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| Title | Obtaining LIP and Glottal Reflection Coefficients from Vowel Sounds |
| Publication Type | Conference Paper |
| Year of Publication | 2006 |
| Authors | Deng, H., R. K. Ward, M. P. Beddoes, and D. O'Shaughnessy |
| Conference Name | Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on |
| Pagination | I -I |
| Date Published | may. |
| Keywords | acoustic wave reflection, filtering theory, glottal reflection coefficients, glottal waves, glottal-vocal-tract filters, human mouths, inverse problem, inverse problems, lip reflection, phonation, speech, speech processing, vocal-tract area functions, vowel sounds |
| Abstract | Knowledge about lip and glottal reflection coefficients during phonation is needed to eliminate their distortion effects on the estimates of vocal-tract area functions and glottal waves from vowel sounds. Direct measurements of these coefficients at human mouths are difficult. This paper presents a method for estimating them from vowel sounds. The estimation encounters an ill-defined inverse problem: the number of unknowns is greater than the number of constraints, and non-unique solutions exist for a sound. To overcome this problem, this paper uses a vowel sound produced by a subject whose vocal-tract area function (VTAF) for the sound is known. The estimates of the lip and the glottal reflection coefficients are determined as those that lead to a VTAF solution most similar to the known VTAF for the sound. The lip and the glottal reflection coefficients obtained for /a/ and /i/ are presented |
| URL | http://dx.doi.org/10.1109/ICASSP.2006.1660035 |
| DOI | 10.1109/ICASSP.2006.1660035 |