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1	IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING 1 Automatic Variation of the Degree of Articulation in New HMM-based Voices
	Benjamin Picart; Thomas Drugman; Thierry Dutoit
	In: http://tcts.fpms.ac.be/~drugman/files/STSP2013.pdf
	Abstract: Abstract—This paper focuses on the automatic modification of the degree of articulation (hypo and hyperarticulation) of an existing standard neutral voice in the framework of HMM-based speech synthesis. Hypo and hyperarticulation refer to the production of speech respectively with a reduction and an increase of the articulatory efforts compared to the neutral style. Starting from a source speaker for which neutral, hypo and hyperarticulated speech data are available, statistical transforma-tions are computed during the adaptation of the neutral speech synthesizer. These transformations are then applied to a new target speaker for which no hypo or hyperarticulated recordings are available. Four statistical methods are investigated, differing in the speaking style adaptation technique (model-space Linear Scaling LS vs. CMLLR) and in the speaking style transposition approach (phonetic vs. acoustic correspondence) they use. The efficiency of these techniques is assessed for the transposition of prosody and of filter coefficients separately. Besides we investigate which representation of the spectral envelope is the most suited for this purpose: MGC, LSP, PARCOR and LAR coefficients. Subjective evaluations are performed in order to determine which statistical transformation method achieves the highest performance in terms of segmental quality, reproduction of the articulation degree and speaker identity preservation. The most successful method is finally used for automatically modifying the degree of articulation of existing standard neutral voices.
	Keyword: De- gree of Articulation; Expressive Speech; HTS; Index Terms—Speech Synthesis; Speaking Style Transposition; Voice Quality
	URL: http://tcts.fpms.ac.be/~drugman/files/STSP2013.pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.471.6331
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2	PREDICTION OF CREAKY VOICE FROM CONTEXTUAL FACTORS 1
	Thomas Drugman; John Kane; Tuomo Raitio...
	In: http://tcts.fpms.ac.be/~drugman/files/ICASSP13_Creaky.pdf
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3	IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING 1 Automatic Variation of the Degree of Articulation in New HMM-based Voices
	Benjamin Picart; Thomas Drugman; Thierry Dutoit
	In: http://tcts.fpms.ac.be/publications/regpapers/2014/jstsp_articulation_bptdtd.pdf
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4	Analysis and Synthesis of Hypo and Hyperarticulated Speech
	Benjamin Picart; Thomas Drugman; Thierry Dutoit
	In: http://tcts.fpms.ac.be/%7Edrugman/files/SSW7.pdf
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5	STATISTICAL METHODS FOR VARYING THE DEGREE OF ARTICULATION IN NEW HMM-BASED VOICES
	Benjamin Picart; Thomas Drugman; Thierry Dutoit
	In: http://tcts.fpms.ac.be/~drugman/files/SLT12-Picart.pdf
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6	GLOTTAL SOURCE ESTIMATION ROBUSTNESS A comparison of sensitivity of voice source estimation techniques
	Thomas Drugman; Thomas Dubuisson; Alexis Moinet...
	In: http://tcts.fpms.ac.be/publications/papers/2008/sigmap08_tdtdamndatd.pdf
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7	Assessing the Intelligibility and Quality of HMM-based Speech Synthesis with a Variable Degree of Articulation
	Benjamin Picart; Thomas Drugman; Thierry Dutoit
	In: http://tcts.fpms.ac.be/%7Edrugman/files/LISTA12.pdf
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8	IEEE SIGNAL PROCESSING LETTERS 1 Maximum Voiced Frequency Estimation: Exploiting Amplitude and Phase Spectra
	Thomas Drugman; Yannis Stylianou; Senior Member
	In: http://tcts.fpms.ac.be/~drugman/files/SPL-MVF.pdf
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9	IEEE SIGNAL PROCESSING LETTERS 1 Fast Inter-Harmonic Reconstruction for Spectral Envelope Estimation in High-Pitched Voices
	Thomas Drugman; Yannis Stylianou; Senior Member
	In: http://tcts.fpms.ac.be/~drugman/files/SPL-FIHR.pdf
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