PicoMite: can we explain/fix "ticking" when using PLAY SOUND

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Joined: 16/09/2019
Location: United Kingdom
Posts: 3919
Posted: 11:13am 20 Mar 2023      

  matherp said  I would say a key problem is that you are inputting a highish voltage signal into a highish gain amplifier with a noisy power supply. You are then attenuating the input with RV1 which reduces the signal to noise ratio of the system.

OK , is a battery "noisy" ? Hopefully some of our bretheren will look kindly on this poor programmer with some suggestions on what he can do given he's only got about two square inches of PCB to provide audio and ideally wants something he can build from through-hole chinesium.

Yes, Peter (and everyone), I know I'm out of my depth and relying on the goodwill of others.

Best wishes,

Edited 2023-03-20 21:24 by thwill