AXP 50 C AT

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Input Channel Expansion with Processing for Extron DMP 128 Audio Systems A Five mic/line level inputs with 48 volt phantom power A Independent AEC - acoustic echo cancellation on each channel A FlexInput capability on each input to select between analog or Dante inputs A Built-in four-port Gigabit Ethernet switch A One digital input and dual digital outputs at each mic/line input for control A ProDSP audio signal processing: – 64-bit floating point digital signal processing engine – Fixed, low latency DSP processing AXP 50 C AT AUDIO FIVE INPUT AUDIO EXPANSION PROCESSOR WITH AEC AND DANTE

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  • Input Channel Expansion with Processing for Extron

    DMP 128 Audio Systems

    A Five mic/line level inputs with 48volt phantom power

    A Independent AEC- acoustic echo cancellation on each channel

    A FlexInput capability on each input to select between analog or Dante inputs

    A Built-in four-port Gigabit Ethernet switch

    A One digital input and dual digital outputs at each mic/line input for control

    A ProDSP audio signal processing: 64-bit floating point digital signal

    processing engine

    Fixed, low latency DSP processing

    AXP 50 C AT

    AUDIO

    FIVE INPUT AUDIO EXPANSION PROCESSOR WITH AEC AND DANTE

  • Introduction

    The Extron AXP50CAT is a five input audio expansion processor

    with Extron ProDSP for integrating remote microphones and other

    sources onto a Dante-enabled Extron DMP128 audio system.

    A single Ethernet cable from one AXP 50 C AT, or several linked

    units, to a central equipment rack significantly reduces the effort

    and expense of pulling one cable for each mic. The AXP 50 C

    AT provides 48 volt phantom power and a digital control port to

    all mic/line inputs. Dedicated signal processing is available for

    each input, including gain, filtering, dynamics, and AEC- acoustic

    echo cancellation. FlexInputs offer the additional capability to

    process a Dante channel in place of a local input. The intuitive

    DSPConfigurator Software makes it quick and easy to set up DSP

    parameters and AEC on the AXP50CAT.

    Remote Input Expansion With Processing

    The AXP 50 C AT accepts five channels of analog balanced or

    unbalanced audio, and digitizes them at 24-bit/48 kHz for output

    via Dante. When compared to a conventional input expander or

    break-in box, the AXP 50 C AT is truly unique in that it incorporates

    DSP and AEC for each input channel. This makes it much simpler

    and less expensive to expand input capacity by avoiding the need

    to install a remote break-in box plus additional DSP hardware at the

    central rack, which may otherwise be underutilized.

    A sound system designer can incorporate several AXP 50 C AT

    expansion processors to create a large mixing matrix with up to

    56 remote inputs per DMP 128 AT. Each AXP 50 C AT is connected

    over Ethernet using standard IP networking protocols. This greatly

    simplifies scalability and the audio cabling infrastructure. Utilizing the

    Dante network also avoids a long analog mic cable run for each mic

    channel and the possibility of introducing noise into the system. For

    further convenience, multiple AXP 50 C AT and DMP 128 AT units

    can be networked over their integrated four-port Gigabit switches.

    FlexInput Channels

    Each input on the AXP 50 C AT offers the capability to route a Dante

    channel in place of a local mic/line input. The flexible input selection

    enables the AXP50CAT to process audio from remote wireless

    microphones, wallplates, and other sources from anywhere on the

    Dante network.

    Acoustic Echo Cancellation at the Source

    The AXP50CAT includes five independent channels of Extron AEC

    for conferencing applications. An AEC reference signal is provided

    over the Dante network by a DMP128C AT. AEC is essential

    for effective room-to-room conversations, ensuring clear, natural

    communication for all participants. Each AEC processor in the

    AXP 50 C AT includes selectable noise cancellation. Extron AEC

    features advanced algorithms that deliver fast echo canceler

    convergence for optimal intelligibility, even in challenging conditions.

    Flexible Input Signal Routing

    The internal DSP architecture of the AXP 50 C AT sends both

    pre- and post-processing input feeds onto the Dante network. This

    provides the flexibility to provision signals for specific applications.

