### ASA 127th Meeting M.I.T. 1994 June 6-10

## 1pSP51. Characterization of fluctuations in a fundamental period of speech
based on fractal analysis.

**Tetsunori Kobayashi
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*Dept. of Elec. Eng., Waseda Univ., 3-4-1 Okubo, Shinjuku, Tokyo, 169
Japan
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New parameters representing the naturalness of fluctuations in fundamental
periods of speech are proposed. They are calculated from the intermediate
parameters for the calculation of fractal dimension. This paper shows their
strong relationship with the perceptional judgments using GRBAS. Fluctuations
in the fundamental period are important for the naturalness of speech. Many
researchers have been trying to quantificate the naturalness of fluctuation.
Although some researchers insist on the effectiveness of the fractal dimension
for this purpose, it is difficult to find the obvious correlation between the
fractal dimension itself and GRBAS. However, the contours of the intermediate
functions for the calculation of a fractal dimension such as N[sub k](r)
[{number of pairs x[sub i] , x[sub j] such that (parallel)x[sub i]-x[sub
j](parallel)
Precis presentations will be held in Kresge Little Theatre from 12:55 to
2:40 p.m. followed by poster displays in Kresge Rehearsal Room B. Posters will
be on display, and all authors will be at their posters, from 2:45 to 4:45
p.m.