DC offset to speakers about pico-stuff HOT 2 OPEN

I believe you're right. If you have silence in the audio if it produces a constant level in the middle of the range (0 if you have a signed range, translating to a level of 128 with the unsigned representation). So we'll end up with a constant voltage out of the RC circuit.

Analogue electronics is not my forte so I just based my circuit on other simple PWM audio examples you can find online with a little tinkering. As I mention in the article the 'Hardware Design with RP2040' document (https://datasheets.raspberrypi.com/rp2040/hardware-design-with-rp2040.pdf) provides a circuit that is likely better. It utilities a second capacitor, perhaps this helps remove the DC offset?

I'll experiment with a similar second capacitor in my design and see what happens when I get a chance.

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Can you please share streming programme

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