PRODUCTION OF SOUND

Published on: February 06, 2024

Introduction

Take a look at your surroundings and listen to the sounds. You can hear different sounds; some of them are natural sounds, and some of them are human-made. You know sound is a form of energy that gives us the sensation of hearing. Can you ever imagine a world without sound? Let's explore more about sound.

Production of sound

The sound is produced due to the vibration of physical objects.  That means the parts of the object move to and fro.

Let’s do some activities:

  • Suspend a table tennis ball or a small plastic ball with a thread of support. Take a tuning fork and set it vibrating (exciting) by striking its prong on a rubber pad. Listen to the sound of the vibrating tuning fork. Then touch the ball gently with a prong of the vibrating tuning fork. Then the ball will start oscillating.

  • Fill a beaker with water. Gently touch the water surface with one of the prongs of the vibrating tuning fork. Then waves are produced on the surface of the water. Press the prongs with your fingers, and then dip them again into the water. Now, no waves are generated.

The sound of a human voice

The sound of the human voice is produced due to vibration in the vocal cords.

Can sound make a light spot dance?

Take a cylindrical can and remove both ends to make it a hollow object. Take a balloon and stretch it over one hollow end of the can. Then, wrap a rubber band around the balloon. Take a small piece of mirror. Stick the mirror on the balloon.

Allow the light to pass through a slit to fall on the mirror. After reflection, the light spot is seen on the wall. Talk directly into the open end of the can and observe the dancing light spot on the wall.

Musical Instruments & Their Vibrating Parts

Sl.No.

Musical Instruments

The vibrating part produces sound

1.

Veena

Stretched string

2.

Tabla

Stretched membrane

3.

Flute

Air-column

4.

Drum

Stretched membrane

5.

Nadaswaram

Air-column

6.

Sitar

Stretched string

7.

Harmonium

Metal Reeds

8.

Dholak

Stretched membrane

9.

Ektara

Stretched membrane

10.

Manjira(Symbols)

Metal Plates

11.

Ghatam

Body(Uddambu)

12.

Kartal

Wooden parts

13.

Jaltarang

Glass bowls

 

When we pluck the string of an instrument, like the sitar, the sound that we hear is not only that of the string. The whole instrument is forced to vibrate, and it is the sound of the vibration of the instrument that we hear.

 

Frequently Asked Questions

 

Q1. What is a sound?

Ans: A sound is a form of energy produced by vibrating objects, which creates waves that travel through a medium, usually air.

Q2. How is the sound produced?

Ans: Sound is produced when an object vibrates, causing compressions and rarefactions in the surrounding medium, resulting in a wave pattern.

Q3. What is sound production?

Ans: Sound production involves the generation of vibrations in a source, which creates waves that travel through a medium and are detected by a receiver, such as the ear.

Q4. How does vibration contribute to sound production?

Ans: Vibrations in a sound source, like a guitar string or vocal cords, create compressions and resonances in the surrounding medium, forming sound waves.