TY  - JOUR
T1  - Spectral Analysis of Voiced Sounds Tracheotomisian Case
AU - , H. Maalem 
JO  - Research Journal of Applied Sciences
VL  - 2
IS  - 9
SP  - 984
EP  - 987
PY  - 2007
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2007.984.987
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2007.984.987
KW  - Spectrum
KW  -cepstrum
KW  -cumulant
KW  -tracheotomy
KW  -phonation valve
AB  - This study presents the cepstral and spectral analysis of a speech signal produced by a woman affected by a tracheotomy, with and without phonation valve. The spectral analysis based on parametric method (Autoregressive AR) using the fourth order cumulant, these analyses are used to detect and compare the principals characteristics of the speech signal: pitches, the formants and the intensity (energy) of corresponding voiced sounds (example: vowel i and u). The first results appear promising, since it seems, after several experiments there is no deformation of the spectrum as one could have supposed at the beginning, however this pathology influenced the pitch value, in addition the phonation valve influenced the energy value.
ER  -