The best part of a piano is the section that produces sound, which is known as the soundboard. The soundboard is typically made of spruce or fir and is located under the strings. When the strings are struck, they vibrate and cause the soundboard to vibrate as well. This vibration creates sound waves that travel through the air and reach our ears.
The size and shape of the soundboard affect the tone and volume of the piano. A larger soundboard will produce a louder sound, while a smaller soundboard will produce a softer sound. The shape of the soundboard also affects the tone of the piano. A soundboard with a more rounded shape will produce a warmer sound, while a soundboard with a more angular shape will produce a brighter sound.