How much decibel of a sound could a human ear can hear?

Here are some examples of the decibel levels of typical sounds: ... We can't hear the sound of a dog whistle, but a dog can because dogs have a much large hearing range than humans do. ... To figure out your specific hearing range, a hearing professional will perform a hearing test and plot your results on an audiogram. read more

The accepted theoretical threshold for human hearing is an SPL of 0 db. 0 db corresponds to an energy intensity of 1 x 10^-12 W/m^2. read more

The difference between the loudest and faintest sounds that humans can hear is about 120 dB, a range of one-million in amplitude. Listeners can detect a change in loudness when the signal is altered by about 1 dB (a 12% change in amplitude). read more