To produce a high sound on the violin, the violinist places their finger closer to the bridge. This shortens the vibrating string and raises the pitch.
To produce a low sound on the violin, the violinist places their finger further away from the bridge. This lengthens the vibrating string and lowers the pitch.
The violinist can also use the bow to control the pitch of the note. By bowing closer to the bridge, the violinist can produce a brighter, more piercing sound. By bowing further away from the bridge, the violinist can produce a darker, more mellow sound.
The violinist can also use different bow pressures to control the pitch of the note. By applying more pressure, the violinist can produce a louder, more powerful sound. By applying less pressure, the violinist can produce a softer, more delicate sound.
By combining all of these techniques, the violinist can produce a wide range of sounds on the violin, from high to low, and from loud to soft.