutput EQ Filters Output PathOutput Processing Sections Expansion Ratio Program Level Dependent ModeSense Delay Ambient LevelerFour parameters control this feature 32 Outputs Window Outputs ButtonOutput Section Technical DescriptionAudio Input Section DSP Processing SectionAdditional Error Checking TroubleshootingCondition Both LEDs flashing Advanced Signal Path Window with Preset-32 Icons Enabled Specifications Required AC Mains AC Line Connector 15A IEC AC power inletGlossary Appendix a TCP-IQ Network BasicsTCP/IQ Network Basics Component firmware upgrades via the networkMultiple Network Communication Via an IP Router 1Fast Ethernet 100Base-T Closer Look at CobraNetRepeater Networks Switched NetworksAudio Specs Bundles and Audio ChannelsService United States & Canada WarrantyWorldwide Except USA & Canada Credit card information Crown Audio Factory Service InformationDBC Network Bridge

137769-3 specifications

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