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QWERTY · Guest

I have heard that for Film industry, for morphing purposes, they took
few hundreds photos of man, of different breeds (sorry if my English is
bad:) ) and pointed out some areas on face, like position of eyes,
position of top of the chin, position of top of the chin and so on.
After that measurement, they calculated average positions of all of
that spots and they draw the face of the "Average Male".

After that, they measured few hundreds of woman, and build the face of
the "Average Woman".

And, after all, they made matrix of coefficients, and when you multiply
picture of that "Average Man" with the matrix, output picture is
picture of the "Average Woman".

So, it is possible, when multiply picture of any man with matrix, to
get the picture of woman that is, let say so, analogous or compatible
with him.

All that story is intro in what I'm wondering to know:

Does anyone know the simple algorithm to change formants of man's
voice in order to build analogous woman's voice. (or childrens voice),
and vice versa ??

Thanks!

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