    Limiting the signal processing on input signals is desirable for

    recording or assistive listening, while dynamics is often used for

    microphones in voice reinforcement applications. For conferencing

    applications, AEC processing, together with dynamics and EQ are

    an absolute necessity to ensure optimal audio quality to the far end.

    To optimize the microphone inputs for the environment, such as

    applying low frequency roll-off to attenuate breath and wind noise,

    the Filter blocks are situated prior to the pre-processing outputs.

    Control

    Control and configuration are conveniently available via the built-in

    four-port Gigabit switch. Any port can be designated for control only.

    The AXP 50 C AT includes digital I/O ports for each input, which

    allow for external triggering such as mic activation and muting, and

    illuminating mic status LEDs.

    The AXP 50 C AT is housed in a compact 1U, half rack width enclosure that can be installed underneath a conference table, inside a credenza, or anywhere microphones or other sources may be situated using the optional Extron UTS Series or MBU 123 mounting hardware.

  • Features

    Momentary SwitchGreen LED(un-mute)

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    ProDSP

    The AXP50CAT features Extron

    ProDSP, a powerful digital signal

    processing platform based on a 64-bit floating point DSP engine.

    ProDSP provides an extensive array of digital processing tools

    for audio system design, configuration, and optimization. The

    DSPConfigurator Software is the user interface to ProDSP for full

    control and management of the AXP50CAT and all of its DSP

    functions, including level control, AEC, filters, and dynamics.

    Highest Quality Converters Plus Floating Point DSP

    The AXP50CAT features studio grade ADCs - analog-to-digital

    converters using professional quality 24-bit resolution and 48kHz

    sampling, fully preserving the integrity of the original audio signal.

    The processing power of the 64-bit floating point DSP engine allows

    for simultaneous audio processing algorithms within the same

    channel, and across multiple channels, without compromising sound

    quality. Throughput latency the normal delay of audio signals

    due to audio processing is deterministic, with overall latency very

    low regardless of the number of channels and processes, so that

    audio is kept in sync with the video. This powerful DSP engine

    also delivers very wide dynamic range to prevent clipping and fully

    maintain signal quality.

    Fixed Yet Flexible DSP Architecture

    The DSPConfigurator Software features a fixed layout of DSP

    processing blocks for each input. Each block in the Graphical User

    Environment represents a Gain, Dynamics, Filter, or AEC algorithm

    within the DSP engine. While this architecture is fixed, each block

    offers flexible options and customizable parameters. For example,

    the Filter block contains several selectable filters, each of which can

    be customized as parametric EQ, low pass, high pass, or bass or

    treble shelving. Each processing block can be selectively bypassed.

    Emulate and Live Modes

    The DSPConfigurator Software features an Emulate mode, which

    allows for complete audio system design while working offline on

    a PC. When connected to the AXP50CAT, Live mode enables

    real-time control of all settings, file updates, and archiving, plus

    active metering of all input channels. In Live mode, integrators can

    push all or part of a configuration to the AXP50CAT from the

    PC, while preserving the existing file. Emulate and Live modes give

    audio system designers the flexibility to create an entire project from

    their PC in advance of installation, and then, once they are on-site,

    use the same software to provide accurate system setup and final

    optimization.

    Device Manager

    Device Manager in the DSP Configurator Software enables easy

    configuration of multiple Extron DSP products, including networked

    AXP 50 C AT or DMP 128 processors, by toggling between

    Graphical User Environments for each unit. Processors can be

    grouped into folders for organizing as separate rooms or buildings.

    Settings for multiple Extron DSP products in Device Manager can be

    saved to a single file.

    Digital Port with Dual Outputs

    The AXP 50 C AT provides digital input, ground, and dual

    digital outputs at each mic/line input for convenient microphone

    interfacing. This allows button-triggered mic activation and muting,

    as well as dual mic LED tally back, and is ideal for integration of

    conference microphones that have dual status LEDs.

