Limiter

The limiter restricts the input signal level by compressing its dynamic range above a specified threshold. The limiter is most commonly used to prevent clipping, protecting a system against component or speaker damage. While the limiter is closely related to the compressor, it applies a much higher compression ratio of ∞:1. The ratio is fixed and cannot be changed.

Threshold — The input signal level above which limiting begins (subject to attack time) and below which compression stops (subject to hold and release time). Threshold level can be adjusted from -80.0 to 0.0 dB in 0.1 dB increments.

Default is -10.0 dB.

Attack Time — Adjusts the time delay for limiting to engage after the input signal level reaches or exceeds the threshold level. Attack time can be adjusted from 0.0 to 200.0 ms in 0.1 ms increments.

Default is 2.0 ms.

Release Time — Adjusts the time it takes to return the signal to normal (unprocessed) levels after the signal no longer exceeds the Threshold level setting. Release time begins only after hold time is reached. Release time can be adjusted from 10 to 1000.0 ms in

0.1ms increments. Default is 50.0 ms.

Soft Knee — Click the Soft Knee check box to smooth and soften the transition from uncompressed to compressed output levels. There are no adjustments.

Ducking

Ducking provides a means to duck, or lower the level of one or more input signal targets when a specified source must take precedence. Ducking lasts for the duration of the ducking source signal (plus hold and release time) and restores the duck targets original level once the ducking source signal has ceased.

Ducking may be useful when:

•Program material needs to attenuate in order to accentuate the voice of a narrator,

•One microphone is used by a chairman or master of ceremonies, and needs to have priority over other mics, program material, or both, or

•A paging mic must attenuate all other signals.

Ducking processor blocks are individually inserted from a context menu, as shown in the following figure. Only a ducking source needs to be inserted. Ducking targets are enabled from the Ducker Configuration dialog box.

DMP 44 LC • Operation

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Extron electronic DMP 44 LC manual Limiter, Ducking
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DMP 44 LC specifications

The Extron DMP 44 LC is a powerful digital audio processor designed to cater to a wide range of audio distribution and mixing applications. It combines advanced audio processing capabilities with intuitive controls, making it an ideal solution for classrooms, conference rooms, and other professional audio environments. The DMP 44 LC features four inputs and four outputs, which provide incredible flexibility for any audio setup.

One of the standout features of the DMP 44 LC is its comprehensive DSP capabilities. The device incorporates Extron's renowned DSP technology, which offers extensive signal processing functionality including automatic mixing, gain sharing, EQ, delay, and filtering. These tools allow users to optimize audio performance, ensuring that sound quality is consistent and clear across all speakers and microphones.

In terms of connectivity, the DMP 44 LC offers a versatile array of input and output options. It includes balanced, low-impedance microphone and line level inputs, ensuring compatibility with a wide variety of audio sources. Outputs are also balanced, allowing for seamless integration with professional audio systems. The unit’s input and output configuration can be easily customized, accommodating different audio formats and setups.

The DMP 44 LC utilizes Extron’s patented ProDSP technology, which delivers precise signal processing capabilities without sacrificing audio quality. This technology supports high-resolution audio processing, enabling users to achieve the best sound reproduction possible. Moreover, the device allows for remote control and monitoring via an intuitive web-based interface, making it easy to manage audio settings from any location.

Another key characteristic of the DMP 44 LC is its robust design tailored for professional use. The compact form factor can be easily integrated into various environments, whether mounted in a rack or placed on a shelf. Additionally, its enhanced thermal management and sturdy construction ensure reliability and durability in demanding applications.

The DMP 44 LC embodies the latest advancements in audio technology, making it a reliable choice for professionals seeking high-quality sound management. With its extensive features, the digital audio processor allows for seamless audio mixing and processing, ensuring optimal performance in any audiovisual setup.
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