- Plasma-Powered Noise Canceling: A new prototype device uses ionized air and wires to cancel out sound waves, working similarly to noise-canceling headphones but without a membrane. It moves the air directly, offering faster and broader frequency range cancellation.
Innovative Metalayer Design: The device features two metallic electrodes separated by a small air gap, creating a metalayer. By calculating the required voltage based on the sound picked up by a microphone, one electrode ionizes the air, converting molecules from neutral to charged. This stops air motion and eliminates the corresponding noise.
Impressive Sound Absorption: The experimental device, only three centimeters thick, effectively absorbs sound waves ranging from 20 to 2,000 Hertz. This breakthrough technology opens possibilities for more efficient noise reduction techniques in various applications.
Supplemental Information ℹ️
This novel approach to active noise cancellation harnesses plasma and demonstrates improved performance compared to traditional methods. The researchers’ use of ionized air instead of a vibrating membrane allows for faster and more versatile noise reduction across a wide range of frequencies.
Scientists made a special device that uses air and electricity to block out annoying sounds. It’s like noise-canceling headphones, but instead of vibrating, it uses charged air to stop the sound from moving. The device is thin and can absorb different types of noise, making it super useful.
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