ClearOne Converge Pro Manual
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ClearOne Converge Pro Manual

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Summary of Contents for ClearOne Converge Pro

  • Page 1 Converge Pro White Paper...
  • Page 3 ClearOne Communications, Inc. Printed in the United States of America. ClearOne Communications reserves specific privileges. Information in this document is subject to change without notice. Converge Pro Professional Conferencing Systems White Paper ClearOne Part Number 803-151-880 Rev 1.8. August 2009.

  • Page 5: Table Of Contents

    TAble Of CONTeNTS CHAPTeR 1: Introduction ..........1 Overview .......................1 Converge Pro 880 Product Description ............3 Converge Pro 880T Product Description ............4 Converge Pro 840T Product Description ............5 Converge Pro 8i Product Description ............6 Converge Pro TH20 Product Description ............7 Converge SR 1212 Product Description ............8 Converge Console Description ..............9...

  • Page 7: Chapter 1: Introduction

    The Converge Pro audio system is extremely flexible allowing it to be used in a wide range of applications, with superior audio quality. This is the result of combining ClearOne’s proprietary Distributed echo Cancellation and ClearOne’s advanced adaptive algorithms with powerful audio digital signal processing for automatic microphone mixing, signal routing, equalization, automatic level control, compression and other audio processing functions.
  • Page 8 • Increased distance (up to 200 feet) between each connected Converge Pro unit • fully configurable matrix which allows you to route any input to any output or combination of outputs •...
  • Page 9 CONverge PrO mixer LiNe - CHANNeL TAbLe Product mic/Line Line Power Processing Fader Output Telco e-bus inputs inputs Channels Channels Converge Pro 4 (35W) 880TA (New) Converge Pro 1 (5W) 880T Converge Pro Converge Pro Converge Pro 1 (5W) 840T...

  • Page 10: Converge Console Description

    Converge Pro units for your application. rapid system Configuration Console provides powerful Drag and Drop Configuration capabilities that allow you to quickly configure Converge Pro devices and perform advanced system configuration tasks. Av Devices AV Devices are pre-configured input or output channel settings that can be dragged from a menu of devices and dropped on to a channel to rapidly configure the channel.
  • Page 11 Macro Command list portion of the Macro Tab screen. Preset Objects Preset objects allow you to save preset configurations into the Database and reuse them. This enables you to instantly apply preset changes, and to rapidly configure additional Converge Pro units using drag and drop configuration. www.clearone.com...

  • Page 12: Controls And Connections

    CONTrOLs AND CONNeCTiONs The following diagrams describe front panel controls and back panel connectors. Front Panels Converge Pro 880 Front Panel ClearOne Converge 880 CONVERGE PRO 880 11: CONVERGE880-77 MENU SELECT IPA: 192.168.1.1 1.0.00 METER 1 2 3 4 5 6 7 8...
  • Page 13 Converge Pro 8i Front Panel ClearOne Converge 8i CONVERGE PRO 8i A6: CONVERGE8i-1C MENU SELECT IPA: 192.168.1.4 1.0.00 METER 1 2 3 4 5 6 7 8 -30 -10 -4 0 +4 +8 +12 Converge Pro TH20 Front Panel ClearOne...
  • Page 14 Panels Converge Pro 880 Rear Panel LINK IN VOLTAGE RANGE 100-240 VAC 2A MIC / LINE LINE OUT FREQUENCY 50Hz / 60Hz RS-232 CONTROL / STATUS LINE IN LINE OUT LINK OUT Converge Pro 880T Rear Panel Converge Pro 840T Rear Panel...

  • Page 15: Rear Panel Connectors

    : Two RJ-45 e-bus (expansion bus) connectors used to connect multiple units together to create a site. You can connect up to eight Converge Pro 880, 880T, 840T, 8i or Converge SR 1212 units, up to 16 Converge Pro TH20 units, or any combination thereof where the total number of microphone inputs does not exceed 64.
  • Page 16 12. speaker Conection: For external speaker (4Ω – 16Ω). An internal four channel, 35 watt per channel amplifier. 13. speaker Connection: for external speakers (70v or 100v system). An internal four channel, 35 watt per channel amplifier. NOTe: The Telco Set port is not available for use when the line is off-hook. www.clearone.com...

