white noise from SPK HAT

[lkebin]

Hello, I'm try to test audio on M5StickC Plus with SPK HAT, using [WebRadio_with_ESP8266Audio.ino] example.

How can I avoid the white noise ? or is it expected from design ?

https://user-images.githubusercontent.com/1335935/205261281-046090bb-7b33-44a1-acd0-28f1f6aca4e7.mp4

[lovyan03]

Hello, @lkebin .

There is a hardware circuit problem, which has been resolved in the newly manufactured ones. If you have soldering skills, you can reduce noise by connecting a capacitor to GND.

[lkebin]

Cool, let me have a try. Thank you !

[lkebin]

Better than before, Thanks.