Product Introduction

The Interactive Omnidirectional Audio Acquisition System is a USB-connected device that supports 2 wired ceiling microphones, local computers, active speakers, and video conferencing hosts. With simple connections, it enables remote voice interaction and meets the high-fidelity recording requirements for distance education and meetings.

Key Customer Benefits

Clear and Natural Sound Interaction Like Face-to-Face Communication:

The spherical ceiling microphone offers a maximum pickup radius of 10m with more precise sound capture, featuring 48KHz high-fidelity audio sampling rate. The Interactive Omnidirectional Audio Acquisition System is equipped with high signal-to-noise ratio (SNR), adaptive echo cancellation, adaptive noise suppression, adaptive voice gain adjustment, and intelligent mixing functions. With a maximum noise reduction level of 18dB, it supports A/D & D/A conversion and 24-bit high-resolution audio, delivering clearer and more natural sound quality.

In addition, the Interactive Omnidirectional Audio Acquisition System adopts bare-wire Phoenix terminal blocks and features 2-channel balanced outputs. Equipped with an adaptive algorithm, it allows users to select different functions via DIP switches, eliminating the need for complex software debugging and enabling plug-and-play functionality.

Features

High-Definition Sound Pickup Ceiling Microphone

High signal-to-noise ratio (SNR), wide frequency response, balanced sound, and high fidelity

Pickup radius up to 10 meters

3rd-Generation Voice Algorithm

24bit/48KHz sampling frequency

High-performance A/D & D/A converters

Adaptive echo cancellation

Adaptive noise suppression

Adaptive voice gain adjustment

Intelligent mixing

Efficient Deployment & Comprehensive Functions

Compatible with mainstream teaching hosts, recording & interactive hosts, video conferencing systems, etc.

Independent volume control knobs for input and output

Compatibility with Universal Audio-Video Software Platforms

Supports general educational and conference software platforms

Installation Steps

Connect the ceiling microphone, active speakers, and 12V power supply to the corresponding Phoenix terminals on the back of the audio processor in sequence, then connect via USB and launch the audio-video software.

Use the front-panel knobs to adjust the input/output levels of each functional module for optimal performance.

Use the DIP switches to configure different functions.

Product Parameters

Basic Information

color Matte Black

Power Power Adapter; Input: 100-240V, 0.5A, 50/60Hz; Output: DC 12V, 2A

Connection Type-B USB Port; DC 12V Power Port; 2-channel 3.81mm Phoenix Terminal Blocks

Packing List 1 x Main Unit, 2 x Spherical Omnidirectional Microphones, 2 x Spherical Omnidirectional Microphone Connection Cables, 1 x Speaker-Specific Connection Cable, 1 x Red-White RCA to Phoenix Terminal Adapter, 2 x 3.5mm Audio to Phoenix Terminal Adapters, 1 x Type-B USB Cable, Phoenix Terminals, 1 x Power Adapter, 1 x User Manual

Audio Characteristics Adaptive Echo Cancellation; Adaptive Noise Suppression; Adaptive Gain Adjustment; Intelligent Mixing

Environmental Specifications Emperature: 20°C～70°C; Humidity: 20%～90% (non-condensing); Storage Temperature: 20°C～70°C; Noise Level: < 48dB

Main Unit Configuration

Ceiling-Mounted 

Spherical Microphone Pickup Radius: 10m max

Sensor Type: Φ25 Back Electret Condenser Cartridge

Circuit Characteristics: JFET Impedance Conversion

Electronic Balancing

Polar Pattern: Unidirectional Supercardioid

Frequency Response: 50Hz-20KHz

Sensitivity: -47±3dB

(Drain Test: 1.5V 2.2KΩ)

Rated Output Impedance: 2.2KΩ

Minimum Load Impedance: 1000Ω

Signal-to-Noise Ratio (SNR): 75dB

Maximum Sound Pressure Level (SPL): 115dB

Maximum Output Level: 1.6dBV (1.2V)

Output Connector: Mini XLR-3 Male

Cable: Twisted Shielded Microphone Cable

Audio Processor Frequency Response (20Hz-20kHz @ +4dBu)

Microphone Channel: +0/-2dB

Line Input Channel: +0/-0.5dB

THD+N (Total Harmonic Distortion + Noise)

Microphone Channel: < 0.009%

Line Input Channel: < 0.007%

Equivalent Noise: < -84dBu

Dynamic Range: > 105dB

Maximum Input Level

Microphone Channel: -2dBu

Line Input Channel: 20dBu

Maximum Output Level (Balanced): 20dBu

Maximum Gain

Microphone Channel: 50dB

Line Input Channel: 0dB

Input Impedance

Microphone Channel: 330Ω

Line Input Channel: 20kΩ

Output Impedance: 400Ω

A/D-D/A Converters: 24bit

Indicators: Operating Status - Red light on power-up, then steady green light