Seeed Studio ReSpeaker Mic Array v2.0

Description
ReSpeaker Mic Array v2.0 by Seeed is another?more extended?version of?ReSpeaker Mic Array v1. Based on the?XVF-3000?chip. A board with a?built-in?long-range?microphone, capable of detecting voices at a distance of?5 m, even in the presence of background noise.
With the ReSpeaker Mic Array v2.0 panel, you can?extend?your project with a voice interface. It is compatible with?Linux, macOS and Windows?systems. Array V2.0 has built in similar audio processing algorithms as its predecessor, but with far?better code quality.
TheAEC?(Acoustic Echo Cancellation)algorithm?is a?full-duplex?solution, which means that the device can playback audio while simultaneously listening to its surroundings. The number of microphones has been?reduced?from seven to four. Reducing the number of microphones allows for lower board costs. Thanks to the updated algorithms, the final quality of the voice processing has not decreased, but has improved.?The new chipset allows for circular or linear electronic design, as well as the ability to change the spacing of the microphones.
Key features of the ReSpeaker Mic Array v2.0 panel

Voice capture in the far field
Set of four microphones
12 programmable RGB LED indicators
Voice activity detection
Direction of sound
Noise suppression
Reverberation suppression
Acoustic echo cancellation
Supports USB Audio Class 1.0 (UAC 1.0)

Technical specification of the ReSpeaker Mic Array v2.0 controller

Parameter
Range

XMOS
XVF-3000

Microphones
4 high performance digital microphones

Far-field Voice Capture? support
Yes

Speech algorithm
Yes on chip

RGB LEDs
Yes, 12 programmable RGB LEDs

Microphones
ST MP34DT01TR-M

Sensitivity
-26 dBFS (omnidirectional)

Acoustic overload point
120 dBSPL

SNR
61 dB

Power supply
5 V DC or Micro USB ReSpeaker

Dimensions
70 mm (diameter)

Audio output socket
yes, 3.5 mm jack

Power consumption
5V, 180 mA with LED

Maximum sampling frequency
48 Khz