Maximum Gain Slider, Target Level Slider | ClearOne comm PRO 8I

Use the AGC/ALC radio buttons to select Off, ALC, or AGC. The default is Off. ALC is performed automatically; there are no user-configurable settings for ALC.

NOTE: AGC occurs after gain and filter settings in the audio signal path.

The configuration controls for AGC are described in the following sections.

Maximum Gain Slider

Set the Target Level first, then set the Maximum Gain that you want the AGC to apply to the signal. Maximum Gain is set using an RMS (Root Mean Square) level, which is the average magnitude of the audio signal over time. Maximum Gain range is 0 to 18dB in 1dB steps. The default value is 6dB.

Target Level Slider

Target Level (RMS) sets dB level for AGC to maintain. Target Level range is from -30 to 20dB in 1dB steps. The default target level is 0dB.

Active Gain Meter

The Active Gain Meter displays the gain adjustment being applied to the channel by AGC.

Response Time Slider

Response Time sets the amount of time (in milliseconds) over which the level is averaged before AGC is activated or deactivated.

Threshold Slider

Threshold sets the dB level at which AGC engages. The Threshold is set using an RMS (Root Mean Square) level, which is the average magnitude of the audio signal over time.

NOTE: Setting the Threshold above the background noise level will prevent AGC from amplifying background noise.

For additional information, refer to the Table of Contents for these related topics:

•Channel Tab Overview

•AEC (Acoustic Echo Cancellation)

•NC (Noise Cancellation)

•Mic Gating

•Filters

•Line Input Settings

•Mic Input Settings

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ClearOne comm PRO 8I Maximum Gain Slider, Target Level Slider, Active Gain Meter, Response Time Slider, Threshold Slider

