Video Conference | Audio DSP | ATD404
ATD404 - 4-Channel Digital Signal Processor
DSP Processor
ATD404
4-channel DSP with 48V phantom power, AEC/AFC/ANS/AGC algorithms, USB audio, and Ethernet control — designed for flexible classroom and conference audio processing.
Product Description
The ATVI ATD404 is a versatile digital signal processor built on A-DSP architecture with 40-bit floating point processing, up to 400MIPS capacity, and 1600MFLOPS performance. With four fixed analog inputs, four analog outputs, and a built-in USB audio channel, it provides complete signal processing for classrooms, conference rooms, and lecture halls in a 1U rack-mountable design.
Four balanced analog inputs with 48V phantom power (10mA max) support ceiling microphones and condenser mics, while four balanced analog outputs allow flexible routing. The built-in USB audio channel connects directly to a PC, with full compatibility with MS Teams, Google Meet, and Zoom without additional audio hardware.
Core DSP algorithms — AEC, AFC, ANS, and AGC — apply to both the analog inputs and the USB channel. Signal processing is fully customisable via the PC-based DSP control software, multiple ATD404 units can be configured from a single computer, and control is via a dedicated Ethernet port with 16 onboard presets for instant recall.
Key Features
4 Analog Inputs
Balanced inputs with 48V phantom power (10mA max) for ceiling mics, condenser mics, and wireless receivers.
4 Analog Outputs
Balanced outputs for flexible routing to amplifiers, recorders, or additional processing equipment.
DSP Algorithms
Onboard AEC, AFC, ANS, and AGC across all input channels.
USB Audio Channel
Plug-and-play PC connection for MS Teams, Google Meet, and Zoom with no extra audio interface.
Ethernet Control
Dedicated Ethernet port for remote configuration, with multiple units managed from one PC.
16 Preset Recall
Switch instantly between teaching, conferencing, and recording modes.
Multi-Unit Configuration
Configure and program multiple ATD404 units simultaneously for multi-room installations.
High-Performance DSP
A-DSP, 40-bit floating point, up to 400MIPS and 1600MFLOPS, with latency under 3ms.
Universal Power Supply
20W internal universal supply, CE/FCC/RoHS certified, in a 1U (482×200×45mm) chassis.
Ideal For
Classroom Audio
48V phantom power for ceiling microphones and wireless receivers
Video Conferencing
USB audio for MS Teams, Google Meet, and Zoom
Lecture Halls
AEC and feedback suppression for flexible mic and speaker placement
AV System Integration
Ethernet control with 16-preset recall for instant scene switching
Technical Specifications
| Audio Inputs & Outputs | |
|---|---|
| Analog Inputs | 4 (Balanced, 48V Phantom Power) |
| Analog Outputs | 4 (Balanced) |
| USB Audio Channel | Built-in (USB 2×2) |
| Phantom Power | 48V @ 10mA max per input |
| Input Gain Range | 0 ~ 48dB (6dB steps) |
| Maximum Input Level | +18 dBu |
| Maximum Output Level | +18 dBu |
| Input Impedance | 5.4 kΩ (Balanced) |
| Output Impedance | 600 Ω (Balanced) |
| DSP Processing | |
| Frequency Response | ±0.5 dBu (20Hz ~ 20kHz) |
| THD+N | 0.002% @ 4dBu |
| Input Dynamic Range | 110 dB |
| Output Dynamic Range | 110 dB |
| Sampling Rate | 48kHz |
| Audio Format | 24-bit (A/D – D/A Converter) |
| Latency | < 3ms |
| DSP Algorithms | AEC, AFC (Feedback Cancellation), ANS, AGC |
| DSP Architecture | A-DSP, 40-bit Floating Point |
| Processing Capacity | 400MIPS / 1600MFLOPS |
| Control & Interface | |
| Control Interface | Ethernet (dedicated port) |
| Serial Port | RS232 |
| Onboard Presets | 16 |
| DSP Control Software | PC-based, multi-unit configuration |
| Conferencing Platforms | MS Teams, Google Meet, Zoom compatible |
| Certification | CE, FCC, RoHS |
| General | |
| Dimensions | 482 × 200 × 45mm (1U Rack) |
| Power Consumption | 20W |
| Power Supply | Internal Universal |
| Weight | 2.5 kg |
| Operating Temp. | 0°C ~ 40°C |
| Humidity | 10% ~ 90% RH (non-condensing) |
| Mounting | 1U Rack Mountable, 19" Standard |
