Which part of shehnai,sitar and saxophone vibrates to produce sound?

Question

cn i noe vich prt produces sound in dese following instruments

Answer 1

the shehnai and saxophone produce sound identically, as they are reed instruments.

If you imagine that you are looking at the reed in slow motion while it is being played, you will see that the reed vibrates, and in turn opens and closes the mouthpiece/reed opening.

As air pressure that is built up in the mouth is released and sealed off from the reed vibration, a sound wave is produced, as a sound wave is really just air that is patterned in high pressure and low pressure.

The pitch of the sound wave is then controlled by changing the length of the instrument by opening and closing holes. If the sound wave is allowed to travel further down the cone-like tube of the instrument, the wave develops into a bigger wave-length, producing a lower pitch.

In a sitar, the vibration of the plucked string causes the hollow body to "push" and "pull" the air around it, creating a pattern of high pressure and low pressure in the air around it (which is a sound wave). Shorten the string length by pushing it down on a fret and the string vibrates faster, increasing the pitch.

In the sitar specifically, there are a bunch of strings that run behind the plucked strings called sympathetic strings. These strings also vibrate due to something called resonance, not because they are plucked (because they're not supposed to be plucked). The vibration of the string you pluck is all that is needed to cause the sympathetic strings to vibrate along with the sympathetic strings, which in turn create that airy, mystical, "droning" sound that makes the sitar sound very unique.

This effect can be somewhat seen in a piano when the sustain pedal is pressed down. If you firmly strike a key and keep the pedal down, you can faintly hear other notes playing along with the one you struck. Those notes are the other strings in the piano vibrating sympathetically simply because one other string (the key you struck) is strongly vibrating.

Hope that all makes sense. This would all look so much better in some sort of animation or video.

Answer 2

Shehnai is a wind instrument. When the air is forced through a small reed, it comes out aloud i.e., the forcing of air produces sound and the tune can be set ny blocking various holes on the shehnai.

Since sitar is a string instrument, when a string is plucked, it vibrates thus producing sound.

Saxophone is also a wind instrument and works in the same way as the shehnai but here more amount of energy has to be forced through the small hole.