Contents

Converge PRO 880880T880TA840T8iTH20 Converge SR 1212SR 1212A Adobe Flash Copyright and Trademark Notice Clearone Part no -151-880 Revision 3.2 April Introduction 218 310 Applications Converge Pro Product Family Overview Feature Enhancements Common FeaturesModels Common Benefits Telephone Hybrid Enhancements 880T, 880TA, 840T, TH20 AEC Acoustical Echo Cancellation Enhancements Read all safety information before using this product Important safety information Converge Pro 880TA Advanced Telephone Conferencing Feature Set Converge Pro Converge Pro Product Descriptions Converge Pro 880T Converge Pro 840T Converge Pro Converge Pro TH20 Converge Pro SR 1212A Converge Pro SR1212 Warranty Information Customer Service and SupportProduct Registration System Requirements Operating Requirements Unpacking Converge Pro 880 Package Contents Converge Pro 880T Package Contents Converge Pro 880TA Packing Contents Converge Pro 840T Package Contents Converge Pro 8i Package Contents Converge Pro TH20 Package Contents Converge Pro SR1212 Package Contents Converge SR 1212A Packing Contents Converge Pro Front Panels Controls and ConnectionsConverge Pro 880 Front Panel Converge Pro 840T Front Panel Converge Pro TH20 Front Panel Converge Pro 8i Front PanelConverge Pro SR1212 Front Panel Converge Pro SR1212A Front PanelPage Converge Pro 880 Rear Panel Converge Pro Rear PanelsConverge Pro 880T Rear Panel Converge Pro 880TA Rear Panel Converge Pro 840T Rear Panel Converge Pro TH20 Rear Panel Converge Pro Rear Panel ConnectorsConverge Pro SR1212 Rear Panel Converge Pro SR1212A Rear PanelPage Page Expansion Bus Connections Expansion BusAudio and Control Buses Device Types and IDs Device IDsAssigning Device IDs LCD Programming Overview LCD Menu Tree Adjusting LCD Menu ParametersPage Front Panel Lock LCD Default Display Setting Channel Gain and Mute Accessing the Channels MenuLCD Channels Menu Channel Display Accessing the Settings Menu LCD Settings MenuDefault Contrast RS-232 Network Flow Control Hardware Baud Rate LCD Macros Menu Accessing the Macros MenuExecuting Macros Accessing the Presets Menu LCD Preset MenuExecuting Presets Converge Console programming Installing Converge ConsolePage Page Default User ID and Password Accessing Converge ConsoleConverge Console Overview Navigating Converge Console Menu Bar File View Add Connect Modes ServicesButton Bar Site Pane Tab Bar Center Pane Status Bar Objects PaneConsole Modes Site File Overview Accessing Site FilesPage Saving Site Files Connect To a Site Connect to a SiteDisconnect from a Site Site Properties Accessing Site Properties Site Properties General Tab Create a New Site Control Master Unit Site Properties Management TabEmail Notifications Site Properties Time/Local Tab User name/PasswordsPage Unit Properties Accessing Unit Properties Unit Properties General Tab Add a New UnitDevice Name Audio Master Device ID Front Panel Mode & PIN Front Panel Lock/Unlock Default Meter & ChannelRoom Telephone Country Code Serial Port Settings IP SettingsAMX Duet Mode Unit Properties Comm Communications TabPage Accessing Configuration Mode Configuration Mode OverviewConfiguration Mode Tabs Unit Tab Accessing the Unit TabUnit Tab Functionality Output Channel Settings Input Channel SettingsLED Buttons Processing Channel Settings Fader Channel Settings Expansion Audio RX and TX Power Amp Channels Converge Pro 880TA and SR 1212A Sound Mask Launches the Sound Mask pane Page »» Feedback Controls »» Feedback Eliminator Settings »» Filter Depth Mode »» Filter »» ModePage Page Channel Configuration Controls Accessing Channel TabChannel Tab Overview Meters Channel Property Configuration ScreenChannel Routing Matrix Page Page Accessing AEC AEC Acoustic Echo Cancellation PA Adapt and AEC Reference Button Enable AEC CheckboxNLP Non-Linear Processing Radio Buttons ERL Echo Return Loss Meter ERL + Erle Meter PTT Push to Talk Mode Accessing NC NC Noise Cancellation Configuring Noise Cancellation Filters Accessing FiltersAll Pass High Pass Low Pass Notch PEQ Parametric Equalizer Active Filter Adding Filters Filter NodesFilter Types Frequency Available for all filter types Bypass All Phase Remove Filter Add FilterTable View AGC/ALC Automatic Gain Control/Automatic Level Control Tab Accessing AGC/ALC Target Level Slider Maximum Gain SliderActive Gain Meter Response Time Slider Mic Gating Accessing Channel Gating Configurations Auto Gating Settings Gating Settings Auto GatingGate Settings Manual Gating Auto Gating Ambient Tracking Manual Gating Manual On/Manual Off Manual Gating SettingsGating Groups Post Gate MeterPage Accessing Mic Input Settings Mic Input SettingsPpwr Phantom Power Channel Label Gain Section Pre Gain MeterPost