Jonathan Delgado Hernández

Jonathan Delgado Hernández
Universidad de La Laguna | ULL · Department of Developmental and Educational Psychology

Speech and Language Therapist

About

34
Publications
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163
Citations
Additional affiliations
January 2007 - present
CREN Salud
Position
  • Speech therapist

Publications

Publications (34)
Article
Full-text available
El objetivo de este trabajo es estudiar el tiempo de inicio de la sonoridad (VOT) y la velocidad de las transiciones en diptongos a través de las pendientes del F2 en la disartria atáxica, además de examinar la relación entre estas dos medidas acústicas y la severidad de las alteraciones motoras del habla. Los resultados muestran valores de VOT má...
Article
Introducción y objetivos. En los últimos años se ha incrementado el uso de medidas cepstrales para la evaluación acústica de la voz. Uno de los parámetros más investigados es la Prominencia del Pico Cepstral Suavizado (CPPs). Los objetivos de este trabajo son conocer la utilidad de esta medida acústica en la evaluación objetiva de las alteraciones...
Article
Full-text available
El análisis acústico es una herramienta que proporciona información objetiva sobre la voz. En los últimos años, medidas del espectro medio a largo plazo (LTAS) y cepstrales, como la prominencia del pico cepstral suavizado (CPPs), han complementado a las medidas utilizadas tradicionalmente, demostrando en multitud de estudios una alta correlación co...
Article
Summary: Objective. The aim of this study was to validate the Acoustic Voice Quality Index version 03.01 (AVQIv3) and the Acoustic Breathiness Index (ABI) in the Spanish language. Method: Concatenated voice samples of continuous speech (cs) and sustained vowel (sv) [a:] from 136 subjects with dysphonia and 47 vocally healthy subjects were perceptua...
Article
Full-text available
Background The evaluation of voice quality with acoustic measurements is useful to objectify the diagnostic process. Particularly, breathiness was highly evaluated and the Acoustic Breathiness Index (ABI) might have promising features. Objective of review The goal of the present meta‐analysis is to quantify, from existing cross‐validation studies,...
Article
Background One of the symptoms reported by patients with thyroid pathology are the changes in voice. The percentages of vocal alterations found in the literature vary between 16.7% and 68%. Such variability can be explained by different assessment methods used and their reliability. Objective The goal of this study is to analyze the voice in patie...
Article
Full-text available
Los parámetros derivados de la métrica cepstral son cada vez más utilizados en la evaluación acústica de la voz, ya sea como medidas únicas o como parte de índices multivariados. El pico cepstral de mayor prominencia en el cepstrum suavizado (CPPS) ha demostrado en multitud de estudios ser la única medida acústica con la suficiente validez concurre...
Article
ABSTRACT Introduction and objectives. In recent years, the use of cepstral measures for acoustic evaluation of voice has been increased. One of the parameters most investigated is the Smoothed Cepstral Peak Prominence (CPPs). The objectives of this work are to know the usefulness of this acoustic measure in the objective evaluation of the alterati...
Article
Full-text available
Introduction. The acoustic analysis is a tool that provides objective data on changes of speech in dysarthria. Aim. To evaluate, in the ataxic dysarthria, the relationship between the vowel space area (VSA), the formant centralization ratio (FCR) and the mean of the primary distances with the speech intelligibility. Subjects and methods. A sample o...
Article
Introduction: The acoustic analysis is a tool that provides objective data on changes of speech in dysarthria. Aim: To evaluate, in the ataxic dysarthria, the relationship between the vowel space area (VSA), the formant centralization ratio (FCR) and the mean of the primary distances with the speech intelligibility. Subjects and methods: A sam...
Article
Full-text available
Acoustic analysis is a tool that provides objective information about the voice. In recent years, long-term average spectrum (LTAS) and cepstral measurements, such as the smoothed cepstral peak prominence (CPPs), have complemented the traditional measures, demonstrating in many studies a high correlation with the degree of severity of dysphonia. Th...
Article
The objective of this work is to study the voice onset time (VOT) and the speed of transitions in diphthongs through the slopes of F2 in ataxic dysarthria, in addition to examining the relationship between these two acoustic measurements and severity of motor speech disorders. The results show higher VOT and greater variability and slower transitio...
