How is the sound produced in a piano?

In a piano, sound is produced by the vibration of strings. When a key is pressed, a hammer strikes the corresponding string, causing it to vibrate. The vibrating string produces sound waves that travel through the air and reach our ears. The pitch of the sound depends on the length and tension of the string, while the timbre of the sound is influenced by the material of the string and the shape of the piano's soundboard.

Here's a more detailed explanation of the process:

1. When a key is pressed, a lever called a key lever is depressed.

2. The key lever is connected to a jack, which is a small metal arm.

3. When the key lever is depressed, the jack moves up and engages with a hammer, which is a felt-covered wooden head.

4. The hammer is then forced against the string, causing it to vibrate.

5. The vibrating string produces sound waves that travel through the soundboard, which is a large wooden panel located behind the strings.

6. The soundboard amplifies the sound waves and radiates them into the air.

7. The sound waves reach our ears, and we perceive the sound.