Upper high notes: auditory-perceptual analysis of voice and self-reporting among professional sopranos. / Superagudos: análise perceptivo-auditiva da voz e autorrelato em sopranos profissionais.

PURPOSE: To describe the emission of upper high notes by professional sopranos by means of the auditory-perceptual evaluation of the singers' voices and self-reports. METHODS: Five professional sopranos performed an excerpt from a Bellini opera which involved the emission of an upper high note. The auditory-perceptual evaluation was carried out by three speech-language therapists and three singing teachers, who considered brightness, loudness, metal quality, vibrato, breathiness, and resonance on a visual-analytical scale, based on each singer's emission of high notes. After the recording, the singers were asked to answer a proprioceptive questionnaire on the physical sensations that they had as they emitted upper high notes. An inferential analysis of the data from the auditory-perceptual evaluation was conducted, and the singers' self-reports were summarized and then orthographically transcribed. RESULTS: In the auditory-perceptual analysis, the emission of upper high notes was characterized according to the presence of brightness, loudness, metal quality, vibrato, and anterior resonance, as perceived by speech-language therapists and singing teachers. In the proprioceptive report, all singers reported laryngeal elevation and a need to use respiratory support in order to emit upper high notes. CONCLUSION: Upper high notes are characterized by a bright vocal emission, enhanced loudness, with a metallic quality and vibrato, little or no breathiness, accompanied by a sensation of laryngeal elevation and a need for respiratory support.

OBJETIVO: Descrever a emissão de superagudos em sopranos profissionais por meio da avaliação perceptivo-auditiva da voz e do autorrelato das cantoras. MÉTODO: Cinco sopranos profissionais executaram o trecho de uma ópera de Bellini no qual havia a emissão de uma nota superaguda. A avaliação perceptivo-auditiva foi realizada por seis avaliadores (três fonoaudiólogos e três professores de canto) que consideraram brilho, loudness, metal, vibrato, soprosidade e ressonância em uma escala visual-analítica, tendo como base a emissão aguda de cada uma das cantoras. Após a gravação, as cantoras responderam a um questionário proprioceptivo sobre as sensações físicas durante a produção dos superagudos. Foi realizada uma análise inferencial dos dados da avaliação perceptivo-auditiva e transcrição ortográfica resumida do autorrelato das cantoras. RESULTADOS: Na análise perceptivo-auditiva, a emissão superaguda foi caracterizada por presença de brilho, loudness, metal, vibrato e ressonância anteriorizada percebida por fonoaudiólogos e professores de canto. No relato proprioceptivo, todas as cantoras referiram elevação de laringe e necessidade de utilização do apoio respiratório para emitir a nota superaguda. CONCLUSÃO: Os superagudos foram caracterizados por uma emissão vocal brilhante, loudness aumentada, metálica, com vibrato, com pouca ou nenhuma soprosidade, com sensação de elevação da laringe e necessidade de apoio respiratório.

Superagudos: análise perceptivo-auditiva da voz e autorrelato em sopranos profissionais / Upper high notes: auditory-perceptual analysis of voice and self-reporting among professional sopranos

RESUMO Objetivo Descrever a emissão de superagudos em sopranos profissionais por meio da avaliação perceptivo-auditiva da voz e do autorrelato das cantoras. Método Cinco sopranos profissionais executaram o trecho de uma ópera de Bellini no qual havia a emissão de uma nota superaguda. A avaliação perceptivo-auditiva foi realizada por seis avaliadores (três fonoaudiólogos e três professores de canto) que consideraram brilho, loudness, metal, vibrato, soprosidade e ressonância em uma escala visual-analítica, tendo como base a emissão aguda de cada uma das cantoras. Após a gravação, as cantoras responderam a um questionário proprioceptivo sobre as sensações físicas durante a produção dos superagudos. Foi realizada uma análise inferencial dos dados da avaliação perceptivo-auditiva e transcrição ortográfica resumida do autorrelato das cantoras. Resultados Na análise perceptivo-auditiva, a emissão superaguda foi caracterizada por presença de brilho, loudness, metal, vibrato e ressonância anteriorizada percebida por fonoaudiólogos e professores de canto. No relato proprioceptivo, todas as cantoras referiram elevação de laringe e necessidade de utilização do apoio respiratório para emitir a nota superaguda. Conclusão Os superagudos foram caracterizados por uma emissão vocal brilhante, loudness aumentada, metálica, com vibrato, com pouca ou nenhuma soprosidade, com sensação de elevação da laringe e necessidade de apoio respiratório.

