scholarly journals Efectos de la terapia de Tracto Vocal Semi-Ocluido sobre los parámetros acústicos de la voz en docentes-Effects of the semi-occluded vocal tract therapy on acoustic parameters of the voice teachers

2016 ◽  
Vol 6 (2) ◽  
Author(s):  
Karina Vásquez Burgos ◽  
María Pilar Retamal Sandoval ◽  
Yessenia Zapata Urrutia
Keyword(s):  
Vocal Tract ◽  
Acoustic Parameters ◽  
Voice Teachers ◽  
The Voice

El objetivo de esta investigación es analizar el efecto de la terapia de Tracto Vocal semi-ocluido, sobre los parámetros acústicos de la voz en docentes de educación básica de la comuna de Chillán. La presente investigación se sitúa en la población de docentes, principal grupo de profesionales que requieren usar su voz por períodos prolongados; por lo que están más expuestos a padecer desórdenes vocales. Esta investigación propone la terapia de Tracto Vocal semi-ocluido, ya que según autores como Guzmán, Titze, Belhau entre otros, ofrece resultados inmediatos manteniendo los parámetros acústicos tono e intensidad, permitiendo que se mantenga la calidad de la voz, evitando así padecer disfonías. Es entonces, la fonoaudiología la encargada de aplicar ejercicios de calentamiento y enfriamiento vocal, con el fin de evitar efectos negativos en los parámetros acústicos tono e intensidad. Metodológicamente, la investigación se orienta al paradigma cuantitativo, de tipo descriptiva y comparativa. En relación al diseño es de tipo cuasiexperimental y longitudinal. Para este efecto se midieron los parámetros acústicos de la voz utilizando el programa de análisis acústico de la voz Praat, en un grupo experimental y control. Respecto a los resultados obtenidos se evidenciaron efectos positivos sobre los parámetros acústicos de la voz, probando así la efectividad de la terapia de tracto vocal semi-ocluido.

scholarly journals Efectos de la terapia de Tracto Vocal Semi-Ocluido sobre los parámetros acústicos de la voz en docentes-Effects of the semi-occluded vocal tract therapy on acoustic parameters of the voice teachers

2016 ◽  
Vol 6 (2) ◽  
Author(s):  
Karina Vásquez Burgos ◽  
María Pilar Retamal Sandoval ◽  
Yessenia Zapata Urrutia
Keyword(s):  
Vocal Tract ◽  
Acoustic Parameters ◽  
Voice Teachers ◽  
The Voice

El objetivo de esta investigación es analizar el efecto de la terapia de Tracto Vocal semi-ocluido, sobre los parámetros acústicos de la voz en docentes de educación básica de la comuna de Chillán. La presente investigación se sitúa en la población de docentes, principal grupo de profesionales que requieren usar su voz por períodos prolongados; por lo que están más expuestos a padecer desórdenes vocales. Esta investigación propone la terapia de Tracto Vocal semi-ocluido, ya que según autores como Guzmán, Titze, Belhau entre otros, ofrece resultados inmediatos manteniendo los parámetros acústicos tono e intensidad, permitiendo que se mantenga la calidad de la voz, evitando así padecer disfonías. Es entonces, la fonoaudiología la encargada de aplicar ejercicios de calentamiento y enfriamiento vocal, con el fin de evitar efectos negativos en los parámetros acústicos tono e intensidad. Metodológicamente, la investigación se orienta al paradigma cuantitativo, de tipo descriptiva y comparativa. En relación al diseño es de tipo cuasiexperimental y longitudinal. Para este efecto se midieron los parámetros acústicos de la voz utilizando el programa de análisis acústico de la voz Praat, en un grupo experimental y control. Respecto a los resultados obtenidos se evidenciaron efectos positivos sobre los parámetros acústicos de la voz, probando así la efectividad de la terapia de tracto vocal semi-ocluido.

scholarly journals Spectrographic analysis of the effect of vocal warm-up on the voice of choir girls

2014 ◽  
Vol 19 (4) ◽  
pp. 380-386 ◽  
Author(s):  
Lília Maria Gomes Falcão ◽  
Maria Lúcia Vaz Masson ◽  
Gisele Oliveira ◽  
Mara Behlau
Keyword(s):  
Experimental Study ◽  
Vocal Tract ◽  
Spectrographic Analysis ◽  
Acoustic Parameters ◽  
Warm Up ◽  
High Frequencies ◽  
Acoustic Spectrum ◽  
Children's Choir ◽  
Before And After ◽  
The Voice

Purpose To analyse the immediate effect of a vocal warm-up program on children that sang in a choir by means of spectrographic analysis. Methods Experimental study consisting of 14 girls from an amateur children’s choir, aged 9 to 12 years. Acoustic spectrographic analyses were performed before and after a specific vocal warm-up program, consisting of a hierarchical sequence of body exercises, respiratory and articulation training, vocal exercises, ascending and descending musical scales and facilitating sounds. The speech material for spectrographic analysis was the sustained /Ɛ:/ vowel, pre and post warm-up program. The selected acoustic parameters were instability of trace, noise at low and high frequencies, frequency bifurcation, harmonics series, presence of a hard vocal attack, pitch and voice breaks, and mean fundamental frequency. Results No significant differences were found regarding the effect of the vocal warm-up when pre and post data were compared. However, there was a negative correlation between the level of harmonics and noise in the high frequencies post warm-up. Conclusion The vocal warm-up program implemented for children that sang in choirs produced a richer acoustic spectrum that may indicate enhanced glottic closure or vocal tract adjustment.

