how loud can human ears hear?
de.ci.bel 🔊 a unit used to express relative difference in power or intensity, usuallybetween two accoustic or electric signlas, equal to en times the common lagarithm of the ratio of two levels. 34. N ormal Breath the sound which can be observed by anyone when someone is breathing that's the lowest sound which can be observed by human ears. sound is at a low frequency which is rated as 10 db. 33. Rusting Leaves : you may remember that day when you were walking i forest o any park you step your foot on dead and drry leaves when you smashes the rusted leaves then a sound is produced that sound is known as rusting leaves which generates a unit of 20 dB. 31. To awaken a sleeping person Awaking someone from their sleep is a kind of difficult work as they refuse to make it. but during that when they make noise like yawaning or acting of moaning that tone is about 40 dB. 30.air conditioning unit...