How we can differentiate the sounds produced by different individuals?

Question

what is the basis to identify a person only by hearing a sound produced by him without seeing him, as we are able to identify a man speaking on mobile withpout seeing him.whether the sound produced at different stages can be differentiated.

Answer 1

An individual produces sounds with their vocal cords that may be relatively thick (men) or thin (woman) and the vibrations resonate (reverberate) within an air column that includes all air above and below the vocal cords, especially the mouth and nasal cavities.  likely no two sets of vocal cords and resonating air columns are identical for any two people you know, helping with identification.  Also, men's vocal equipment usually supports the fundamental (lowest tone in a harmonic series) while female vocal equipment does not.  Ordinary bells (shaped like the liberty bell, etc.) also do not support the fundamental and we easily recognize bell tones.  Also children have relatively small resonant chambers which lose parts of the harmonic series and we recognize a voice as a child's (or dwarf's?).  There are also differences in accents and word choices (How ya doin?) that provide cues to identify our friends and acquaintances.  Donna Douglas (from Baton rouge, La) took elocution lessons to lose her Southern accent then had to get it back for her role as the lovely in Hollywood Hillbillies.

Answer 2

different people produces voice with different frequencies,

and our brain can differ them.

Answer 3

Hearing (or audition) is one of the traditional five senses. It is the ability to perceive sound by detecting vibrations via an organ such as the ear. The inability to hear is called deafness.

In humans and other vertebrates, hearing is performed primarily by the auditory system: vibrations are detected by the ear and transduced into nerve impulses that are perceived by the brain (primarily in the temporal lobe). Like touch, audition requires sensitivity to the movement of molecules in the world outside the organism. Both hearing and touch are types of mechanosensation

Ears can detect different frequencies of the organisms but human ear can hear frequencies between 20 Hz and 20000 Hz only.

Also the brain have this ability to recognize the known sounds which have been heard before.

Answer 4

Familiarity with the voice.