scholarly journals Multidimensional acoustic analysis of pathological voice

2009 ◽  
Vol 137 (5-6) ◽  
pp. 234-238
Author(s):  
Mirjana Petrovic-Lazic ◽  
Snezana Babac ◽  
Zoran Ivankovic ◽  
Rade Kosanovic
Keyword(s):  
Vocal Fold ◽  
Acoustic Analysis ◽  
Control Group ◽  
Acoustic Parameters ◽  
Vocal Rehabilitation ◽  
Voice Treatment ◽  
Before And After ◽  
The Voice ◽  
Vocal Fold Nodules ◽  
Pathological Voice

Introduction. There are subjective and objective ways to examine the effects of vocal therapy in voice disorders. The most precise and objective check-up is the use of computer voice analysis. Objective. The aim of the research was to perform a detailed analysis of acoustic structure of the vowel A before and after voice treatment in patients with vocal fold nodules in order to obtain objective verification of the vocal rehabilitation success. Methods. We examined 30 female patients, aged 34.6?6.69 years, with vocal fold nodules. Acoustic parameters of voice were compared with the control group consisting of 21 subjects without voice pathology. In all persons the vowel A was recorded and analyzed before and after a month of vocal therapy. The success of the vocal therapy was tracked using computer analysis of vocal structure. Signal, noise and tremor parameters were processed. Results. Of the analyzed vowel A parameters: STD, PER, JITA, JITT, RAP, vFO, ShdB, SHIM, APQ, VTI, SPI, F0, NHR, FTRI, eleven improved (p<0.05 and p<0.01). Three parameters (F0, NHR, FTRI) changed showing improvement, but the obtained differences were not statistically significant (p>0.05). Conclusion. Based on the obtained results it was concluded that vocal therapy gave satisfactory results, but that it should be continually applied until full stabilization of the voice.

scholarly journals Dynamics of acoustic voice parameters in patients after antireflux surgery

2020 ◽  
Vol 19 (4) ◽  
pp. 34-38
Author(s):  
G. A. Dudaity ◽  
◽  
L. V. Georgieva ◽  
Keyword(s):  
Antireflux Surgery ◽  
Respiratory Diseases ◽  
Ph Monitoring ◽  
Control Group ◽  
Acoustic Parameters ◽  
Voice Analysis ◽  
Before And After ◽  
Upper Respiratory ◽  
The Voice ◽  
Late Postoperative Period

The article is devoted to the influence of pharyngolaryngeal reflux on the voice acoustic parameters in patients before and after the antireflux surgery (fundoplication). The study involved 12 patients aged 33 to 64 years with a confirmed impedance–pH monitoring diagnosis of gastroesophageal reflux disease. The control group included 10 patients aged 18 to 33 years. These subjects did not have any upper respiratory diseases (including pharyngolaryngeal reflux) and gastrointestinal tract diseases. Computer voice analysis was used to objectively evaluate the voice acoustic parameters. In patients before fundoplication, a statistically significant increase in Jitter and Shimmer parameters was observed in 100% of cases compared with the control group (p ≤ 0,05). In the late postoperative period, 6 months after surgery, the analysis of acoustic parameters of voice in the study group revealed: Jitter and Shimmer indicators in 100% of cases significantly decreased compared to the preoperative values (p ≤ 0,05), which indicates an improvement in voice function. Jitter and Shimmer were the most diagnostically significant parameters.

Structure and Function of the Singing Voice

2015 ◽  
pp. 2-30
Author(s):  
Gillyanne Kayes
Keyword(s):  
Developmental Stages ◽  
Vocal Tract ◽  
Singing Voice ◽  
Hormonal Change ◽  
Research Knowledge ◽  
Vocal Function ◽  
And Function ◽  
The Impact ◽  
The Voice ◽  
Structural Aspects

Key structural aspects of the vocal mechanism and the physiology of vocal function are presented and discussed in relation to the singing voice. Details of anatomical structure and physiological function are given for the regions of the vocal tract and respiratory system under the broad headings of respiration, phonation (the larynx), and resonation. Use of voice in singing is examined in terms of breath use, control of pitch, and loudness, and shaping of resonance for change of timbre. Key developmental stages during the lifecycle are given, including infancy, childhood, voice mutation in adolescence, and the impact of hormonal change on the voice. Differences between the genders in adulthood are discussed in the light of current research knowledge of voice.