ABSTRACT Purpose To describe the emission of upper high notes by professional sopranos by means of the auditory-perceptual evaluation of the singers' voices and self-reports. Methods Five professional sopranos performed an excerpt from a Bellini opera which involved the emission of an upper high note. The auditory-perceptual evaluation was carried out by three speech-language therapists and three singing teachers, who considered brightness, loudness, metal quality, vibrato, breathiness, and resonance on a visual-analytical scale, based on each singer's emission of high notes. After the recording, the singers were asked to answer a proprioceptive questionnaire on the physical sensations that they had as they emitted upper high notes. An inferential analysis of the data from the auditory-perceptual evaluation was conducted, and the singers' self-reports were summarized and then orthographically transcribed. Results In the auditory-perceptual analysis, the emission of upper high notes was characterized according to the presence of brightness, loudness, metal quality, vibrato, and anterior resonance, as perceived by speech-language therapists and singing teachers. In the proprioceptive report, all singers reported laryngeal elevation and a need to use respiratory support in order to emit upper high notes. Conclusion Upper high notes are characterized by a bright vocal emission, enhanced loudness, with a metallic quality and vibrato, little or no breathiness, accompanied by a sensation of laryngeal elevation and a need for respiratory support.

Glottal Closure in Women with No Voice Complaints or Laryngeal Disorders

Introduction: The understanding of normal vocal production is essential to guide any voice professional as it is fundamental to understand the effects of the posterior glottal gap on the vocal quality. Objective: The aim of the present study was to verify the association between glottic closure, acoustic parameters, and some characteristics of the videolaryngostroboscopy of young women without vocal complaints nor laryngeal disorders. Methods: This is a cross-sectional study with 56 women between 20 and 30 years old who underwent videolaryngostroboscopy. The acoustic parameters of the vowel /a:/ were analyzed using the Praat software, Release 4.6.10 (Paul Boersman and David Weenik, Amsterdam, Netherlands). Statistical Analysis: The chi-squared, Fischer, and Kruskall-Wallis tests were applied, with 5% significance. Results: Significant occurrence of posterior glottal gap (85.71%, p < 0.001), of normal vocal folds vibration amplitude (82.14%, p < 0.001), and of absence of significant constriction of the laryngeal vestibule (98.21%, p < 0.001); no significant association of the glottic closure with the vocal acoustic parameters; no significant association of glottic closure, vocal folds vibration amplitude, and constriction of the laryngeal vestibule. Conclusion: There was a predominance of posterior glottal gap, normal vocal folds vibration amplitude, and absence of laryngeal vestibule constriction, and no relation with the acoustic parameters, suggesting that the posterior glottal gap did not generate impact on the vocal production of the young adult women studied (AU)

Effects of electromyographic biofeedback as an adjunctive therapy in the treatment of swallowing disorders: a systematic review of the literature.

PURPOSE: To describe the primary effects of electromyographic biofeedback therapy on swallowing via a systematic review. METHODS: A blind search was carried out by two researchers in the PubMed and Bireme platforms and in the Medline, Lilacs, SciELO, PsycINFO, CINAHL, and Web of Science databases, and the journal articles identified therein were evaluated for inclusion in the study. Original articles associated with the theme were selected with no population-, region-, or language-associated limits. A protocol was created for this study with the following points: author, year, place, number and characteristics of participants, activities evaluated, instruments used, and main results. The PEDro scale was used to analyze the quality of the studies. RESULTS: Among the 686 articles identified in the combined searches, 566 were duplicates. A total of 65 articles were discarded after the title and abstract were read, and a further 29 articles were discarded after the full text was read, yielding a total of six articles for inclusion. In summary, the results lead us to believe that positive effects on the laryngeal lifting capacity, improved swallowing functions, and increased excursion and maximal elevation of the hyoid bone, may be directly related to this method of therapy. CONCLUSIONS: Adjunctive therapeutic protocols with biofeedback electromyography exert positive effects on swallowing function.

