Sipeed MAIX R6+1 Microphone Array

AI is pervasive today, from consumer to enterprise applications. With the explosive growth of connected devices, combined with a demand for privacy/confidentiality, low latency and bandwidth constraints, AI models trained in the cloud increasingly need to be run at the edge. MAIX is Sipeed’s purpose-built module designed to run AI at the edge, we called it AIoT. It delivers high performance in a small physical and power footprint, enabling the deployment of high-accuracy AI at the edge, and the competitive price make it possible embed to any IoT devices. As you see, Sipeed MAIX is quite like Google edge TPU, but it act as master controller, not an accelerator like edge TPU, so it is more low cost and low power than AP+edge TPU solution.

Features: 

• 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
• Connector : Support 2*5P 2.54mm header and 10P 0.5mm FPC connector
• Signal to noise ratio : 57dB(20kHz bandwidth, A-weighted)