Many musical instruments use "boxes" as a part of an instrument. some examples are acoustic guitars and pianos. from your experience in this lab on building your own musical instrument, write a brief essay on the purpose of these "boxes". include description of a xylophone and what is uses of for the purpose of the box.

Answer :

Essay on Sound instruments/sound boxes:

Musical instruments also some times called "sound box",  because the box modifies the sound of an instrument. It also helps in transfer of sound to the surrounding air.

The box is the open chamber in the body of musical instrument

The sound box responds more strongly to vibrations at certain frequencies created by playing instrument. This phenomena is known as resonance.

The resonance impacts on the tone quality.

For example xylophone, which is a musical instrument with wooden bars. These wooden bars are arranged similar to the piano. under each bar of the xylophone there is a resonator tube, which amplifies the sound.

their crystal patterns have been disrupted by stress

it would be kevlar ^^