CodePudding user response:

First heard about the MOS tube make a sound, the sound should include coil type,

It looks like you may be the electric motor, but can't turn

CodePudding user response:

High frequency or pulse width is too narrow, frequency on voice frequency, lower frequency, the motor turned her voice was low,

CodePudding user response:

Could be chose MLCC capacitor will scream

CodePudding user response:

Sound source must have got the wrong number, MOS might not sound, sound of words must be dying

CodePudding user response:

Integrated voice H bridge seen
Check the drive signal logic

CodePudding user response:

What is this software