NDLI: Subspace based vowel-consonant segmentation

Content Provider	IEEE Xplore Digital Library
Author	Muralishankar, R. Vijaya Krishna, A. Ramakrishnan, A.G.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore, India (Muralishankar, R.)
Abstract	In our (knowledge-based) synthesis system [G. L. Jayavardhana Rama et al., 2002], we use single instances of basic-units, which are polyphones such as CV, VC, VCV, VCCV and VCCCV, where C stands for consonant and V for vowel. These basic-units are recorded in an isolated manner from a speaker and not from continuous speech or carrier-words. Modification of the pitch, amplitude and duration of basic-units is required in our speech synthesis system [G. L. Jayavardhana Rama et al., 2002] to ensure that the overall characteristics of the concatenated units matches with the true characteristic of the target word or sentence. Duration modification is carried out on the vowel parts of the basic-unit leaving the consonant portion in the basic-unit intact. Thus, we need to segment these polyphones into consonant and vowel parts. When the consonant present in any basic-unit is a plosive or fricative, the energy based method is good enough to segment the vowel and consonant parts. However, this method fails when there is a co-articulation between the vowel and the consonant. We propose the use of oriented principal component analysis (OPCA) to segment the co-articulated units. The test feature vectors (LPC-cepstrum & mel-cepstrum) are projected on the consonant and vowel subspaces. Each of these subspaces are represented by generalized eigenvectors obtained by applying OPCA on the training feature vectors. Our approach successfully segments co-articulated basic-units.
Sponsorship	IEEE Signal Processing Soc
Starting Page	589
Ending Page	592
File Size	367592
Page Count	4
File Format	PDF
ISBN	0780379977
DOI	10.1109/SSP.2003.1289544
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech synthesis Knowledge engineering Virtual colonoscopy Concatenated codes Testing Humans Loudspeakers Linear predictive coding Covariance matrix
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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