Gain Meter Post Process Meter Channel Configuration Buttons Expanded Channel Routing Matrix Channel Routing Matrix Inputs100 101 Creating Channel Objects 102 Optimizing Input Gain Structure Accessing Line Input Settings Line Input Settings103 Mute Button Gain SliderAGC Automatic Gain Control Button 104 Channel Routing Matrix Line Inputs AGC Configuration Settings105 106 Channel Routing Matrix Outputs, Processing, Faders 107 Accessing Telco Rx Settings Telco RX Settings108 109 NC Noise Cancellation Tab 110 Telco Settings TabRinger Cadence Dialer Button Telco Meters Tab111 Recv Boost Slider Dial Tone Level SliderRecv Input Meter 112 Clear Effect Button NC ButtonALC Button NOM Button Post-Gain Meter Min/Max Limits114 115 116 Accessing Output Settings Output SettingsNOM Number of Open Mics/Constant Level 117 Channel Routing Matrix Outputs Output Level Meter118 119 Channel Routing Matrix Inputs, Processing, Faders 120 121 Optimizing Output Gain Structure Accessing Telco Tx Settings Telco TX Settings122 123 Channel Routing Matrix Telco Tx Limiter124 125 126 127 Accessing Processing Settings Processing Settings128 Filter Button Delay Button129 130 Cmprs Compression Button Post Compressor Gain GroupThreshold Ratio Compression Meter Input MeterGain Slider & Process Meter 132 133 134 135 Accessing Fader Settings Fader Settings136 Channel Routing Matrix Faders Gain Slider & Post Gain Meter137 138 139 Matrix Tab Accessing the MatrixRouting Legend 140 Audio Routing Matrix Clear Matrix ButtonInput Routing Expansion Bus I-Z Routing Cross Point Level Control Cross Point Shortcut Menu142 Copy and Paste Matrix Copy and Paste CellsClear Matrix Exporting Matrix Objects AEC Reference/PA Adapt Reference Tab Accessing AEC Reference/PA Adapt ReferenceAEC/PA Adapt References Sources 144 145 Virtual AEC/PA Adapt References PA Virtual References Expansion Bus Reference Sources146 Output channels Speakers Virtual references Macro Tab Accessing MacrosMacro Recorder 147 Creating Macros Macro Editor148 Running Macros Using Console Adding and Inserting Command LinesModifying Macros Deleting Macros Running Macros Using Control Devices Running Macros Using the Front PanelExporting Macro Objects 150 Gating Tab Accessing Gating GroupsGating Controllers 151 Global Gating Groups Internal Gating Groups152 153 User-Definable Pins Accessing the Control TabControl Tab 154 Control/Status Ports Default Pin AssignmentsControl/Status Pin Programming 155 Exporting Control Objects Clearing Pin Programming156 Command String Special Characters Accessing the String TabCreating Command Strings String Tab 158 Running Command Strings Event Scheduler Tab Accessing the Event SchedulerScheduling Events 159 160 Database Tab Accessing the DatabaseDatabase Button Bar 161 Creating a New AV Device AV Devices162 163 Channel ObjectsMic Input Line Input Telco Rx Output Telco Tx Upload/Download AV Devices and Objects Import/Export AV Devices and ObjectsModifying AV Devices and Objects 164 165 Optimizing Gain for Mic Input Channels Optimizing Gain Structure166 Optimizing Gain for Telco Rx Channels Optimizing Gain for Line Input ChannelsOptimizing Gain for Telco Tx Channels Optimizing Gain for Output Channels 168 Accessing Drag and Drop Configuration Drag and Drop ConfigurationUsing Drag and Drop Configuration 169 170 Creating Objects 171 172 Matrix Objects Preset ObjectsControl Objects Macro Objects 174 Accessing Preset Mode Preset Mode175 176 Preset Configuration Tabs 177 Creating Presets 178 Executing Presets Using the LCD Preset Menu Executing Presets Using ConsoleExecuting Presets Using Control Programming 179 Preset Execution Flags Executing Presets Using MacrosPreset Control Masking Preset Storage Space Considerations 181 Exporting Preset Objects File Menu Overview Accessing the File Menu182 File Menu allows you to use Site Files and Print Reports 183 Print Reports Accessing Print ReportsReport Window 184 View Menu Overview Accessing the View Menu185 186 View Menu Options Add Menu Accessing the Add MenuAdding Units 187 188 189 Site Setup Overview Connect To a Site Create a New Site Accessing the Connect MenuConnect Menu Overview Connect Menu Options Configuration Mode Preset Mode Console Button Bar Accessing the Modes MenuModes Menu Overview 191 Accessing the Services Menu Services Menu OverviewService Menu Options 192 Dialer Accessing Dialer193 Placing and Ending Calls Using Line FeaturesMuting Renulling the Line Using Phonebook Accessing PhonebookPhonebook 195 196 Dialer Button Bar Services Menu Overview Using Label Editor Accessing Label EditorLabel Editor 197 Device Log Accessing Device Log198 199 Using Device Log 200 Event Log Accessing Event Log201 Services Menu Event Scheduler Using