If mics are for input and speakers are for the output then how come there are soundboards apps that allow you to play audio files through the mic??
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It’s the job of the OS to tell other programs how to distinguish between input and internal sound. You’re not playing it through the mic, per se. The app, say Discord just takes audio that the OS says came from the microphone. If you have an app that can change it or something, that app has higher priority, like a software pedal. Discord still thinks the audio is coming through the input, but it passed through something else along the way first.
An app, like a soundboard that doesn’t take input, can still tell the OS that its sounds are from the microphone. But most likely, it just treats it as internet sound.
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