New Instruments and Methods for Speech Analysis
Toshiyuki Sakai, Sei-ichi Inoue · The Journal of the Acoustical Society of America · 1960
Some important features involved in the zero-crossing waves of the signal generated by the human voice are described. The method of analyzing the vocal sound by a Sonagraph using the natural wave forms is compared with our new method using the zero-crossing waves. Next, three kinds of devices are described which have been developed by the authors to analyze speech sounds. These include devices to analyze automatically the zero-crossing intervals, to display the zero-crossing waves in three-dimensional form, and to make a visible pattern of the zero-crossing waves. In this paper, as examples of an important application of these devices, the following are described: the results of analysis of vowels in the Japanese language, some characteristics of a number of groups of consonants (after the separation of the consonant and the vowel parts), and the discrimination of the nasal consonants, [m] and [n].