 |
| Practical Applications of Reflection of Sound |
|
| Some applications of the principle of reflection of sound are: |
| |
 Megaphone |
| |
 Hearing Board |
| |
 Sound Boards. |
| |
| Megaphone: Megaphone is a horn-shaped tube. The sound waves are prevented from spreading out by successive reflections and are confined to the air in the tube. |
| |
| Hearing aid: It is a device used by the people who are hard of hearing. Here the sound waves, which are received by the hearing aid are reflected into a narrower area leading to the ear. |
| |
| Sound Boards: Curved surfaces can reflect sound waves. This reflection of sound waves is used in auditorium to spread the waves uniformly throughout the hall. Reflection of sound waves is done by using Sound Boards. The speaker is located at the focus of the sound board. |
| |
|
| A musical sound can be defined as a pleasant continuous and uniform sound produced by regular and periodic vibrations. |
| |
| Example: The pleasant sound produced by a guitar, piano, tuning fork etc. |
| |
| Noise can be defined as an irregular succession of disturbances, which are discordant and unpleasant to the ear. |
| |
| Bats and dolphins can detect the presence of an obstacle by hearing the echo of the sound produced by them. This process is called sound ranging. |
| |
