eli5 what does “gain” mean in regards to audio and recording?

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Basically just looking into external mics for my phone and all the reviews for the different products I’m looking at are talking about “too much gain” and “not enough gain” and I have no earthly idea what that means. I tried looking it up, but it’s confusing as hell for someone with no know, who just wants to record concerts to listen to again later

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Anonymous 0 Comments

AFAIK (not an audiophile), but gain refers to the amount of sound energy the microphone translates into signal for recording or re-processing through the remainder of the audio equipment. Take your voice as an example and keep your personal volume exactly the same at each attempt. Turn the gain up too high and the mic will pick up your breathing, the compression of your lips when you close your mouth or even your beard hairs jiggling against one another. Turn the gain too low and you’ll sound like you’re at the other end of a large room (or worse, not be detectable at all)

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