  • Page 17: Chapter 2: Echo And Noise Cancellation

    When far-end audio is picked up by the microphone (acoustic echo), the acoustic echo canceller adapts and eliminates the echo. Sample Audio from distant room Acoustic echo DIGITAL ECHO Microphone mixer CANCELLER Echo cancelled audio Figure 2.1 www.clearone.com...

  • Page 18: Noise Cancellation

    ClearOne’s Converge Pro systems feature a revolutionary new algorithm that actively eliminates background noise within the vocal range on each mic input. Unlike other noise cancelling devices, Converge Pro does not simply gate audio off when a mic input drops below a specified level. ClearOne’s noise cancellation actively separates and attenuates ambient noise from the speech signal, leaving speech audio virtually untouched.

  • Page 19: Chapter 3: Processing Blocks

    CHAPTeR 3: PROCeSSING blOCkS The Converge Pro 880 and 8i features the power of eight processing blocks, which are dedicated signal processing resources that can be applied to any mic or line input routed to it. The Converge 840T features four processing blocks.
  • Page 20 (the rate of attenuation outside their passbands). Crossovers in the Converge Pro are created by assigning the appropriate type of high-pass filter in a processing block with the complementary low-pass filter in a separate processing block.
  • Page 21 How ClearOne’s Dynamic Automatic resonance eliminator is better first, the DARe™ feedback eliminator uses proprietary adaptive algorithms that have evolved from ClearOne’s years of experience and expertise in echo cancellation technology. These algorithms eliminate feedback by rapidly identifying a feedback node and then placing a narrow-band filter at that frequency.

  • Page 22: Chapter 4: Inputs And Outputs

    Phoenix connector. Mic or line level is selected and phantom power is provided (if required). Converge Pro devices convert input audio from analog to digital for processing by the DSP engine. Once converted to digital, audio level is controlled.

  • Page 23: Line Inputs

    Activation of NOM places this output in a mode where, as more microphones routed to this output are gated on (either by auto gate or manual gate), the total overall output gain will remain constant. This reduces feedback. Input Gain Outputs From Matrix Mute 1-12 On Off On Off Figure 4.3 www.clearone.com...

  • Page 24: Chapter 5: Automatic Mic Mixing

    • keep microphones close to the participants • Activate only those microphones where voice audio is present • Use directional microphones • Acoustically treat the room to reduce reverberation and noise • eliminate or reduce the source of noise www.clearone.com...

  • Page 25: Microphone Parameters And Modes

    Typically, an automixer would activate at least one microphone, as if that audio were a voice in the room. This false activation will not occur with Converge Pro (see figure 5.2) because the unit can identify loudspeaker audio.
  • Page 26 This ambient level is then used in conjunction with the gate threshold to determine whether or not the mic should turn on. Level Microphone On Microphone Audio Microphone Off Microphone turns on when microphone Hold level goes above the Gate Ratio Time Gate Ratio Ambient Level Time Figure 5.4 www.clearone.com...
  • Page 27 0 to -80db Sets the ambient audio level when the Manual Ambient level adaptive ambient mode is off. Maintains constant gain of a selected NOM/Constant Gain On/off output. As more mics gate on, each mic mode is appropriately attenuated. Figure 5.5 www.clearone.com...

  • Page 28: Chapter 6: Audio Routing

    Converge Pro device functions, all routing is executed in the digital domain. The Converge Pro audio matrix mixes, distributes and routes audio from any input to any output with level control at each cross point. The routing chart below (figure 6.1) shows the default Converge Pro routing.

  • Page 29: Expansion Bus

    Audio on any linked Converge Pro unit can be placed on a bus channel, or taken off the bus and routed to any output of that unit. The Converge Pro system has 12 digital mix-minus buses with the following default programming.
  • Page 30 Faders There are four assignable fader channels in the Converge Pro 880/880T/8i/840T. faders are a way to “pre-mix” a number of input channels, process the “pre-mix”, and send it to an output. They are different from processing blocks in that they do not include filters, compression, limiting or delay.

