USB Microphone for Raspberry Pi

Features:

• Full Size USB Microphone!
  
• Sensitivity: -47dB ± 4dB
• Sensitivity reduce: -3dB at 1.5V
• Working Voltage: 4.5V
• Frequency response: 100 ~ 16kHz
• SNR: More than -67dB
• Cable length: approx. 2.5ft
• Reads sounds from up to 6 1/2 feet away!

References:

• How to turn your Raspberry Pi into an Alexa-powered speaker: https://github.com/amzn/alexa-avs-raspberry-pi/blob/master/README.md