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I'm using a Raspberry Pi 3 Model B running Android Things hooked up to a projector with a built-in speaker. The app is designed to relay a text-to-speech announcement every few minutes, but it just won't.

I've tried the HDMI cable on it's own, plugging an aux lead in (both before and after plugging the HDMI cable in – both produce horrible feedback), and unpowered USB audio.

I'm at my wits end now, so if anyone could provide a potential solution I'd be grateful!

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    There's not enough information here to help you debug what you have. Providing an entire solution probably too broad for this site. – Brick Apr 22 at 12:35

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