MU-0808 8×8 Digital Audio Matrix

The FHBAVTEC MU-0808 8×8 Digital Audio Matrix is an enterprise‑grade 8×8 Digital Audio Matrix Processor engineered for complex signal routing, precision mixing, and advanced dynamic processing in professional AV environments. Powered by an industry‑standard ADI SHARC 21489 DSP engine operating at 450 MHz SIMD, the MU‑0808 delivers ultra‑low latency audio execution and pristine sound fidelity across corporate boardrooms, higher education auditoriums, government facilities, and multi‑function event spaces.

Encased in a compact 1U rack‑mount steel chassis, the MU‑0808 unifies essential audio DSP algorithms—including Acoustic Echo Cancellation (AEC), Adaptive Feedback Suppression (AFC), Active Noise Control (ANC), Gain‑Sharing Auto‑Mixing, Parametric/Graphic EQ, Dynamic Compression, and Matrix Routing. With multi‑protocol control interfaces including Ethernet (TCP/IP), RS232, RS485, and customizable GPIO logic ports, the MU‑0808 provides seamless integration capability for modern AV systems.

Key Features

• 8 Analog Inputs & 8 Analog Outputs: Balanced Phoenix block terminal connectors supporting line/mic signals with individual gain control.

• ADI SHARC 21489 DSP Architecture: High‑performance 450 MHz SIMD floating‑point processor handling intensive real‑time audio algorithms.

• Pro‑Audio Resolution: 24‑bit / 48 kHz digital sampling rate delivering transparent audio conversion and dynamic range.

• Acoustic Echo Cancellation (AEC): Hardware‑accelerated AEC algorithm eliminates acoustic feedback and far‑end voice echoes during remote video conferences.

• Automatic Feedback Control (AFC): Dynamic notch‑filtering algorithm identifies and suppresses acoustic feedback (howling) in real time.

• Active Noise Control (ANC) & Auto Mixing: Background noise reduction paired with gain‑sharing auto‑mixing for multi‑microphone management.

• Comprehensive EQ & Dynamics: Multi‑band Parametric EQ (PEQ), Graphic EQ, High‑Pass/Low‑Pass filters, Expander, Compressor, Limiter, and Dynamic Noise Gate.

• Matrix Routing & Channel Delay: Arbitrary signal assignment and mixing across 8×8 cross‑points with up to 1,200 ms adjustable delay per channel.

• USB Audio Class Interface: Driverless 1‑in/1‑out USB audio interface for seamless integration with soft‑codec platforms (Zoom, Microsoft Teams, Webex).

• Configurable GPIO Integration: 8 programmable General Purpose Input/Output ports for switch logic, scene recalls, and emergency mutes.

• Flexible System Control: Bi‑directional command support via Ethernet, RS232, and RS485 for third‑party control systems and camera tracking automation.

• 1U Rack Enclosure: Standard 19‑inch 1U rack‑mountable design for seamless rack deployment.

DSP Core Processing

The MU-0808 8×8 Digital Audio Matrix provides an intuitive and flexible DSP matrix architecture that allows systems integrators to customize signal processing chains according to specific venue acoustic requirements:

• AEC (Acoustic Echo Cancellation): High‑efficiency echo cancellation optimized for full‑duplex interactive conferencing, preventing far‑end speaker feedback.

• AFC (Adaptive Feedback Suppression): Real‑time feedback detection and adaptive notch frequency filtering to maintain maximum system gain‑before‑feedback.

• Auto Mixer (Gain‑Sharing Algorithm): Automatically balances gain across multiple active microphone channels to maintain steady system gain and speech intelligibility.

• Equalization Suite: Independent multi‑band PEQ, Graphic EQ, High‑Pass, Low‑Pass, and All‑Pass filters for precise speaker tuning and room correction.

• Dynamics Suite: Input/Output Expanders, Compressors, Limiters, Dynamic Range Controllers, and Noise Gates for headroom management.

• Matrix Routing & Alignment: Cross‑point assignment with phase control, gain trim, and digital delay alignment up to 1,200 ms per output line.

Control & System Integration

Engineered for professional AV system designs, the MU-0808 8×8 Digital Audio Matrix offers robust connectivity and management options:

• PC Control Software: Dedicated Windows GUI software allows real‑time visual configuration of DSP chains, routing matrices, EQ response curves, and GPIO mappings over TCP/IP.

• Centralized Automation: Open serial protocol via RS232/RS485 for integration with Crestron, AMX, Extron, and other control processors.

• Camera Tracking Integration: Direct serial command output to trigger PTZ camera presets based on active microphone gate activity.

• GPIO Logic Control: 8 multi‑function logic ports configurable for external contact closures, physical volume potentiometers, LED indicators, or fire alarm emergency overrides.

Target Applications

• Corporate Boardrooms & Conference Centers: High‑definition speech reinforcement and echo‑free video conferencing.

• Higher Education & Lecture Halls: Multi‑microphone auto‑mixing, camera tracking trigger, and room matrix distribution.

• Government & Command Centers: High‑reliability audio processing with physical GPIO emergency overrides.

• Multi‑Function Auditoriums & Event Spaces: Dynamic sound distribution and zone delay alignment.

• Commercial AV Systems: Multi‑zone background music distribution and paging matrix systems.

Technical Specifications

Frequently Asked Questions

Q1: Does the FHBAVTEC MU‑0808 support echo cancellation for soft‑codec video conferencing platforms like Zoom or Microsoft Teams?

Answer: Yes. The MU-0808 8×8 Digital Audio Matrix features dedicated hardware‑based Acoustic Echo Cancellation (AEC) and an integrated 1‑in/1‑out USB audio interface. By connecting the MU‑0808 to a conference room PC via USB, the processor supplies processed, echo‑free microphone signals directly to Zoom, Microsoft Teams, or Webex while eliminating far‑end speech echoes and local acoustic howling.

Q2: How is the MU‑0808 configured, and can it be integrated with third‑party AV control systems?

Answer: The MU‑0808 is configured using a Windows PC control software over Ethernet (TCP/IP), providing a visual interface for signal routing, EQ tuning, dynamic processing, and scene preset management. For third‑party integration, the unit features open RS232 and RS485 control protocols, allowing full control via Crestron, Extron, AMX, or PTZ camera tracking controllers.

Q3: What functions can be assigned to the 8 configurable GPIO ports?

Answer: The 8 GPIO logic ports can be independently programmed as digital inputs or outputs. Common integration use cases include connecting physical push buttons for scene preset recalls, interfacing with LED status indicators, triggering emergency system mutes via fire alarm contact closures, or connecting analog potentiometers for wall‑mounted zone volume control.

Q4: Does the MU‑0808 provide phantom power for condenser microphones, and how is gain adjusted?

Answer: Yes. All 8 analog inputs feature individually switchable +48V phantom power configurable through the control software, making it fully compatible with professional condenser and boundary microphones. Input preamp gain is adjustable from 0 to +48 dBu in the software to accommodate various microphone and line‑level sources.