Question

How does sound produce when whistling with the mouth? And how can we change it's frequency? Plz explain physically.

Answer 1

hi buddy

Air enters the whistle at one end. As the air reaches the other, closed-end, all the air molecules "pile up" on top of each other and cause a high-pressure region. The air escapes out the little hole in the end, making the noise you hear. The frequency of the sound is dependent on the length of the whistle.

hope this helps you

Answer 2

Answer:

The human whistle can be produced by forming a human mouth into a Helmholtz resonating chamber which resonate air at a frequency proportional to the volume of the cavity involved - a whistler changing tones alters their embouchure to adjust the cavity volume and opening