In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 105, No. 2_Supplement ( 1999-02-01), p. 1396-1396
Kurzfassung:
Vowel classification methods based on either formant representations or overall spectral shape nearly always begin with the calculation of a smoothed, pitch-independent spectrum. In this report, a method is described for the classification of vowels directly from high-resolution spectra that retain harmonics of the voice source. Recordings were made of ten sustained vowels spoken by 20 men and 20 women. Smoothed spectral-shape templates for each of the vowels from a random half of the talkers were constructed as the average of the normalized spectra of like vowels spoken by different talkers. The key steps in the normalization procedure consist of: (1) removal of spectral tilt by the subtraction of a running average of spectral amplitudes, (2) dynamic range compression of the tilt-adjusted spectrum, and (3) smoothing across frequency. High-resolution harmonic spectra from the remaining half of the talkers were then classified by computing the bin-for-bin difference between the harmonic spectrum and each of the smoothed spectral-shape templates.
Materialart:
Online-Ressource
ISSN:
0001-4966
,
1520-8524
Sprache:
Englisch
Verlag:
Acoustical Society of America (ASA)
Publikationsdatum:
1999
ZDB Id:
1461063-2
