Digital Audio Processor Instruction Manual

Introduction

Thank you for purchasing our products. Please read this manual to familiarize yourself with the products.

Note: This manual provides information relevant to all models in the same series. Due to configuration differences between models, the actual product you purchase may differ from the descriptions in this manual. Please refer to the actual product if any discrepancies arise.

01 / BRIEF INTRODUCTION

PRODUCT OVERVIEW

This is a high-performance digital DSP processor, supporting multiple analog signal routing. Users can connect the machine via USB or Intranet IP and other methods to control the upper computer. The PC software interface is simple and user-friendly, offering intuitive operation.

The CPU utilizes the ADSP-21571 digital audio processing chip from ADI Corporation. It features a dual-core SHARC+DSP processor based on the Arm Cortex-A5 high-performance floating-point core architecture, supporting 64-bit floating-point optimization FIR and IIR algorithms. The A/D section uses the AK5552 analog-to-digital conversion chip, supporting a 32-bit 768kHz sampling rate and differential filter circuit input design. This ensures high resolution and low noise for input signals, achieving a professional-grade 118dB signal-to-noise ratio, effectively minimizing background noise in the digital audio processing circuit.

COMPOSITION OF PRODUCT

A block diagram illustrates the product's composition:

Block Diagram: Inputs (IN A, IN B, IN C, IN D) connect to ADCs, which feed into a DSP. The DSP output goes to DACs, which then connect to Outputs (OUT-1 through OUT-8). A separate connection shows a Control PC linked via USB.

FUNCTIONAL CHARACTERISTICS

• Maximum support: 4 input, 8 output
• 15-segment parametric equalizer
• 31-segment graphic equalizer
• 5-segment dynamic equalizer
• 512-order FIR filter
• Includes: gain/phase/mute, channel level indication, delay, limiter, noise gate, channel routing, FIR filter, marshalling, channel replication, noise/signal generator.
• Supports RS232 serial port protocol for external control.
• Can be connected to PC host software via USB or RJ45 LAN for control.

CRITICAL SAFETY NOTE

CATALOGUE

01 Introduction

01 Critical safety note

01 Catalogue

02 Product overview

02 Composition of product

02 Product front introduction

03 Operation example

03 Function of the key

03 Level indicator

04 Product back introduction

04 Product wiring diagram example

05 Product PC connection debugging method

05 RJ45 Network port LAN connection method

05 RS232 central control connection legend

06 Central control protocol

06 Specification parameter

02 / PRODUCT FRONT INTRODUCTION

The front panel features various controls and indicators:

• Input Channels (1-4): Labeled A to D.
• Output Channels (5-12): Labeled 1 to 8.
• LCD screen (13): Displays operational information.
• ENTER Control knob (14): Used for parameter adjustment and selection.
• Buttons:
  • MATRIX (15)
  • XOVER (16)
  • GEQ/DEQ (17)
  • PRESET (18)
  • PEQ (19)
  • SETTING (20)
  • USB (21)
  • BACK (22)
  • DELAY (23)
  • GATE/COMP (24)

OPERATION EXAMPLE

A. Channel delay regulation: Press the [DELAY] button, select the corresponding channel (A~D or 1~8) on the left to enter the parameter adjustment screen, and use the [Enter] control knob to modify the parameter.

B. Modifying channel routing: Press the [MATRIX] button, select the corresponding channel (A~D or 1~8) on the left to enter the parameter adjustment interface. Press the control knob [Enter] under the selected channel to enter the editing state, and press the corresponding channel key to perform routing links.

C. Channel silence: Long press the [Channel key] on the main screen for 2 seconds. The silent indicator will light up, indicating the current channel is in the silent state.

D. Restore factory Settings: Connect the power cable. Hold down the [ENTER] + [BACK] keys on the panel, then power on the unit. Release the keys when "Factory Boot Loading...OK" appears on the screen.

FUNCTION OF THE KEY

Refer to the numbered controls on the front panel diagram:

• 1-4: Input channels (A to D)
• 5-12: Output channels (1 to 8)
• 13: LCD screen
• 14: ENTER Control knob
• 15: MATRIX
• 16: XOVER
• 17: GEQ/DEQ
• 18: PRESET
• 19: PEQ
• 20: SETTING
• 21: USB
• 22: BACK
• 23: DELAY
• 24: GATE/COMP

LEVEL INDICATOR

The front panel includes level indicators:

1. Channel mute indicator: [mute indicator]
2. Signal distortion indicator light: [distortion indicator]
3. Function trigger indication: Input channel [GATE], Output channel [COMP]
4. Signal level lamp: Indicates levels from -24dBu to +12dBu.

03 / LEVEL INDICATOR

This section is a duplicate of the Level Indicator subsection under "02 / PRODUCT FRONT INTRODUCTION". It is integrated there.

04 / PRODUCT BACK INTRODUCTION

The rear panel provides connection ports:

• 1. Electrical connection: AC 110V~220V power input.
• 2. Power switch: [power switch] to turn the unit on/off.
• 3. RJ45 connector: For network (LAN) connection.
• 4. RS232 connector: For central control system connection.
• 5. CHANNEL OUTPUT: Ports for connecting to output devices (labeled 1-8).
• 6. CHANNEL INPUT: Ports for connecting input sources (labeled A-D).

05 / PRODUCT WIRING DIAGRAM EXAMPLE

A typical wiring setup is illustrated:

Wiring Diagram: Shows connections from a Mixer to the Digital Audio Processor's inputs (A-D). The processor's outputs (1-8) connect to Power Amplifiers, which in turn drive Front Speakers, Rear Speakers, and a Subwoofer. A Central Control Host connects to the processor via RS232 and Network (RJ45) interfaces. Power is supplied via AC 110V-230V.

06 / PRODUCT PC CONNECTION DEBUGGING METHOD

Explanatory legend: Buttons on the front panel are shown: BACK, DELAY, GATE/COMP, MATRIX, GEQ/DEQ, PEQ, XOVER, PRESET, SET, USB.

Connection Method: Use a USB-B cable to connect the USB interface on the front panel of the product to the USB interface of a computer. Run the installed DSP upper computer software on the computer to connect and debug the machine.

RJ45 NETWORK PORT LAN CONNECTION METHOD

Explanatory legend: PC, Router, AC 110V-230V power, RJ45 connector, POWER, RS232, CE logo (♻️).

Connection Method:

1. Connect the machine to a PC or LAN router using a network cable via the RJ45 port on the back. After powering on, press the "SETTING" key to access the network information page to view the current IP address and device ID.
2. Run the DSP debugging software. Navigate to Settings > Network, enter the corresponding IP address and device ID, and click Settings. Return to the main interface and click the "Connect" button in the upper right corner to establish the connection.

Troubleshooting: If connection fails, check the network cable, router functionality, and the computer's NIC driver installation and configuration.

07 / RS232 CENTRAL CONTROL CONNECTION LEGEND

Explanatory legend: Shows connections between a PC, a Ch340 Module, and the RS232 port of the unit. Also shows AC 110V~230V power and CE logo (♻️).

CENTRAL CONTROL PROTOCOL

Port setting

Control item

Channel Codes

Protocol format

Protocol header (0xC5 0x66 0x36) + channel + control item + quantitative value

Example:

• Control input channel 1 volume plus: 0xC5 0x66 0x36 0x00 0x01 0x7F
• Control input channel 2 mute: 0xC5 0x66 0x36 0x01 0x02 0x7F
• Control output channel 1 delay minus: 0xC5 0x66 0x36 0x04 0x03 0x00

08 / SPECIFICATION PARAMETER