Acoustic assessment of erygmophonic speech of Moroccan laryngectomized patients

Acoustic evaluation of alaryngeal voices is among the most prominent issues in speech analysis field. In fact, many methods have been developed to date to substitute the classic perceptual evaluation. The Aim of this study is to present our experience in erygmophonic speech objective assessment and...

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Bibliographic Details
Published in:The Pan African medical journal 2015-08, Vol.21 (270), p.270-270
Main Authors: Ouattassi, Naouar, Benmansour, Najib, Ridal, Mohammed, Zaki, Zouheir, Bendahhou, Karima, Nejjari, Chakib, Cherkaoui, Abdeljabbar, El Alami, Mohammed Nouredine El Amine
Format: Article
Language:English
Subjects:
Acoustics
Aged
Algorithms
Case-Control Studies
erygmophonic speech
formants
Humans
Laryngectomy - rehabilitation
Male
Middle Aged
Morocco
perturbation analysis method
Prospective Studies
Reproducibility of Results
spectrogram
Speech, Alaryngeal
Voice Quality
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Summary:Acoustic evaluation of alaryngeal voices is among the most prominent issues in speech analysis field. In fact, many methods have been developed to date to substitute the classic perceptual evaluation. The Aim of this study is to present our experience in erygmophonic speech objective assessment and to discuss the most widely used methods of acoustic speech appraisal. through a prospective case-control study we have measured acoustic parameters of speech quality during one year of erygmophonic rehabilitation therapy of Moroccan laryngectomized patients. We have assessed acoustic parameters of erygmophonic speech samples of eleven laryngectomized patients through the speech rehabilitation therapy. Acoustic parameters were obtained by perturbation analysis method and linear predictive coding algorithms also through the broadband spectrogram. Using perturbation analysis methods, we have found erygmophonic voice to be significantly poorer than normal speech and it exhibits higher formant frequency values. However, erygmophonic voice shows also higher and extremely variable Error values that were greater than the acceptable level. And thus, live a doubt on the reliability of those analytic methods results. Acoustic parameters for objective evaluation of alaryngeal voices should allow a reliable representation of the perceptual evaluation of the quality of speech. This requirement has not been fulfilled by the common methods used so far. Therefore, acoustical assessment of erygmophonic speech needs more investigations.
ISSN:1937-8688
1937-8688
DOI:10.11604/pamj.2015.21.270.4301