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Delnoise explains in detail how noise barriers work, how our noise barriers block and eliminate unwanted noise.
A sound wave is a form of energy that causes a pattern of disturbance/vibrations (compression & rarefaction) in the molecules, when travelling through air water or any other form of liquid or solid.
A sound wave travel by compression and rarefaction of the molecules in the air, water or any other form of liquid or solid. Where else one complete cycle compression to compression is called as one wave length.
Sound is measured in Hz (Hertz) and dB(decibel),
So, the sound what we hear in our day today life is measured in dB (decibel), where else the Hz (Hertz) are used to measure the frequency of the sound in acoustics labs and experiments.
When the disturbance/ vibrations are fast, it is called as high pitch and when it is slow it is called as low pitch sound. In other technical terms, shorter the wave length it is called as high pith, longer the wave length it is called as low pitch.
Low pitch = Low Frequency
High Pitch = High Frequency
When the amplitude of the sound wave is small, it is called as quitter and when the amplitude is large, it is called as louder.
The noise barrier work by three fundamental/basic principles of blocking the sound waves
When the sound waves generated from the source meet the barrier, the waves are redirected or bounced back to the source where the sound is generated.
When the sound waves generated from the source meet the barrier, the most of the sound waves gets absorbed by the barrier.
When the sound waves generated from the source meet the barrier, the sound waves are scattered or diffracted by the barrier.
So, noise barriers work by blocking the direct path of sound waves from the source to the receiver. By Reflection, Absorption and diffusion of the sound waves.
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