There are certain factors that play a part in the pitch of a string vibration and there are at least three variables or pitch of a string vibration that depend on something. The musical instrument must be built so that it can make the music appropriately that it is supposed to make.
After that, one variable that affects string vibration is the way that the string was made to move or vibrate. Then it is about where the fingers are placed. They should be placed on the correct place. Overall, the most important thing that affects the pitch of a string vibration is about the person playing the instrument itself. It all depends upon the way the person plays the musical instrument.