Overview

The Maix R6+1 Microphone Array module features 6+1 digital microphones and 12 RGB LEDs onboard, compatible with Maix AIoT series development boards. It is an ideal choice for voice-related applications such as sound source orientation, beamforming, and speech recognition.

Specifications

• 6+1 MEMS microphones (MSM261S4030H0):
  • Sound pressure level: 140 dB SPL
  • Sensitivity: -26(dB, dBFS @ 1kHz 1Pa)
  • Signal to noise ratio: 57 dB (20kHz bandwidth, A-weighted)
  • THD <1％ (100dB SPL @ 1kHz S = Nom, Rload> 2k)
  • Clock frequency:
    • 1.0-4.0Mhz (normal mode)
    • 150-800khz (low power mode)
• 12 RGB LEDs (SK9822):
  • Viewing angle: 120 degree
  • Dual-line synchronous
  • RGB three-color LED output control, 8-bit (256 level) color levels, 5-bit (32 level) brightness adjustment
  • Current: 20mA per color for each LED, 60mA at full color and full brightness
• Operating voltage: 3.3V
• Operating current: >750mA (full brightness)
• Temperature rise: <30K
• Operating temperature: -30℃ ~ 85℃
• Dimensions: 78mm × 89mm

Applications

• Sound source orientation
• Beamforming
• Speech recognition

Example

Note: for reference only, Maix Go in the photo is NOT included.

Dimensions

Development Resources

Wiki: www.waveshare.com/wiki/Maix_R6+1_Microphone_Array

1. Maix R6+1 Microphone Array x1