[Aeroacoustics] People With Similar Voice

Ever heard someone who can do impeccable vocal impressions of several other people? Do you think they only do impressions of a group who happen to share 'almost the same geometry in their vocal tract'?

several factors come to mind, a persons built, constitution, weight etcetera do all influence the voice, also like truth..... said, the human vocal tract is not like an instrument but consists of many muscles to modify the sound. but i guess you mean the base voice.

No. All that you can deduce is that they are able to produce similar sounds.

I think of those who produce realistic sounds of guns firing, I've heard several people do similar impersonations of war, of trains, of automobiles....

They may be able to reproduce a phoneme identically, but that's about it. A big part of voice production is in your brain, not at your cords. S.M.

Am I right to say that people who produce similar voice do have similarity in certain way even though maybe it is not necessary for them to possess same glottal geometry, volume or so on. But, I believe that there is reason in the phonation process which leads to similar voice. Maybe glottal geometry, volume or others that I mentioned may not be the important parameters. Dunno who has ever researched about the aeroacoustics of phonation? Including the vortical structures produced starting from vocal fold until they are puffed out from the mouth after being resonated in nose and mouth, the Coanda effect at the leading and trailing edge of the vocal fold and so on. Dunno who has ever did the numerical simulation of aeroacoustics phonation inside the larynx before? Do comment and give ideas for the reasons of the similarity.

it might be just a state of mind. i've noticed that people's voices change with there mood. i think the larynx is tied into stress factors.

I would say yes, the same relaxed shape. I currently know two people whose voices sound almost identical. Voice impersonators can modify this shape to mimic others' voices. I wonder how you could learn to do this without a recorder since your own voice sounds vastly different through the bones in the head.