  • Key Features

    INPUT EXPANSION USING DANTE

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    DMP 128 C AT

    ExtronAXP 50 C ATAudio Expansion Processor

    Table Microphone with Mute and Light Control

    Digital I/O Control

    Extron DMP 128 C AT Digital Matrix Processor

    Dante technology from Audinate provides digital audio distribution over standard local area

    networks. Dante allows high resolution audio channels to be transported uncompressed

    across a switched Ethernet data network using standard TCP/IP protocols, while meeting

    the stringent quality requirements of professional audio. Dante was built on the IEEE

    1588 Time Precision Protocol standard to derive a precise clocking mechanism for

    synchronization. As a result of this, latency of 1 ms is maintained across 10 network switch

    hops using Dante in a Gigabit Ethernet network, even when using existing Ethernet switch

    technology. Digital audio signals are converted to packets at the edge of the network,

    then processed and transported to other Dante-enabled devices.

    A network with Dante enabled devices can be shared with ordinary data traffic such as e-mail. Audio channels

    can be transported as unicast or multicast to make the most efficient use of available bandwidth.

    With Dante, AXP50CAT and DMP 128 AT processors can share multiple channels of high resolution digital audio with each other over

    a local area network. They can be directly linked using their built-in four-port Gigabit Ethernet switches or by connecting into a network

    infrastructure. Dante technology distributes up to 512x512 audio channels at 24-bit/48 kHz over a single Gigabit Ethernet link with extremely

    low latency. Both Dante and the AXP 50 C AT processors four-port switch are AVB - Audio Video Bridging ready.

    DANTE TECHNOLOGY OVERVIEW

    The AXP 50 C AT is a true system expander for a DMP 128 AT, with capability beyond a simple break-in box or digital snake. The built-in DSP

    processing, coupled with the capabilities and flexibility of Dante networking, create a powerful distributed approach to adding microphones to

    a system. Traditionally, expanding a system with break-in boxes or digital snakes requires that each channel be matched with DSP at the rack.

    This often necessitates the addition of one or more processors to the system, with only partial utilization of their I/O and DSP capacity. The

    AXP 50 C AT greatly reduces equipment, cabling, and installation costs by allowing integrators to remotely locate and process microphone

    and program channels, insert them onto the Dante network, and receive them as expansion inputs to one or more DMP 128 AT processors.

  • The DSP Configurator Software simplifies AEC and noise cancellation setup with a user-friendly interface that provides real-time metering for

    ERL - echo return loss, ERLE - echo return loss enhancement, and TER - total echo reduction levels. Guided alerts appear whenever ERL is

    outside of the optimal range for echo cancellation. Optional settings include fine adjustments for NLP - non-linear processing to maximize

    AEC performance in acoustic environments with significant sonic reflections or reverberation.

    In conferencing applications, hearing the talkers voice returned as an echo is disruptive to natural communication. AEC processing prevents

    far end audio, as reproduced in the near end, from being returned back to the remote talker as echo, ensuring clear, natural conversations.

    However, AEC processing can be challenged by conditions such as double-talk, when talkers from both ends are speaking simultaneously,

    and when near end talkers use wireless microphones. Extron AEC delivers fast echo cancelling optimized for these challenging conditions.

    ACOUSTIC ECHO CANCELLATION

    Selecting the AEC ReferenceAudio from the far end is reproduced by near end loudspeakers so that listeners can

    hear the far end talkers. However, this audio can return to the far end via the near end

    mics, DSP, and codec. To prevent this, AEC processing in the near end analyzes two

    important signals, the far end audio coming from the conferencing codec or phone

    input also known as the AEC reference, and the same audio after being played over

    the near end speakers into the acoustic space and picked up by the mics. These two

    signals are analyzed in order to create and apply an adaptive filter to cancel out the far

    end audio captured at the mic.

    The AXP 50 C AT provides the flexibility to use the AEC reference signal from any

    DMP 128 AT processor over the Dante network. The AEC reference can be independently

    routed to each of the five channels of AEC processing.