  • Page 31: Chapter 7: System Control

    Presets can be executed in a variety of different ways including in Converge Console, the front panel of the Converge Pro unit, RS-232 external control devices, logic in/out, and contact closure, ethernet or the ClearOne Tabletop Controller. You can also create macros which can run multiple presets.

  • Page 32: Front Panel

    Converge Pro units can be password protected. expansion bus Audio Functions The expansion bus allows up to twelve Converge Pro mixers and up to 16 Converge Pro TH20s to be controlled as a single unit. This digital mix-minus bus allows audio routing to and from any destination on the expansion bus. It contains 18 independent digital audio buses and six PA Adapt/echo cancellation reference buses.
  • Page 33 Converge Pro comes standard with one expansion bus cable. The maximum cable distance allowed between any two Converge Pro units on an expansion bus network is 200 feet (60 meters). ClearOne recommends using category five twisted pair (10baseT) cable.

  • Page 35: Chapter 8: Applications

    In a typical distance learning application, the primary source of audio comes from the instructor’s wireless microphone. for phone-add capabilities, a telephone interface (such as the ClearOne Converge Pro TH20) would be used to transmit sound to distant sites. Secondary audio for presentation segments can be sourced from a VCR or CD player. In larger classroom settings, participants have desktop mics that enable everyone to hear questions and comments.

  • Page 36: Boardroom

    In this scenario, a Converge Pro TH20 is used for bringing in phone line audio and a video codec is used for video conferencing. The Converge Pro 880 allows you to integrate both simultaneously.

  • Page 39: Glossary

    This portion of the mixer monitors the varying ambient noise level in the room and changes the threshold level at which a microphone gates on. Ambient Level The manually-set background noise level upon which the Converge Pro 880/840T bases gating protocols. Used only if the Adaptive Ambient feature isn’t used. Ambient Noise The existing room-level noise, such as that caused by ventilation systems, paper shuffling, and background chatter.
  • Page 40 It is useful for matching the delay of two processing channels with different delays. Filter Display A group of nodes plotted on a logarithmic scale. The Converge Pro 880/840T filter display can be accessed through the Inputs 1–8/1–4, from Processing, or To Processing windows.
  • Page 41 A series of user-created instructions, stored within the unit, which can be executed from an RS-232 command or contact closure. macro mode The section of Converge Console that allows you to customize and execute macro commands for a Converge Pro unit or network. manual gating Provide the ability to gate a microphone on or off manually.
  • Page 42 An audio test signal containing all the frequencies in a given audio spectrum, with equal energy in each octave. Preset One of 32 configurable memories in a Converge Pro. A preset can be programmed with a variety of routing, level, gating, delay, filter, and equalizer settings to meet specific application requirements.

  • Page 43: Signal Generator

    Displays the numerical values of the filter parameters for all nodes of the active filter display. Threshold The upper or lower level at which a signal processing mechanism begins or terminates operation. White Noise Acoustical noise with equal energy throughout a given frequency range. www.clearone.com...
  • Page 44 ClearOne Communications, Inc. | 5225 Wiley Post Way, Suite 500, Salt lake City, UT, 84116 | www.clearone.com...
  • Page 45 Converge Pro 880T Overview The 880T leverages the rich functionality of the Converge Pro 880, and adds a built-in telephone interface and power amplifier for standalone conferencing applications. The 880T also provides industry-leading expansion capabilities, allowing you to connect it with other Converge/Converge Pro units for complex installations.
  • Page 46 AlC & AGC keep participants’ audio balanced and consistent Configuration Flexibility • Scalable – link multiple Converge Pro units (880, 840T, 8i, TH20) for extensive microphone coverage and up to 16 phone lines • enhanced expansion bus, featuring 12 mix-minus audio buses for routing between units •...
  • Page 47 AlC & AGC keep participants’ audio balanced and consistent Configuration Flexibility • Scalable – link multiple Converge Pro units (880, 840T, 8i, TH20) for extensive microphone coverage and up to 16 phone lines • enhanced expansion bus, featuring 12 mix-minus audio buses for routing between units •...
  • Page 48 Configuration Flexibility • Scalable – link multiple Converge Pro units (880, 840T, 8i, TH20) for extensive microphone coverage and up to 16 phone lines • enhanced expansion bus, featuring 12 mix-minus audio buses for routing between units •...

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