Event Log202 Configuring User Console Accessing Web BuilderWeb Builder 203 204 Line User Volume Down Volume Up Mute 205 Configuring Control Console 206 Accessing the Web Portal 207 Firmware Loader Accessing Firmware LoaderLoading Firmware 208 209 Debug Console Accessing Debug ConsoleMeter View Tab 210 211 Gate View Tab Test Signal Types Signal GeneratorRunning a Signal Test 212 System Checks Tab Tone Frequency Settings213 PA Temp Define PA Fault Define System Check Config Tab214 215 Sound Masking Tab ADD Info Accessing Execute Presets Execute Presets216 217 Type and Device IDs Command Form DescriptionConventions 218 PA Virtual Reference Groups and Channels219 220 Meter Type Definitions Table 221 AEC Acoustic Echo Cancellation Enable / Disable Serial Command IndexCleareffect Clear Effect Wide Band Telco Emulation 222 223 224 225 Refsel Reference Select for PA Adaptation & AEC 226 227 Serial Commands Aconnlvl Audible Connect / Disconnect Level AD Auto Disconnect Enable / DisableAdclip Audio Clipping 228 AGC Automatic Gain Control Adpresent Audio Presence229 230 AVR Adaptive Volume Reference AVG Adaptive Volume GainAvrt Adaptive Volume Ratio AVT Adaptive Volume Threshold 232 CompdlyEN Compressor Delay Enable Compdly Compressor DelayClock Clock Set 233 Ctrlmaster Control Master Mode Compress Compressor AdjustCompsel Compression Select Country Country Selection 235 Diag Diagnostic Commands Dfltm Default MeterDevicesubtype Sets the Subtype of a Connected Device Devicetype Sets the Type of a Connected Device 237 Enetdomain Ethernet Domain Argument Enetdhcp Ethernet Dhcp Selection238 Eref Expansion Bus Reference FE Feedback Elimination Enable239 Groups and Channels 240 241 FEN Feedback Elimination Nodes 242 Filter Filter Adjust Gain Gain Adjustment FMP First Mic Priority ModeFiltsel Filter Select Flow Flow Control Gate Gate Status Gmode Gating ModeGover Gating Override Gpiostatus General Purpose Status Greport Gate Report Gratio Gate Ratio AdjustGrpsel Gating Group Select Hook Hook Flash 246 247 Logmask Device Log Mask Locstate Location StateLVL Level 248 Lvlreport Level Report Lvlreporten Level Report EnableMacro Macro Execution/Reporting Manufacturer Manufacturer Identification Label Mcgain Multi-Channel Gain MC Multi-Channel Mode250 Mcmute Multi-Channel Min and Max Gain Setting Mcminmax Multi-Channel Min and max Gain SettingMcramp Multi-Channel Ramp DB / sec Mmax Maximum Number of Microphones MIN Minimum Gain Setting252 Mtrx Matrix Routing Model Model Identification LabelMtrxclear Clear Matrix 253 Name Unit Name Netbios Name Mtrxlvl Matrix Attenuation AdjustNCD Noise Cancellation Depth Adjust Mute Mute NLP Non Linear Processing Adjust Ncsel Noise Cancellation SelectNull Null the Telephone Line 255 Pacen PA Softclipper Enable PAA PA Adaptive ModePAENergy PA Energy-saver mode 256 Paeqset PA EQ Filter Set Paeqrst PA EQ Filter Reset257 Argument Type Size Palen PA Limiter Enable Paflt PA FaultPaimped PA Output Impedance Palt PA Limiter Threshold Pangen PA Noise Gate Enabled Pangat PA Noise Gate Activation TimerPangm PA Noise Gate Mode Pangf PA Noise Gate Filter 260 Pasmt PA Sound Mask Timer Pasmm PA Sound Mask ModePato PA Thermal Overload Phonebookadd Adds an Entry to the Phonebook 262 Prgstring Program String Ramp Ramp Gain AdjustmentPttthreshold Push to Talk Threshold Pushtotalk Push to Talk Reset Reset Refset Reference Channel Set UpRedial Redial the Last Number Ring Ring Indication 265 Ringon Ring Cadence On Time Ringoff Ring Cadence Off TimeRxboost Receive Boost 266 267 Sigtout Signal Generator Time Out Siggensweep Signal Generator SweepSlvl Speech Level Control Smtpsrv Smtp Mail Server Address 269 Sysresult System Check Result Syschecks System Checks270 271 Tamode Telco Adapt Mode 272 273 274 Xdelaysel Audio Delay Enable 275 Serial Command Support Table 276 277 278 279 Converge Pro 880 Port a Female DB-25 Control/Status Ports280 281 Converge Pro 880T Port a Female DB-25 282 Converge Pro 840T Port a Female DB-25 283 Converge Pro 8i Port a Female DB-25 284 Converge Pro TH20 Port a Female DB-25 285 Converge SR 1212 Port a Female DB-25 All Models Port B Female DB-25 All Models RS-232 Port286 287 Appendix C Firmware Loading Procedure 288 Converge Pro Control/Status Ports 289 290 Converge Pro 880T 291 292 Converge Pro 880TA 293 294 Converge Pro 840T 295 296 297 298 Converge Pro TH20 299 Converge SR 300 301 Converge SR 1212A 302 FCC Part 68 Compliance FCC Part 15/ICES-003 Compliance303 304 Electrical Safety Advisory 305 Safety 73/23/EEC Low Voltage Directive LVD IEC 60950-1Equipment 2003/11/EC & 2002/95/EC RoHS Compliance Directive 306 307 308 Safety 73/23/EEC Low Voltage Directive LVD 309 NEW Zealand Compliance 310 Glossary 311 312 313 314 315