Hi Philippe,
if you want to detect a sentence, you need iot and VPN to work with google assistant, cortana or alexa. You can find a nice exercise like that in the video below.
If you just want to measure the volume, go ahead and connect a microphone directly to the tokymaker input. Make sure that the microphone can work with 3.7v.
Here is a link to a shop that sells these kind of sensors:
Taobao Link:
8fu置这行话 Http:/T$9EGOchqYroh$da開τa0寳【MAX4466声音传感器模块 麦克风前置放大器microphone】
Amazon Link:
