Sonic Black Hole Developed in Laboratory to Slow Down Sound Waves
Researchers at Ramon Llull University have produced a device that slows down sound waves, dissipates their energy, reduces echoes, and can be added to existing pipes.
Researchers working within Ramon Llull University in Spain have developed a new acoustic system that can significantly reduce echoes by controlling the movement of sound waves.
Working Principle of the System
This system, which does not produce a real black hole, takes advantage of the principle that sound waves gradually slow down and lose their energy under certain conditions. As sound waves entering the device advance, they slow down, their wavelengths shorten, and their energy concentrates in specific regions.
Prototype Design and Tests
To test the system, the researchers used a 3D printer to produce a prototype that is 15 centimeters long. This device consists of 29 rings of gradually changing sizes placed on a central rod.
Integration into Existing Systems
One of the most important advantages of the new design is that it can be easily retrofitted into existing pipe and ventilation systems. The device, which can be manufactured independently, can be placed directly inside existing pipes.
Potential Areas of Use
This technology can be used in ventilation systems, air conditioners, industrial pipelines, and mufflers. Reducing sound reflections generated in systems helps control noise.