Cargando…
Speech Signal Analysis and Pattern Recognition in Diagnosis of Dysarthria
BACKGROUND: Dysarthria refers to a group of disorders resulting from disturbances in muscular control over the speech mechanism due to damage of central or peripheral nervous system. There is wide subjective variability in assessment of dysarthria between different clinicians. In our study, we tried...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5682737/ https://www.ncbi.nlm.nih.gov/pubmed/29184336 http://dx.doi.org/10.4103/aian.AIAN_130_17 |
_version_ | 1783278158749892608 |
---|---|
author | Thoppil, Minu George Kumar, C. Santhosh Kumar, Anand Amose, John |
author_facet | Thoppil, Minu George Kumar, C. Santhosh Kumar, Anand Amose, John |
author_sort | Thoppil, Minu George |
collection | PubMed |
description | BACKGROUND: Dysarthria refers to a group of disorders resulting from disturbances in muscular control over the speech mechanism due to damage of central or peripheral nervous system. There is wide subjective variability in assessment of dysarthria between different clinicians. In our study, we tried to identify a pattern among types of dysarthria by acoustic analysis and to prevent intersubject variability. OBJECTIVES: (1) Pattern recognition among types of dysarthria with software tool and to compare with normal subjects. (2) To assess the severity of dysarthria with software tool. MATERIALS AND METHODS: Speech of seventy subjects were recorded, both normal subjects and the dysarthric patients who attended the outpatient department/admitted in AIMS. Speech waveforms were analyzed using Praat and MATHLAB toolkit. The pitch contour, formant variation, and speech duration of the extracted graphs were analyzed. RESULTS: Study population included 25 normal subjects and 45 dysarthric patients. Dysarthric subjects included 24 patients with extrapyramidal dysarthria, 14 cases of spastic dysarthria, and 7 cases of ataxic dysarthria. Analysis of pitch of the study population showed a specific pattern in each type. F0 jitter was found in spastic dysarthria, pitch break with ataxic dysarthria, and pitch monotonicity with extrapyramidal dysarthria. By pattern recognition, we identified 19 cases in which one or more recognized patterns coexisted. There was a significant correlation between the severity of dysarthria and formant range. CONCLUSIONS: Specific patterns were identified for types of dysarthria so that this software tool will help clinicians to identify the types of dysarthria in a better way and could prevent intersubject variability. We also assessed the severity of dysarthria by formant range. Mixed dysarthria can be more common than clinically expected. |
format | Online Article Text |
id | pubmed-5682737 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-56827372017-11-28 Speech Signal Analysis and Pattern Recognition in Diagnosis of Dysarthria Thoppil, Minu George Kumar, C. Santhosh Kumar, Anand Amose, John Ann Indian Acad Neurol Original Article BACKGROUND: Dysarthria refers to a group of disorders resulting from disturbances in muscular control over the speech mechanism due to damage of central or peripheral nervous system. There is wide subjective variability in assessment of dysarthria between different clinicians. In our study, we tried to identify a pattern among types of dysarthria by acoustic analysis and to prevent intersubject variability. OBJECTIVES: (1) Pattern recognition among types of dysarthria with software tool and to compare with normal subjects. (2) To assess the severity of dysarthria with software tool. MATERIALS AND METHODS: Speech of seventy subjects were recorded, both normal subjects and the dysarthric patients who attended the outpatient department/admitted in AIMS. Speech waveforms were analyzed using Praat and MATHLAB toolkit. The pitch contour, formant variation, and speech duration of the extracted graphs were analyzed. RESULTS: Study population included 25 normal subjects and 45 dysarthric patients. Dysarthric subjects included 24 patients with extrapyramidal dysarthria, 14 cases of spastic dysarthria, and 7 cases of ataxic dysarthria. Analysis of pitch of the study population showed a specific pattern in each type. F0 jitter was found in spastic dysarthria, pitch break with ataxic dysarthria, and pitch monotonicity with extrapyramidal dysarthria. By pattern recognition, we identified 19 cases in which one or more recognized patterns coexisted. There was a significant correlation between the severity of dysarthria and formant range. CONCLUSIONS: Specific patterns were identified for types of dysarthria so that this software tool will help clinicians to identify the types of dysarthria in a better way and could prevent intersubject variability. We also assessed the severity of dysarthria by formant range. Mixed dysarthria can be more common than clinically expected. Medknow Publications & Media Pvt Ltd 2017 /pmc/articles/PMC5682737/ /pubmed/29184336 http://dx.doi.org/10.4103/aian.AIAN_130_17 Text en Copyright: © 2006 - 2017 Annals of Indian Academy of Neurology http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms. |
spellingShingle | Original Article Thoppil, Minu George Kumar, C. Santhosh Kumar, Anand Amose, John Speech Signal Analysis and Pattern Recognition in Diagnosis of Dysarthria |
title | Speech Signal Analysis and Pattern Recognition in Diagnosis of Dysarthria |
title_full | Speech Signal Analysis and Pattern Recognition in Diagnosis of Dysarthria |
title_fullStr | Speech Signal Analysis and Pattern Recognition in Diagnosis of Dysarthria |
title_full_unstemmed | Speech Signal Analysis and Pattern Recognition in Diagnosis of Dysarthria |
title_short | Speech Signal Analysis and Pattern Recognition in Diagnosis of Dysarthria |
title_sort | speech signal analysis and pattern recognition in diagnosis of dysarthria |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5682737/ https://www.ncbi.nlm.nih.gov/pubmed/29184336 http://dx.doi.org/10.4103/aian.AIAN_130_17 |
work_keys_str_mv | AT thoppilminugeorge speechsignalanalysisandpatternrecognitionindiagnosisofdysarthria AT kumarcsanthosh speechsignalanalysisandpatternrecognitionindiagnosisofdysarthria AT kumaranand speechsignalanalysisandpatternrecognitionindiagnosisofdysarthria AT amosejohn speechsignalanalysisandpatternrecognitionindiagnosisofdysarthria |