While playing music too loud can damage sense of hearing , there are other thing you should know about the effects of some sounds on the human body .
Decibels are used to value the volume of sound ( protract exposure to soundsabove 85 dB can make hearing loss ) , and frequency , which is measured in Hertz ( Hz ) , touch on to the amount of times a effectual undulation occurs each second . Human ears can mostly clean up on strait that fall in the 20Hz to 20KHz range . Frequencies above that are called supersonic , and frequency below 20Hz are sometimes referred to as infrasonic . Infrasonic sound is both naturally occurring ( earthquakes , ocean wave , upper - atmospheric lightning , etc . ) and man - made . Some survey have show that at mellow loudness , infrasonic sound can have superfluous - aural bioeffects , including sickness , headaches , and dizziness , but why ? The short solution : bad vibrations .
Sound is a waving of press traveling through a spiritualist . Infrasonic sound , for example , has a foresighted wavelength that , according toPopular Science , “ makes it much more capable of bending around or penetrating your body , create an oscillating pressure organisation . ” Every object , admit parts of the body , has a natural frequency at which it vibrates , a phenomenon known asresonance . Popular Sciencehas more to say about how miserable - frequency resonance dissemble the consistence :
A 1983 study on human body vibration vulnerability published inThe Journal of the Acoustical Society of Americafound that
Other studiessuggest that low - frequency noise , like thoseproduced by steer turbines , spark a response in the brain that could head to contrary wellness effects . The frequencies have also been linked tochanges in respiratory rhythmsdue to chest - wall quiver , with vary result count on whether the content is standing or sitting ( resonance go on at different levelsdepending on body position ) . Infrasound has beenused at haunted housesto make visitor finger uneasy , and some believe that there is a “ dark-brown note ” ( around 9Hz ) that could cause bowels to loose ( though this was “ busted ” by Adam Savage and Jamie Hyneman onMythbusters ) .
More research is postulate to amply understand why some people are affected and others are not , but engineer have beendeveloping sound - dampening technologyfor turbines , and somedoctors have suggestedthat haphazardness - canceling earpiece may help in other cases .
