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Mini-Quiz: Noise Reduction of Sound

by Ron Kurtus

Take this Mini-Quiz to check your understanding of the lesson material.

1. How can you reduce noise at its source?

Muffle or block out what causes the noise

Call the police anything some noise irritates you

Wear earplugs

2. What will prevent a room from being noisy?

Eliminate its windows

Rugs, drapes and acoustical tiles

Keep it airtight

3. What does masking of a sound do?

It produces a sound that makes the noise less obvious

It is covering the source of the sound, often with masking tape

It amplifies the noise by adding irritating sounds of water flowing

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

One person's music can be another's noise

Resources and references

Ron Kurtus' Credentials


Technology of Dynamic Noice Reduction

The Sound of Silence: How to Reduce Home Noise - Mother Earth Living Magazine

Noise Reduction - Wikipedia

Silentium - Company provides products and solutions for the reduction of acoustic noise generated in electrical products

Physics Resources


(Notice: The School for Champions may earn commissions from book purchases)

Top-rated books on Acoustical Noise Reduction


Top-rated audio CDs on Relaxation Sounds

Soniscape Sound Masking CD

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Noise Reduction of Sound

Sound Waves

Characteristics of sound

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