Same reason everyone looks different when all our skeletons have basically the same structure.
It doesn’t take much variance to produce a notable difference when your brain has evolved specifically to tell the difference between humans.
Like how you can analyze very slight differences in skull features to identify unique human faces, your brain is very acutely aware of small variants in the typical human vocal range.
There’s both an inherent difference in the size, shape, and tension of vocal structures and learned differences in our language, mannerisms, and accents. Combined it makes us all fairly unique speakers.
Latest Answers