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Comparison of various speech time-scale modificartion methods

Abstract

The objective of this work is to investigate the influence of the different time-scale modification (TSM) methods on the quality of the speech stretched up using the designed non-uniform real-time speech time-scale modification algorithm (NU-RTSM). The algorithm provides a combination of the typical TSM algorithm with the vowels, consonants, stutter, transients and silence detectors. Based on the information about the content and on the estimated value of the rate of speech (ROS), the algorithm adapts to the scaling factor value, and removes the redundant signal i.e. silence, stutter and transients. TSM algorithms named: SOLA, PSOLA and WSOLA were examined in order to assess the quality of the stretched speech, the complexity of the calculation and the possibility of their usage in the NU-RTSM algorithm. Subjective tests were performed in order to compare the quality of various time-scaling meth-ods.

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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
Archives of Acoustics no. 36, pages 488 - 489,
ISSN: 0137-5075
Language:
English
Publication year:
2011
Bibliographic description:
Kupryjanow A., Czyżewski A.: Comparison of various speech time-scale modificartion methods// Archives of Acoustics. -Vol. 36, iss. iss. 2 (2011), s.488-489
Verified by:
Gdańsk University of Technology

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