    AEC Dialog Close-UpAn AEC reference can be individually routed to each of the five independent AEC processors of the AXP 50 C AT.

  • DSP Configurator

    Intuitive Graphical User Environment The DSP Configurator Software features a Graphical User Environment that offers a clear view of all inputs and audio processing blocks in a single window. This allows a designer or installer to quickly view the entire configuration without having to access multiple windows or menus.

    Extron ProDSP includes all the essential DSP tools needed to set up and fine-tune audio systems. These tools, or processing blocks, allow

    for control and management of gain, dynamics, filtering, AEC, and more. Extron digital audio processors serve as the central point for sound

    system setup and optimization. This can simplify system designs and save money by eliminating more complicated DSP equipment. This

    easy-to-use configuration approach saves time during system tuning.

    For the AXP 50 C AT, Gain, Filter, Dynamics, and AEC blocks are available for each input. Selecting any of these blocks opens a dedicated

    pop-up window with a range of options and customizable parameters. Multiple windows can be open at the same time. Input levels can be

    monitored at any time by simply opening any of the pre-processing Gain windows, or the convenient meter bridge.

    To further expedite configuration, Extron Building Blocks can be applied to any of the inputs. Each Building Block includes gain and processor

    settings optimized for a specific type of input device, such as microphones, with preset levels, filters, dynamics, and more. Building Blocks can

    also be customized and saved, or created by capturing the current gain and processor settings for an input.

    EASY-TO-USE DSP CONFIGURATOR SOFTWARE FOR FAST SETUP

    AEC 5 independent acoustic echo cancellers with selectable noise reduction

    GAIN STAGES 2 gain stages across input paths

    DYNAMICS AGC - Automatic Gain ControlCompressorLimiterNoise gate

    FILTERS

    5 filters per inputHigh passLow passBand passShelvingParametric EQ

    EXTENSIVE ARRAY OF DSP TOOLS

  • Distance Learning System Application

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    DMP 128 C AT

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    Table Microphone with Mute and Light Control

    Digital I/O Control

    ExtronAXP 50 C ATAudio Expansion Processor

    ExtronAXP 50 C ATAudio Expansion Processor

    Table Microphone with Mute and Light Control

    Digital I/O Control

    AUDIO

    PRIMARY

    REDUNDANT

    VIDEO

    I/O

    POWER

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    ENTER PRESET VIEW ESC

    INPUTS

    OUTPUTS

    1 2 3 4 5 6 7 8 9 10 11 12 14 15 1613

    1 2 3 4 5 6 7 8 9 10 11 12 14 15 1613

    XTP CROSSPOINT 1600XTP SERIES DIGITAL MATRIX SWITCHER

    CONFIG

    STANDBY/ON

    PQLS HDMI OPEN/CLOSE FL OFF

    USB

    PUSH PUSH

    POWER GUIDE MENU RES 480 480p 720p 1080i 1080p DIRECTV HD

    SELECT

    D I R E C T V

    DanteNetwork

    ExtronXPA 2001-70VPower Ampliers

    Extron SI 3CT LPFull-Range Speakers

    Extron DMP 128 C AT Digital Matrix Processor

    Wireless Microphones

    Blu-ray Player

    Satellite Receiver

    ExtronXTP CrossPoint 1600 Modular Digital Matrix Switcher

    Cameras

    Video Conference Codec

    ExtronXTP R HDMILong Distance XTP Receiver for HDMI

    ExtronXTP R HDMILong Distance XTP Receiver for HDMI

    Projector

    Projector

    DISTANCE LEARNING ROOM

    Distance learning applications require a fully capable audio system to support conferencing. The audio system must deliver quality sound

    reinforcement, but more importantly, ensure that audio at the far end is absolutely clear and intelligible. The best way to accomplish this is to

    provide a tabletop microphone at every student location, paired with AEC in the DSP. Audio system designers can specify Extron AXP50CAT

    input expanders at designated locations throughout the room for connecting into microphones. Instead of running mic cables all the way back

    to the rack, each AXP50CAT connects into the main DMP 128 C AT by way of a Dante Ethernet link. Additionally, the compact enclosure of

    AXP 50 C AT allows inconspicuous placement underneath a table or desk with optional Extron mounting accessories.

