Fundamental frequency and duration from spaniard vowels in patients with Parkinson disease
DOI:
https://doi.org/10.46502/issn.2710-995X/2023.10.01Keywords:
acoustic analysis, fundamental frequency, Parkinson disease, vowel durationAbstract
Parkinson's disease is clinically characterized by the classic triad: tremor, rigidity and hypokinesia. Voice and speech disorders affect 60-80% of patients and have been described as "hypokinetic dysarthria". The objective of this paper is to show the behavior of the Fundamental Frequency or Pitch and the duration in vowel pronunciation in Parkinson Disease patients in reading tasks. Patients with idiopathic Parkinson Disease affected from 5 years or more diagnosed according to the criteria from United Kingdom Parkinson’s Disease Society Brain Bank were studied. An acoustic method was applied to 14 cases (7 patients and 7 controls). Three acoustic tests (I, II y III) were carried out with reading tasks from pronunciation of Spaniard vowels without interruption, with pause and using vowels within words in normal phonetic position, respectively. Acoustic tests were processed using Anavoz 1.0 software, obtaining the Fundamental Frequency (Simple Inverse Filter Tracking algorithm) and the vowel duration. About the results an increase of the Fundamental Frequency was obtained in vowel pronunciation by the patients. In tests I, II and III the alterations of Pitch values was about 80%, 57% and 42% from these patients, respectively. The Control cases registered normal Pitch values according sex and age. The Duration corresponded with the nature of the tests and patients pathological conditions. A remarkable increase of Fundamental Frequency values was showed in vowel pronunciations from male patients. Very useful are reading tasks and acoustic method applied in order to obtain the Fundamental Frequency and duration of phonations. Phonetic, phonologic and articulatory aspects from tasks and tests are very important to study Fundamental Frequency behavior, as well as duration attributes from phonemes, words, etc. in these patients. Improvement on experiment, methods and tools will give more information in order to study the Fundamental Frequency behavior and vowel duration in Parkinson Disease patients.
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Copyright (c) 2024 Daniel Isac Escobedo Beceiro, Osvaldo Ramón Aguilera Pacheco, Frank Sanabria Macias, Elizabet Colina Avila
This work is licensed under a Creative Commons Attribution 4.0 International License.
