- Stringed instruments like the guitar have string or wire to produce vibrations, and hence the specific sound is produced.
- These instruments also have hollow boxes that amplify the sound that is produced.
- The frequency of a sound wave is varied by varying the length of the vibrating string. Violin, Guitar, Sitar are some of the examples of stringed instruments.
- A musical string has several frequencies at which it can vibrate naturally. These natural frequencies are known as the harmonics of the string.
- The natural frequency at which an instrument vibrates depends upon the string's tension, the linear density of the string, and the length of the string.
- Percussion instruments produce a specific sound when they are struck, scrapped or clashed together. They are the oldest type of musical instrument.
- There is a fantastic variety of percussion instruments all over the world.
- Percussion instruments like the drum and tabla consist of a leather membrane stretched across a hollow box called the resonator. When a membrane is hit, it starts vibrating and produces sound.