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Analysis of multiple types of voice recordings in cepstral domain using MFCC for discriminating between patients with Parkinson’s disease and healthy people

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Abstract

In this study, we wanted to discriminate between two groups of people. The database used in this study contains 20 patients with Parkinson’s disease (PD) and 20 healthy people. Three types of sustained vowels (/a/, /o/ and /u/) were recorded from each participant and then the analyses were done on these voice samples. The technique used in this study is to extract voiceprint from each voice samples by using mel frequency cepstral coefficients (MFCCs). The extracted MFCC were compressed by calculating their average value in order to extract the voiceprint from each voice recording. Subsequently, a classification method was performed using leave one subject out (LOSO) validation scheme along with support vector machines (SVMs). We also used an independent test to validate our results by using another database which contains 28 PD patients. Based on the research result, the best obtained classification accuracy using LOSO on the first dataset was 82.50 % using MLP kernel of SVM on sustained vowel /u/. And the maximum classification accuracy using the independent test was 100 % using sustained vowel /a/ with polynomial kernel of the SVM and with MLP kernel of the SVM. This result was also achieved using sustained vowel /o/ with polynomial kernel of the SVM.

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Acknowledgments

The authors would like to thank Mr. Erdem Isenkul from Department of Computer Engineering at Istanbul University, Mr. Thomas R. Przybeck and Mr. Daniel Wood from United States Peace Corps Volunteers (Morocco 2013–2015), and all of the participants involved in the dataset collection process.

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Authors and Affiliations

  1. Research Laboratory in Electrical Engineering LRGE, Research Team in Computer and Telecommunication ERIT, ENSET, Mohammed V University in Rabat, Rabat, Morocco

    Achraf Benba, Abdelilah Jilbab & Ahmed Hammouch

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  1. Achraf Benba
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  2. Abdelilah Jilbab
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  3. Ahmed Hammouch
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Correspondence to Achraf Benba.

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Achraf Benba declares that he has no conflict of interest. And he doesn’t have any financial relationship with the organization. Abdelilah Jilbab declares that he has no conflict of interest. And he doesn’t have any financial relationship with the organization. Ahmed Hammouch declares that he has no conflict of interest. And he doesn’t have any financial relationship with the organization. All procedures followed were in accordance with the ethical standards of the Responsible Committee on Human Experimentation (Institutional and National) and with the Helsinki Declaration of 1975, as revised in 2008 (5).

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Benba, A., Jilbab, A. & Hammouch, A. Analysis of multiple types of voice recordings in cepstral domain using MFCC for discriminating between patients with Parkinson’s disease and healthy people. Int J Speech Technol 19, 449–456 (2016). https://doi.org/10.1007/s10772-016-9338-4

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  • DOI: https://doi.org/10.1007/s10772-016-9338-4

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