▶ BASICS OF SOUND INSULATION: UNDERSTANDING NOISE


The difference between sound proofing and sound absorption

 

To understand the difference between sound absorbtion and sound proofing let's remember how the noise travels: when a sound wave is emitted, it is modified by parameters such as distance or obstacles. When a sound wave meets an obstacle like the wall of a room, a certain amount of energy is reflected back into the room. These successive reflections are called reverberation.


Sound proofing

Sound proofing (or sound insulation) attempts to stop noise by blocking the acoustic wave from traveling to adjacent spaces. 

Insulation can only be achieved with mass and/or multiple layers ot material in the walls or windows. It means, that the construction of the building is essential in this matter, and that additional sound proofing is not easy once the structure is already built.

 

Sound absorption

Sound absorption aims to reduce noise by limiting the reverberation of the sound wave within a space.

Absorption can be obtained with light materials (such as specific fabrics) that are applied to walls or windows, meaning it is easier to achieve once the structure is already built.


How can "soundproof" curtains help?

The impact of any sound insulation curtain depends on the kind of noise you are experiencing and the construction of your building.

As mentionned before, there are different types of noises with either high, medium or low frequencies. Different applications and treatments are needed to confront this spectrum of noises and there is no one-for-all solution.

Each sound environment is different and the intricacies of one's home have to be taken into account, because the noise does not come in simply from your windows but also seeps in through the walls and various openings.

Moondream sound insulation curtains aim to adress both - sound proofing and sound absorbtion - as best as possible with a solution that is equally functional and aesthetic. Our patented curtains have three strategically assembled layers of fabric to reduce the transmission of the sound wave and absorb the reverberation of the sound as well:

  • The incoming sound energy is dampended and divided by 4, reaching a drop of up to 7 decibels. 
  • The transmission of the sound wave is reduced and the reverberation is reduced: for a surface area of approximately 215 square feet, the reverberation time is reduced by 0.4 seconds.

The result of both actions is a quieter acoustic environment that will contribute significantly to your wellbeing. To improve the curtain's results you can add other absorbent materials to your floors such as carpet or a rug.

You have to be aware that if you wish to cut out certain low frequency sounds such as traffic noise completely, a curtain might not be enough (soundproof windows and thick walls would be necessary). Moondream curtains can however dampen the noise which can already be an important improvement and is a much more cost effective solution, especially if you are just renting.

 

 

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