Akhilesh kumar Dubey

Akhilesh kumar Dubey
Indian Institute of Technology Guwahati | IIT Guwahati · Department of Electronics and Electrical Engineering (EEE)

PhD From IIT Guwahati

About

12
Publications
2,749
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67
Citations

Publications

Publications (12)
Article
Hypernasality in the speech of children with cleft palate is a consequence of velopharyngeal insufficiency. The spectral analysis of hypernasal speech shows the presence of nasal formants and anti-formants in the spectrum which affects the harmonic-intensity. The nasal formants increases whereas the anti-formants decrease the magnitude of harmonics...
Conference Paper
Hypernasality is a speech disorder in cleft palate (CP) children. Hypernasality detection is done by analyzing the vowels present in the speech stimuli. The presence of nasal peak in the vicinity of first formant F 1 is an important acoustic cue for the hyper- nasality detection. Generally, a two-step process is followed for hypernasality detection...
Article
The presence of hypernasality in repaired cleft palate (CP) speech is a consequence of velopharyngeal insufficiency. The coupling of the nasal tract with the oral tract adds nasal formant and antiformant pairs in the hypernasal speech spectrum. This addition deviates the spectral and linear prediction (LP) residual characteristics of hypernasal spe...
Conference Paper
In this work, spectrum of vowels /a/ and /i/ belonging to normal, mild and moderate-severe hypernasal cleft palate (CP) speech are analyzed to find the nature of magnitude of dominant harmonics and their frequencies in these three levels of hypernasality severity. The coupling of nasal tract with the oral tract during the production of hypernasal v...
Article
This study proposes a method for differentiating hypernasal-speech from normal speech using the vowel space area (VSA). Hypernasality introduces extra formant and anti-formant pairs in vowel spectrum, which results in shifting of formants. This shifting affects the size of the VSA. The results show that VSA is reduced in hypernasal-speech compared...
Conference Paper
This work analyses the hypernasal cleft palate speech for 4-point severity rating (0-normal, 1-mild, 2-moderate, 3-severe). Hypernasality results nasalization of vowels and some of voiced consonants. Addition of extra nasal peak in vicinity of first formant occurs due to nasalization. To resolve the closely spaced extra nasal peak and first formant...

Questions

Questions (4)
Question
I followed the method given in the paper " Formant Location from LPC Analysis data" by Roy C. Snell and Faustro Milinazzo. BUt i could not understand the way they are bisecting the interval .can any one  help ?

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