NDLI: Effect of GCI perturbation on speech quality in Indian languages

Content Provider	IEEE Xplore Digital Library
Author	Lehana, P.K. Pandey, P.C.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. Eng., Indian Inst. of Technol., Mumbai, India (Lehana, P.K.; Pandey, P.C.)
Abstract	Harmonic plus noise model (HNM) divides the speech spectrum into two bands: harmonic and noise. One is modeled with harmonics of the fundamental and the other is simulated using random noise. As HNM analysis/synthesis is performed at each glottal closure instant (GCI), errors in estimation of GCIs affect the quality of the synthesized speech. The objective of this paper is to investigate the effect of the perturbation in GCIs on the synthesized speech quality. Childers and Hu's algorithm is used for GCIs calculations. Investigations show that the speech quality is very sensitive to positions of the GCIs. A small perturbation with maximum of 4 % of the local pitch period considerably degrades the synthesized speech. Perturbations above 8 % severely affect quality of the output speech.
Sponsorship	IEEE Region 10
Starting Page	959
Ending Page	963
File Size	315181
Page Count	5
File Format	PDF
ISBN	0780381629
DOI	10.1109/TENCON.2003.1273389
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-10-15
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Natural languages Speech synthesis Speech analysis Speech enhancement Frequency Performance analysis Signal processing Electronic mail Estimation error Degradation
Content Type	Text
Resource Type	Article

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