Keeping sound ‘outside’ by noise-canceling windows

At Sorama we want to make the world sound right. We know we can’t do this by just ourselves, but luckily we are not alone in this mission. DeNoize is another company that focuses on improving our living environment issues. They do so by implementing a smart window technology in buildings. The start-up uses noise-canceling, which we mainly know from headphones. By applying the same principle on buildings, you can leave unwanted sounds ‘outside’, such as loud trains and low-flying Boeings. DeNoize managed to reduce 80% to 90% of the outside noise.

“We all know that noise pollution has a big impact on our lives. At night it will disturb your sleep, which will result in less energy for the next day”, explains Aman Jindal, founder of DeNoize. “I wondered how to solve this problem. We spend lots of time inside, so that’s where I could make the biggest impact. Most noises enter via windows. So I know I had to start there.”

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Noise-canceling and anti-sounds

Keeping low-frequency noises from cars, trains and airplanes outside means that you would need glass of multiple meters thickness. To counter this, Aman found a solution in the form of noise-canceling or also called, anti-sound. Anti-sound is a sound that cancels another sound, which works well especially with low-frequency and monotone sounds. This technology is used in DeNoize smart windows. It analyzes the sound waves and predicts the incoming noises. With that information, it can produce an anti-sound and keep the unwanted noises outside.

Using the Sorama CAM64

With both companies having the same goal, it is almost obvious that we found each other in a collaboration. Ivo, our acoustic consultant, supported DeNoize to get a better understanding of the transmission of sound through windows. With the Sorama CAM64 we made near-field measurements and analyzed this data in the Sorama Portal. The results are used to visualize the added value of DeNoize technology as compared to the traditional windows.

Schiphol environment

Currently, DeNoize is developing their product further. Currently, they are preparing a pilot, which will be implemented at the end of this year. “We still have some work left, but the final product should be ready for the market at the end of next year. Considering that we spend 90% of our time indoors, we keep on working passionately to make a quieter and more comfortable future”, concludes Aman.

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