Geek Raspberry Pi add-on sound card enables audio output and voice commands Geek Sure, the Raspberry Pi can already output audio via its HDMI port, but additional flexibility is always welcome when you're working on a DIY project. That's one big reason Element 14 teamed up with Wolfson Audio to release an official add-on sound card ..

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Raspberry Pi add-on sound card enables audio output and voice commands – Geek