Devoicing Measures of European Portuguese Fricatives

This paper presents a study of devoicing of European Portuguese fricatives. Two devoicing criteria (a manual criterion and a criterion based on the ratio of variances of the laryngograph signal during the VF transition and during the fricative) were used to classify the examples into two or three ca...

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Hauptverfasser:	Jesus, Luis M. T., Shadle, Christine H.
Format:	Buchkapitel
Sprache:	eng
Schlagworte:	Acoustic Signal Acoustic Speech Signal Applied sciences Artificial intelligence Computer science control theory systems Exact sciences and technology Manual Criterion Nonsense Word Software Sound Treated Room Speech and sound recognition and synthesis. Linguistics
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Beschreibung
Zusammenfassung:	This paper presents a study of devoicing of European Portuguese fricatives. Two devoicing criteria (a manual criterion and a criterion based on the ratio of variances of the laryngograph signal during the VF transition and during the fricative) were used to classify the examples into two or three categories. The results of the automatic and manual measures of devoicing are compared, and an explanation for observed misclassifications is presented. Devoicing occurs extensively in Portuguese; results are compared to those for English.
ISSN:	0302-9743 1611-3349
DOI:	10.1007/3-540-45011-4_1