Article
Full-text available
El Parkinson es una enfermedad neurodegenerativa que presenta manifestaciones clínicas motoras y no motoras. Las alteraciones de la voz aparecen con frecuencia en etapas tempranas, antes que las complicaciones motoras propias de la enfermedad. Este trabajo estudia la eficacia de la rehabilitación logopédica en las alteraciones de la voz de un pacie...
Article
Full-text available
Transitions represent the vocal tract movement of the articulatory configuration from the consonant to the vowel. The acoustic analysis of the velocity of these transitions in the second-formant is a procedure used in the evaluation and investigation of dysarthric speech as it provides information on the movements of the tongue in the joint. The ai...
Article
Full-text available
ABSTRACT: Parkinson's is a neurodegenerative disease with motor and non-motor clinical manifestations. The voice disorders often appear early, before their own motor complications of the disease. This paper presents the efficacy of voice therapy of a patient with Parkinson's disease without motor symptoms through acoustic-perceptive analysis. It al...
Chapter
Full-text available
El objetivo de este trabajo es conocer la repercusión que tiene en el habla la Atrofia Olivo-Ponto-Cerebral (AOPC). La medida de la inteligibilidad del habla nos permite obtener un índice de gravedad de esta patología. Además, nos proporciona la posibilidad de la comparación entre pacientes y es una herramienta útil para un correcto seguimiento de...
Article
Full-text available
The Long Term Average Speech Spectrum is a measure of the acoustic characteristics of speech trough spectrographic analysis. The LTASS has various applications in clinic audiology such as the intelligibility of speech, the prescription of gain in hearing aids and the determination of aims in the audiological intervention. In the present study we ob...
Conference Paper
Auditory steady-state responses (ASSRs) can be an alternative method for objective threshold estimation. This study examines the relationship between auditory steady-state responses threshold and click- evoked auditory brainstem responses (c-ABRs) with the pure tone audiogram and the speech reception thresholds in 31 adult subjects with a sensorine...
Conference Paper
Hearing aid selection and fitting in infants and non cooperative subjects have been difficulty provided in audiology. Selection and fitting of electroacoustic characterisc of hearing aids need measures of loudness but these measures are normally subjective judgments. This methods have limitations when used on pediatric population or uncooperative p...
Conference Paper
In a previous study we demonstrated the usefulness of multiple auditory steady state response (MSSR) audiometry, in moderate to severe hearing losses with relatively flat audiometric configurations. Here we examine the accuracy of the technique in mild and moderate sensorineural hearing losses with different audiometric configurations. Thirty two h...
Conference Paper
Subjective judgments of loudness play an important role in the selection and fitting of the electroacoustic characteristics of hearing aids such as the maximum output or the compression ratio. There are several psychoacoustics methods for listener to scale the perceived magnitude of loudness at discrete stimulus levels. This method, however, have l...
Article
Full-text available
Este artículo es el primero de una serie de estudios que tienen por objeto describir las características de los Potenciales Evocados Auditivos del Tronco Cerebral (PEATC) tanto en sujetos normoyentes como hipoacúsicos. En la interpretación de estos registros electrofisiológicos es necesario conocer los valores de normalidad de la latencia y amplitu...
Article
Full-text available
Una de las metas a lograr en el campo clínico de la audioprótesis es alcanzar un nivel de escucha del habla cómodo e inteligible. Para lograr este objetivo se han creado señales de referencia basadas en el promedio del espectro del habla con las que poder evaluar la ganancia del los audífonos. El sexo, la edad, la localización del micrófono o la le...

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Projects

Projects (6)
Project
- Determinar qué parámetros acústicos del habla y de la voz son clínicamente relevantes en la valoración de la EM. - Analizar los resultados de la valoración acústica en la esclerosis múltiple y comparar los resultados con un grupo control, así como analizar la comparación entre EMRR y EMSP. - Analizar la relación entre la valoraciones acústicas y el EDSS.
Project
Efecto de la intensidad de la rehabilitación logopedica en la afasia motora crónica
Project
Síndrome de Wolf-Hirschhorn: Intervención en el habla y el lenguaje