
Low-frequency noise
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Nyquist Team
Have you ever heard a persistent humming sound that you couldn't locate the source of, which seemed to penetrate through walls? This is the domain of low-frequency waves, which present one of the most challenging problems in acoustic engineering. This noise is often felt more as a vibration than an audible sound.
Professional Definition
Noise in the spectrum, where significant components range from 10 Hz to 250 Hz.
In acoustic engineering, low-frequency noise (eng. Low Frequency Noise – LFN) is characterized by a long wave (for 20 Hz, the wavelength is as much as 17 meters). Due to the physics of wave propagation, these sounds are poorly attenuated in air and easily penetrate standard building partitions, such as walls or windows, often causing resonance phenomena in structural elements.
Acoustics in Simple Words
Imagine you are standing in front of a music club. When the doors are closed, you do not hear the high tones of the vocalist or the cymbals of the drums, but you still feel and hear the deep
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