Reflection of Sound....................................

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1. Reflection of sound   By Students of 9 D By Natasha, Shwitaan, Raiyan, Reya, Sargam, Sanjana, Hemachandra 

2. What is Reflection of Sound ? Reflection of sound occurs when sound waves bounce back from the surface of a solid or liquid.  The reflection of sound follows the laws of reflection.  ​ The angle of reflection is equal to the angle of incidence  ​  The reflected sound, the incident sound, and the normal sound belong in the same plane.  

3. Types of Reflection of Sound Types  Definition Example Specular Reflection Specular reflection of sound is a phenomenon that occurs when a sound wave strikes a smooth, flat surface at an angle and returns at the same angle. Specular reflection  occurs when the sound waves encounter a large smooth boundary, such as mirrors, and polished floors. Diffused Reflection Diffuse reflection occurs when sound waves hit an irregular surface and the sound energy is scattered into non-specular directions . Diffuse reflection would occur when sound hits on rough surfaces, such as  carpets, walls, and papers . Multiple Reflection Multiple reflection of sound is  when sound waves bounce off obstacles and reflect many times before reaching the listener . Some of the examples of multiple reflection of sound involve  stethoscopes, megaphones, ear trumpets.

4. Some uses of Multiple reflection of sound.

5. Echo  An echo occurs when sound waves are reflected off a surface and returned to the listener.  The auditory sensation lasts for approximately 0.1 seconds in our brain.  ​ A clear echo requires a minimum of 0.1 seconds to occur between the source of sound and the reflected sound. ​ ​ For hearing distant echoes the minimum distance of the obstacle from the source of sound must be half the distance that is 17.2 meters.

6. Reverberation The continuous sound created by successive reflections is referred to as reverberation.  Reverberation The noise generated in a large hall reverberates repeatedly off the walls, diminishing in volume until it is undetectable.  ​ In order to minimize reverberation, sound-absorbing materials such as rough plaster, compressed fiberboard, and drapes are typically used to cover the auditorium's roof and walls.

7. Conclusion In conclusion, sound reflection is governed by the same principles as light reflection. The incident sound, reflected sound, and normal sound all lie in the same plane since the angle of incidence and reflection is equal. 

8. For listening