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Infrasound and low-frequency noise: Difference between revisions
Infrasound and low-frequency noise (view source)
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''Low-frequency noise'' is that at the deeper-pitched end of the human conscious hearing (i.e., “audible”) spectrum, usually defined as the range from 20 Hz to 160 Hz. The full audible spectrum for humans extends up to 20,000 Hz, although for most people it is more limited, and for others it may extend down to 10 Hz or even 5 Hz. | ''Low-frequency noise'' is that at the deeper-pitched end of the human conscious hearing (i.e., “audible”) spectrum, usually defined as the range from 20 Hz to 160 Hz. The full audible spectrum for humans extends up to 20,000 Hz, although for most people it is more limited, and for others it may extend down to 10 Hz or even 5 Hz. | ||
''Infrasound'' is that below the normal audible spectrum, i.e., <20 Hz. It is | ''Infrasound'' is that below the normal audible spectrum, i.e., <20 Hz. It is “felt” rather than heard. | ||
ILFN travels much farther with less dissipation than higher-frequency sound. It can go around barriers and penetrate – even resonate with – walls. | ILFN travels much farther with less dissipation than higher-frequency sound. It can go around barriers and penetrate – even resonate with – walls. | ||