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    UNITED STATES EUROPE ASIA MIDDLE EAST

    Worldwide Sales Ofces

    +800.633.9876Inside USA/Canada

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    +65.6383.4400

    +971.4.299.1800

    2014 Extron Electronics. All rights reserved. All trademarks mentioned are the property of their respective owners. Prices and specifications subject to change without notice.

    Specifications

    07-201468-2613-01 REV. A4Letter - English - NP

    AUDIO

    Frequency response 20 Hz to 20 kHz, 0.2 dBTHD + Noise 110 dB, 20 Hz to 20 kHz, at maximum output,

    unweightedCrosstalk 10k ohms unbalanced/balancedNominal level +4 dBu when level is set to 0 dB gain; adjustable from

    -60 dBu to +4 dBuMaximum level +21 dBu, balanced, when input gain is set to 0 dBEquivalent input noise 70 dB typicalMic phantom power +48 VDC, which can be switched on or offNOTE: 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV 2 dBu

    AUDIO PROCESSING

    D/A conversion 24 bit,48 kHz samplingAEC tail length >200 ms AEC convergence up to 60 dB/secNoise cancellation up to 20 dB, software selectable

    AT PORTS

    Transmission type Dante over TCP/IP; AVB readyConnectivity (4) RF-45 connectors, 4-port 1 Gbps switch to Dante

    interfaceInputs 5 channels Rx, AEC reference onlyOutputs 10 channels Tx, pre- and post-processingAudio format 24 bit, 48 kHz sampling, uncompressedLatency Deterministic, based on user selections: 0.25 ms, 1.0 ms

    (default), 5.0 ms

    CONTROL/REMOTE AUDIO PROCESSOR

    Ethernet host port 4 RJ-45 femaleEthernet data rate 100/1000Base-T, half/full duplex with autodetectEthernet default settings Link speed and duplex level = autodetected

    DHCP = onWeb server Up to 200 simultaneous sessions

    6.5 MB nonvolatile user memoryProgram control Extron DSP Configurator control/configuration program for

    Windows Extron Simple Instruction Set (SIS), Telnet

    GENERAL

    Power supply External Input: 100-240 VAC, 50-60 Hz Output: +12 VDC, 1 A

    Power consumptionDevice and power supply 12 wattsTemperature/humidity Storage: -40 to +158 F (-40 to +70 C) /

    10% to 90%, noncondensing Operating: +32 to +122 F (0 to +50 C) / 10% to 90%, noncondensing

    Cooling Convection, no ventsThermal dissipationDevice TBD BTU/hrDevice and power supply TBD BTU/hrMountingRack mount Yes, with optional 1U rack shelfFurniture mount Yes, with optional under-desk mounting kitEnclosure type MetalEnclosure dimensions 1.7 H x 8.75 W x 9.5 D (1U high, half rack wide)

    (4.3 cm H x22.2 cm W x24.1 cm D) (Depth excludes connectors.)

    Product weight 1.9 lbs (0.9 kg)Shipping weight 4 lbs (2 kg)Vibration ISTA 1A in carton (International Safe Transit Association)Regulatory complianceSafety CE, c-UL, ULEMI/EMC CE, C-tick, FCC Class A, ICES, VCCIEnvironmental Complies with the appropriate requirements of RoHS,

    WEEEWarranty 3 years parts and laborNOTE: All nominal levels are at 10%.

    Model Version Description Part numberAXP 50 C AT Audio Expansion Processor w/ AEC & Dante 60-1325-01DMP 128 AT 12x8 ProDSP Processor w/Dante 60-1211-10DMP 128 C AT 12x8 ProDSP Proc. w/AEC and Dante 60-1178-10DMP 128 C P AT 12x8 ProDSP Proc. w/AEC, POTS and Dante 60-1179-10

    For complete specifications, please go to www.extron.comSpecifications are subject to change without notice.