Quote Originally Posted by Bunny View Post
Quote Originally Posted by Jowy View Post
Quote Originally Posted by Roto13 View Post
Quote Originally Posted by Jowy View Post
Go nuts.
Holy quiet.
I don't have a microphone. =P I was shouting loudly into my headphones.
I didn't know headphones recorded things.
Microphones and speakers are using the exact same principle, just reversed :p. When sound waves affect the membrane of a speaker, it is set in motion, and it generates electrical impulses that can be recorded if it is plugged into the microphone plug, just like a microphone does.

The main difference is that microphones are usually much more sensitive than speakers, so using a microphone as a speaker will almost certainly destroy it, and using a speaker as a mic will result in very low volume recordings.