Perceptive significance of frequency and amplitude characteristics of vowels with difference fundamental frequency

Andreeva, N. G.; Kulikov, G. A.

doi:10.1134/s0012496609060015

Dokl Biol Sci

2009

DOI: 10.1134/s0012496609060015

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Perceptive significance of frequency and amplitude characteristics of vowels with difference fundamental frequency

N. G. Andreeva

G. A. Kulikov

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Cited by 2 publications

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“…Recording, spectral analysis, and evaluation of the acoustic parameters were performed as described earlier [8,9]. The frequency, amplitudes of the first and the second formant, and spectral maximums, including the maximum of the fundamental frequency (for vocal sounds), were evaluated for each vowel.…”

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Acoustic parameters of two-formant vowels in different speech types

Andreeva

Kulikov

2014

Dokl Biol Sci

Self Cite

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At present time, the first formant of a vowel is established as the main characteristic of its phonetic type in speech [1,2]. At the same time, the "formant key" that plays an important role in the speech of adults cannot be applied to the speech signals with high fundamental frequencies, such as vowels in the speech of children or singing vowels. However, according to the theory of formant ratios [3], vowels are distinguished on the basis of the ratios of formant values, rather than formant values themselves. For mant ratios are supposed to decrease or prevent the influence of age and gender differences on the acoustic characterization of vowels [4,5]. Previously, we dis covered [6,7] that neither the absolute values of for mants nor the ratios of their frequencies could be used as distinctive parameters to identify the vowels [a], [o], and [u] with the fundamental frequency typical of children in their early years. The frequency depen dent relationship of the amplitudes of spectral compo nents is crucial in this case. Importantly, this feature is similar in the speech of children and adults [8].The aim of this study was to identify the acoustic parameters of two formant Russian vowels [i], [y], and [e] and find common phonetic characteristics of a sound in the regular (voiced) and whispering speech, i.e., disregarding the way it is spoken. Our results showed that pitch dependent relationships of the fre quencies of the first two spectral maximums are important for the perception of these vowels.In this study, the recorded sounds of speech of 45 children at the age of 3-5 years and 240 women (18-20 years old), as well as sounds of whisper of 140 men and women at the age of 18-20 years were used. Recording, spectral analysis, and evaluation of the acoustic parameters were performed as described earlier [8,9]. The frequency, amplitudes of the first and the second formant, and spectral maximums, including the maximum of the fundamental frequency (for vocal sounds), were evaluated for each vowel. In some cases, to determine the spectral maximum suffi cient for preservation of the phonetic quality of a vowel, additional analysis was performed by suppress ing the amplitudes of its individual spectral compo nents. The vowels assigned to specific phonetic cate gories with high significance were included in the study.The analysis of women's sounds (n = 2142, includ ing 891 [i], 511 [y], and 740 [e]) showed that the abso lute values of formant frequencies did not always cor relate with the phonetic type of a vowel: the conven tional representation of vowels on the two formant plane showed the overlaps [i]-[y] and [y]-[e]. At the same time, the frequency ratios of the first two spectral maximums of the vowels [i], [y], and [e] changed dif ferently depending on the fundamental frequency, so these ratios could be used to distinguish these sounds. Statistical analysis showed that the correlation between fundamental frequencies and ratios of fre quencies of the first two spectral maximums was statis tically significant for e...

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confidence: 99%

Acoustic parameters of two-formant vowels in different speech types

Andreeva

Kulikov

2014

Dokl Biol Sci

Self Cite

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Comparative analysis of the acoustic parameters of vowels in child and adult speech

Andreeva

Kulikov

2012

Dokl Biol Sci

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Perceptive significance of frequency and amplitude characteristics of vowels with difference fundamental frequency

Cited by 2 publications

References 3 publications

Acoustic parameters of two-formant vowels in different speech types

Acoustic parameters of two-formant vowels in different speech types

Comparative analysis of the acoustic parameters of vowels in child and adult speech

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