GBZ PWM Audio Filter Frustrations!
Posted: Thu Oct 14, 2021 5:00 am
Hi guys,
Currently mid-build for my Game Boy Zero and have run into audio issues...
I am using PAM8403 for my amp and have made a filter to try clean up the sound but the sound doesn't really change with the filter or without. This is the filter i am using https://learn.adafruit.com/assets/35685. I am using it in mono so have only built the top half.
For wiring i have RPI Physical Pin 12 to Filter, Filter to Amp L-IN, L-OUT to Speaker. The Amp is running to 5v supply from RPI. I have tried with and without a pot. The audio i get is a good volume but i have loads of interference whichever way i try to go. Am i just expecting too much? Any advice appreciated!
Currently mid-build for my Game Boy Zero and have run into audio issues...
I am using PAM8403 for my amp and have made a filter to try clean up the sound but the sound doesn't really change with the filter or without. This is the filter i am using https://learn.adafruit.com/assets/35685. I am using it in mono so have only built the top half.
For wiring i have RPI Physical Pin 12 to Filter, Filter to Amp L-IN, L-OUT to Speaker. The Amp is running to 5v supply from RPI. I have tried with and without a pot. The audio i get is a good volume but i have loads of interference whichever way i try to go. Am i just expecting too much? Any advice appreciated!