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So I work with many devices that produce static or other undesired noise and I want to use my raspberry pi zero to filter the static from the incoming audio and play it out of the HDMI audio device. I know how to use PulseAudio to filter a source and pump it into a sink. What I don't know is how to turn the GPIO pins into a 3.5mm "aux" jack.

Timberwolf
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1 Answers1

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Thanks to @Mark, I figured out I just need a GPIO audio card with a line in, then using an "aux" cord directly connect the line in and device.

Timberwolf
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