Phonetics of Singing in Western Classical Style

2018 ◽  
Author(s):  
Johan Sundberg
Keyword(s):  
Fundamental Frequency ◽  
Vocal Fold ◽  
Vocal Tract ◽  
Formant Frequency ◽  
Vowel Identification ◽  
Fundamental Frequencies ◽  
Vocal Fold Vibration ◽  
Syllable Duration ◽  
Classical Singing ◽  
The Voice

The function of the voice organ is basically the same in classical singing as in speech. However, loud orchestral accompaniment has necessitated the use of the voice in an economical way. As a consequence, the vowel sounds tend to deviate considerably from those in speech. Male voices cluster formant three, four, and five, so that a marked peak is produced in spectrum envelope near 3,000 Hz. This helps them to get heard through a loud orchestral accompaniment. They seem to achieve this effect by widening the lower pharynx, which makes the vowels more centralized than in speech. Singers often sing at fundamental frequencies higher than the normal first formant frequency of the vowel in the lyrics. In such cases they raise the first formant frequency so that it gets somewhat higher than the fundamental frequency. This is achieved by reducing the degree of vocal tract constriction or by widening the lip and jaw openings, constricting the vocal tract in the pharyngeal end and widening it in the mouth. These deviations from speech cause difficulties in vowel identification, particularly at high fundamental frequencies. Actually, vowel identification is almost impossible above 700 Hz (pitch F5). Another great difference between vocal sound produced in speech and the classical singing tradition concerns female voices, which need to reduce the timbral differences between voice registers. Females normally speak in modal or chest register, and the transition to falsetto tends to happen somewhere above 350 Hz. The great timbral differences between these registers are avoided by establishing control over the register function, that is, over the vocal fold vibration characteristics, so that seamless transitions are achieved. In many other respects, there are more or less close similarities between speech and singing. Thus, marking phrase structure, emphasizing important events, and emotional coloring are common principles, which may make vocal artists deviate considerably from the score’s nominal description of fundamental frequency and syllable duration.

scholarly journals Whistling shares a common tongue with speech: bioacoustics from real-time MRI of the human vocal tract

2019 ◽  
Vol 286 (1911) ◽  
pp. 20191116
Author(s):  
Michel Belyk ◽  
Benjamin G. Schultz ◽  
Joao Correia ◽  
Deryk S. Beal ◽  
Sonja A. Kotz
Keyword(s):  
Real Time ◽  
Vocal Tract ◽  
Strong Association ◽  
Resonance Imaging ◽  
Human Communication ◽  
Cultural Meanings ◽  
Vowel Production ◽  
Wide Range ◽  
The Voice

Most human communication is carried by modulations of the voice. However, a wide range of cultures has developed alternative forms of communication that make use of a whistled sound source. For example, whistling is used as a highly salient signal for capturing attention, and can have iconic cultural meanings such as the catcall, enact a formal code as in boatswain's calls or stand as a proxy for speech in whistled languages. We used real-time magnetic resonance imaging to examine the muscular control of whistling to describe a strong association between the shape of the tongue and the whistled frequency. This bioacoustic profile parallels the use of the tongue in vowel production. This is consistent with the role of whistled languages as proxies for spoken languages, in which one of the acoustical features of speech sounds is substituted with a frequency-modulated whistle. Furthermore, previous evidence that non-human apes may be capable of learning to whistle from humans suggests that these animals may have similar sensorimotor abilities to those that are used to support speech in humans.

scholarly journals Fundamental frequency, phonation maximum time and vocal complaints in morbidly obese women

2014 ◽  
Vol 27 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Lourdes Bernadete Rocha de SOUZA ◽  
Rayane Medeiros PEREIRA ◽  
Marquiony Marques dos SANTOS ◽  
Cynthia Meida de Almeida GODOY
Keyword(s):  
Fundamental Frequency ◽  
Vocal Tract ◽  
Control Group ◽  
Morbidly Obese ◽  
Obese Women ◽  
Obese People ◽  
Maximum Phonation Time ◽  
Significant Difference ◽  
The Voice ◽  
Voice Recording

Background : Obese people have abnormal deposition of fat in the vocal tract that can interfere with the acoustic voice. Aim : To relate the fundamental frequency, the maximum phonation time and voice complaints from a group of morbidly obese women. Methods : Observational, cross-sectional and descriptive study that included 44 morbidly obese women, mean age of 42.45 (±10.31) years old, observational group and 30 women without obesity, control group, with 33.79 (±4.51)years old. The voice recording was done in a quiet environment, on a laptop using the program ANAGRAF acoustic analysis of speech sounds. To extract the values of fundamental frequency the subjects were asked to produce vowel [a] at usual intensity for a period in average of three seconds. After the voice recording, participants were prompted to produce sustained vowel [ a] , [ i] and [ u] at usual intensity and height, using a stopwatch to measure the time that each participant could hold each vowel. Results : The majority, 31(70.5%), had vocal complaints, with a higher percentage for complaints of vocal fatigue 20(64.51%) and voice failures 19(61.29%) followed by dryness of the throat in 15 (48.38%) and effort to speak 13(41.93%). There was no statistically significant difference regarding the mean fundamental frequency of the voice in both groups, but there was significance between the two groups regarding maximum phonation. Conclusion : Increased adipose tissue in the vocal tract interfered in the vocal parameters.

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