Features

• Advanced 8-Microphone Array: Utilizes an 8-element circular array design, Integrated with ANS (Automatic Noise Suppression), AEC (Acoustic Echo Cancellation), and AGC (Automatic Gain Control) algorithms for crystal-clear audio capture
• Digital Audio Transmission: Supports digital audio transmission technology to eliminate line interference. Ensures high-fidelity sound through digital signal transfer
• Convenient Upgrading: Firmware updates are simple via the USB Type-C port or Ethernet connection. Keeps the microphone up-to-date with the latest features
• Effortless Cascading: Easily connect multiple CM30 microphones via Cat5e cables. Provides comprehensive coverage in larger classrooms or lecture halls

Specifications

Microphone

• Quantity: 8-array microphone
• Voice Pickup Range: Pickup radius ≥ 8 m
• Type: Omnidirectional microphone
• Frequency Range: 20 Hz ~ 20 kHz
• Signal-to-Noise Ratio: ≥ 68 dB
• Sound Pressure Level: ≥ 130 dB SPL (10%THD@1Khz)

Audio Algorithm

• Automatic gain control
• Automatic mixing
• Automatic noise reduction
• Anti-reverberation
• Automatic echo cancellation
• Howling cancellation
• Multi-microphone cascade

Physical Parameters

• Dimension (ØD × T): 138.5 × 27.3 mm
• Shipping Dimension (L × W × H): 852 × 276 × 68 mm
• Net Weight: 0.45 Kg
• Gross Weight: 1.4 Kg

Environmental Conditions

• Operating Temperature: 0°C ~ 40°C
• Storage Temperature: -20°C ~ 60°C
• Operating Humidity: 10% ~ 90% RH
• Storage Humidity: 10% ~ 90% RH
• Altitude: Below 5000 meters

I/O Port

• DMIC ×2
• USB Type-C (for upgrade and debug) ×1
• Reset ×1

Accessory

• Suspension Rod Bracket ×2
• Bracket Installation Parts ×2
• Quick Start Guide ×1

Electrical Parameters

• Power Supply: DC-48V/ 100mA
• Power Consumption: 4W