Noise print

Imagine you have a secret message that you want to tell your friend, but there are other people around who might hear you. To keep your secret safe, you and your friend come up with a secret language that only both of you know.

Now, imagine instead of people, there are different sounds around you, like a car passing by, a bird chirping, or someone talking. These sounds can also make it hard to hear your secret message.

To solve this problem, you and your friend can create a "noise print." This means you listen to all the sounds around you and remember them. Then, when you want to tell your secret later, you can recreate those same sounds and use them to cover your message.

So if a car passes by while you're telling your secret, you can record the sound of the car passing and use it again later. This will make it harder for anyone else to hear your secret message.

A noise print can also be used by software programs that try to clean up audio recordings. They listen for background noises and remember them, so they can remove them and make the recording sound clearer. Just like you and your friend using a noise print to keep your secret safe, these programs use a noise print to make the recording easier to understand.