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Introduction
This section describes this manual and the DMP128, including:
• About This Manual
• About the DMP128 Digital Matrix Processor
• Features
About This Manual
This manual contains installation, configuration, and operating information for the
ExtronElectronicsDMP128ProDSP
™
Digital Matrix Processor, software controlled digital
audio processor.
In this manual, the DMP128 may also be referred to as “the mixer” or “device.”
About the DMP128 Digital Matrix Processor
The Extron DMP 128 Digital Matrix Processor is a 12x8 audio mixer featuring
ExtronProDSP, automixing, and I/O expansion capabilities, and is available with
AEC - acoustic echo cancellation. The DMP 128 offers a configuration approach to DSP in
order to simplify mixing, routing, conferencing, and room optimization. Quick and intuitive
configuration using the DSP Configurator™ Software allows the DMP 128 to be installed in
very little time, with easy-to-learn adjustments that can be heard in real-time. A digital audio
expansion port allows two DMP 128 units to be linked together to expand input and output
signal management and routing capabilities. The DMP 128 is ideal for presentation and
conferencing applications in boardrooms, courtrooms, and conference centers that require
advanced matrix mixing with DSP.
The DMP128 has no front panel controls. All configuration is performed using the
ExtronDSPConfigurator
™
program from a host computer via any of the communication
ports, RS-232, USB or Ethernet (high-speed ports recommended). Signal presence and clip
LEDs for the twelve input channels and eight output channels are on the front panel.
Features
• Two models with 12 mic/line inputs and 8 outputs:
• 12x8 ProDSP processor
• 12x8 ProDSP processor with AEC
• Inputs — Twelve balanced or unbalanced mic/line level on 3.5 mm, 3-pole and 6-pole
captive screw connectors
• Outputs — Eight balanced or unbalanced line level on 3.5 mm, 6-pole captive screw
connectors
• Eight channels of acoustic echo cancellation (AEC) — The DMP 128 C models
include eight independent channels of high performance AEC, as well as selectable
noise cancellation. Extron AEC features advanced algorithms that deliver fast echo
canceler convergence for optimal intelligibility in situations that challenge AEC
performance, including double-talk, and the use of wireless microphones at the near
end.
DMP128 • Introduction 1