The effects of intonation on acoustic properties of fricatives
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چکیده
This study investigates acoustic properties of the Polish retroflex and alveolo-palatal fricatives and affricates /ʂ/, /ʈ͡ʂ/, /ɕ/ and /tɕ͡/. The sibilants were produced in (i) yes/no questions with rising intonation and (ii) answers with falling intonation. Multitaper spectra were used to compare the two places of articulation. Results show that the Centre of Gravity (COG) did not differentiate retroflexes from alveolo-palatals in the question condition. The same consonants, however, display significantly different COG values if they are produced in the statement condition. Other spectral measurements (highest spectral peak, standard deviation, kurtosis) were also significantly different with regard to the two places of articulation and intonation types. The results indicate that special attention should be given to intonational differences when acoustic properties of sibilants are investigated.
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تاریخ انتشار 2015