Is a bass drum tuned or untuned percussion?

A bass drum is a tuned percussion instrument. The pitch of a bass drum is determined by the size of the drum, the material of the head, and the tension of the head. Larger drums produce lower pitches, while smaller drums produce higher pitches. Thicker heads produce lower pitches, while thinner heads produce higher pitches. Tighter heads also produce higher pitches, while looser heads produce lower pitches.