A new acoustic method for the discrimination of monozygotic and dizygotic twins

The close similarity of the voices of consanguineous persons has suggested that there must exist hereditary phonetic parameters. To test this hypothesis, a method for characterizing numerically the similarity or dissimilarity of voices of twins with zygosity previously established by anthropological methods was elaborated. By speech processing and appropriate classification strategy the method has attained the discriminating power of blood-group determination for zygosity. The hereditability of certain physical parameters of the human voice has also been suggested.