Mic?

Im sorry, im positive this has already been asked before, but i cant find any posts about it anywhere
ive been trying to play some nds roms such as Spectrobes that require use of the mic
but i dont own a physical mic for my computer
is there any way in hell to substitute mic sound so i can play these games? :'(

then buy one ::) :-X

You need to get one. There's no other way, unless you get a sound similar to a short puff or a loud short noise to trigger a mic feature. And then import that into a live streamer I think program, and then play that back while playing in no$gba etc. Don't ask me for more info, I don't even know. Just get a cheap $10 one.