Hi I saw your product video :https://youtu.be/dQxtl8hA7BA AUDIO OUTPUT is voltage raght? so how can i change voltage to Audio LEVEL?
appendix is my sound detector code
新文字文件.txt (1.51 KB)
Call a1 on that line for the print audio level (or use it another way)
Hi there i had Call the a1 but it get analog output ,how can i convert analog to decibel? Thanks for answer 
The decibel is defined as a ratio, so you also need to define and measure a base level.