Inharmonicity

Hey kiddo, do you know what a piano sounds like? When you hit a key on a piano, it makes a sound that is pretty, right? Well, that sound is made up of many different notes that all mix together to create the piano's unique sound.

Now, some of those notes are called "harmonic" notes. They are like the main notes that you hear when you hit a key. But there are also some other notes that aren't exactly in tune with the main notes. Those are the "inharmonic" notes.

These inharmonic notes are what make each piano sound a little bit different from the others. And they happen because the strings inside the piano aren't exactly perfect. When you hit a key, the strings start to vibrate and make sound. But they don't vibrate perfectly, and that's where the inharmonicity comes in.

So, in simple terms, inharmonicity means that some of the notes that make up a sound aren't exactly in tune with the other notes. This is what gives the sound its unique character and makes each piano different.