Scientists create very thin fabric with noise-canceling effect

May 29, 2024  22:14

Researchers at the Massachusetts Institute of Technology (MIT) have developed a unique fabric that can effectively filter sound, much like noise-canceling headphones do.

The development builds on previous research: in the past, scientists were able to create a silk-like fabric that could amplify sound like a microphone. While studying it, scientists thought that based on it it would also be possible to make fabric with the opposite function - suppressing sounds. When sounds pass through current fibers, vibrations are created that can absorb these sounds.

The fabric developed by scientists is no thicker than a human hair, making it one of the thinnest and lightest of its kind. It is made using piezoelectric fiber, which creates vibrations when current passes through it.

In direct suppression mode, when the fabric creates vibrations, the volume of sounds is reduced to 65 decibels. By using fabric as a sound barrier, which remains motionless under tension, noise levels are reduced by 75%.

Initially, the technology turned out to be effective only in small rooms. For large-scale applications, including absorbing sound in an entire room, the researchers took a different approach, turning the fabric into a sound barrier that reflects sounds back to their source.

Although the current results look promising, scientists are challenged to conduct more research. The technology requires further development before a finished product capable of protecting against noise in large rooms can be released on the commercial market.

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