Abstract
Some sentences were read two NHK announcers of different sex and their voices were analyzed by the Sonagraph of Kay Electric Co. The analysis was chiefly made in regard to the influence of the preceding and following consonants and syllables to the vowels. The results show that (1) the vowels of female voice show a much greater deviation than those of male, (2) in spite of that, parallel phenomena occur between the vowels of male and female, (3) the tongue's height does not always decide the frequencies of the first formants, but some other factors also have to do with this, and (4) the most important thing is that the five vowels have their own features with regard to the Gestalt of their spectra, although a few overlappings of frequency among them are seen.
