Question

application for multiple reflection of sound

Answer 1

Sound can get reflected a number of times before reaching us. The multiple of sound has a number of uses and consequences. Let us know how multiple reflection of sound is put to use by us.

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1. In stethoscope, the sound of patient's heartbeat is guided along the tube of the stethoscope to the doctors ear by multiple reflections of sound.

2. Horns, musical instruments such as trumpets and sehnais, loudhailers (megaphones), loudspeakers, etc., are all design to keep sound from spreading in all directions. In these instruments, a tube followed by a conical opening reflects sound successively to guide most of the sound waves from the source in the forward direction, towards the audience. The sound waves add up and the loudness of sound increases.

3. Reflection of sound plays an important role in designing the concert halls.

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Thanks for the question !

Answer 2

Applications of multiple reflection of sound?

Generally the ceilings of cinema halls and auditoriums are curved so that sound after multiple reflection reaches all parts of the hall.

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1) Megaphones and musical instrumentsà Megaphones or loudhailers, horns, musical instruments are all designed to send sound in a particular direction without spreading it in all directions. In these instruments, a tube followed by a conical opening reflects sounds successively to guide most of the sound waves from the source in the forward direction.

2) Stethoscopeà In stethoscope the sound of a patient's heartbeat is guided by along the tube of the stethoscope to the doctor's ears by multiple reflections of sound.

3) Curved ceilingsà the ceilings of a concert halls, conference halls and cinema halls are made curved so that sound after reflection reaches all the corners of the halls.

4) Sound boardsà in large halls or auditorium, large concave wooden boards are placed behind the speaker. The speaker stands at the focus of this concave reflecting surface. After reflection the sound is spread evenly towards the audience. This makes the sound readily available even at a distance.


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