RL-DSP44D

FHB Audio 4CH Dante DSP with USB Sound Card

The FHB Audio RL-DSP44D is a versatile 4-channel Digital Signal Processor (DSP) equipped with a built-in two-in, two-out USB sound card . This makes it an all-in-one solution for professional audio environments, supporting high-quality music playback, recording, and seamless integration with soft video conferencing software such as ZOOM, Tencent Conference, and Dingding Conference .

Advanced Audio Processing

This device incorporates several advanced audio features to ensure crystal-clear sound . It includes two independent Acoustic Echo Cancellation (AEC) channels with a 512 ms delay time, a 60 dB/s convergence rate, and an echo suppression amplitude of 60 dB . Additionally, it features an independent feedback suppression (AFC) channel that uses a notch algorithm to increase the sound transmission gain by 10 dB. The unit’s Noise Suppression (ANS) technology further enhances audio clarity by increasing the signal-to-noise ratio by 18 dB .

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Category: Extender

Product Description

Comprehensive Control and Connectivity

For system integration and control, the DSP supports RS232, RS485, and UDP control protocols . These allow for the management of system power, signal switching, and environmental and sound control functions, enabling key-based operation of required system features . The device also provides customized management interfaces for end-users, with a single interface capable of managing up to 30 devices simultaneously .

Channel Specifications and Features

The RL-DSP44D is configured with four analog input channels, four analog output channels, and a 4×4 Dante channel matrix . It offers sophisticated audio customization through an eight- step parametric setting, which provides five distinct filter options: Parametric, Lowshelf, Highshelf, Lowpass, and Highpass-throughput .

Primary Applications

With its robust feature set, this Dante DSP is highly suitable for a wide range of professional audio installations . Its primary applications include large conference rooms, exhibition halls, multifunctional halls, gymnasiums, and other event spaces requiring high-performance audio processing and distribution .

Network Transmission Feature

Onemore important featureof this 1×4 HDMI Splitter Extenderisits ability to send HDMI signals over standard CAT5/5e/6 network cables, allowing a transmission distance of up to 120 meters between the transmitter and receiver units. This long‐distance transmission capability makes it highly suitable for large venues such as auditoriums, shopping malls, and multi‐room setups, where running long HDMI cables would be expensive or impractical, while still maintaining stable high‐definition video and audio quality on all connected displays.