Question

which instrument produces a pure sound and one note​

Answer 1

Answer:

ok

Explanation:

1. A multiphonic is an extended technique on a monophonic musical instrument (one that generally produces only one note at a time) in which several notes are produced at once. This includes wind, reed, and brass instruments, as well as the human voice.

Answer 2

A tuning fork is the instrument used to produce the sound of a certain fixed frequency. A tuning fork is a sound resonator which is a two-pronged fork.