Voiced High-frequency Oscillation and LaxVox: Analysis of Their Immediate Effects in Subjects With Healthy Voice.

OBJECTIVES: The aim of this study was to analyze the immediate effects of voiced high-frequency oscillation (VHFO) and LaxVox exercises in vocally healthy subjects. METHODS: Thirty adult subjects (15 women, 15 men) with no history of dysphonia or vocal complaints participated in the study. The subjects performed VHFO and LaxVox techniques for 3 minutes in a random order, with a washout period of 7 days. They answered a questionnaire for vocal/laryngeal intensity symptoms, and had maximum phonation time (MPT) /a/, /s/, /z/, and number counting measured. The vowel /a/ was also recorded before and after both techniques for acoustic analysis. After both techniques, the subjects answered a questionnaire about vocal, laryngeal, respiratory, and articulatory sensations. Data were analyzed using the Wilcoxon, and paired t and chi-square tests were used (P < 0.05), as required. RESULTS: There was an increase in high loudness symptom after LaxVox in women, whereas there was a decrease in painful throat, irritated throat, and low loudness symptoms after VHFO in men. After LaxVox, the MPT of /z/ increased in women and after VHFO, the MPT of /s/, /z/, and number counting increased in men. The fundamental frequency variability increased in women after VHFO. The sensations remained unchanged in both groups following the two exercises in women and men. CONCLUSIONS: VHFO and LaxVox techniques had similar effects on vocal and laryngeal symptoms, as a matter of fact, in terms of phonatory and acoustic measures. With regard to vocal symptoms, VHFO showed better immediate effects in men than in women. As a result, the hypothesis H0 is partially refuted.

Effects of Weight Loss on Acoustic Parameters After Bariatric Surgery.

BACKGROUND: Patients with morbid obesity may present vocal alterations, since large accumulation of fat in the vocal tract may interfere with voice production of these individuals. OBJECTIVE: Verify the neck circumference and the acoustic parameters of voice in obese women, before and after the bariatric surgery, and compare the results with a control group, with normal weight. METHODS: Observational, longitudinal, descriptive study with patients referred to the SCODE (Obesity Surgery and Related Disorders Center) in a university hospital. The sample consisted of 25 morbidly obese women, age range 28-43 years and 23 non-obese women, aged 21-41 years control group. To measure the neck circumference, a tape measure was used and all participants were seated upright with the head positioned in the Frankfort horizontal plane. The fundamental frequency was calculated through the sustained emission of vowel [a] at usual intensity and pitch, to measure the fundamental frequency of the voice, that is, how much the vocal fold vibrates per second. After the recording, participants were prompted to produce vowels [a], [i], and [u] sustained at usual intensity and pitch, and a stopwatch was used to measure the maximum phonation time, to verify the balance between myoelastic and dynamic forces of the larynx. After 8 months post-surgery, the patients were recruited to be re-evaluated using the same pre-surgical data collection procedures. RESULTS: There was an increase in the mean value of f0. The maximum phonation time of all vowels increased after surgery. CONCLUSION: Obese individuals with post-surgery weight loss may present neck circumference, fundamental frequency, and maximum phonation time values closer to the mean values of normal weight individuals. In this study, weight loss was sufficient to adjust the acoustic parameter measurements.

Accuracy and reliability of the sensory test performed using the laryngopharyngeal endoscopic esthesiometer and rangefinder in patients with suspected obstructive sleep apnoea hypopnoea: protocol for a prospective double-blinded, randomised, exploratory study.

INTRODUCTION: Patients with obstructive sleep apnoea hypopnoea syndrome (OSA) might have varying degrees of laryngopharyngeal mechanical hyposensitivity that might impair the brain's capacity to prevent airway collapse during sleep. However, this knowledge about sensory compromises in OSA comes from studies performed using methods with little evidence of their validity. Hence, the purpose of this study is to assess the reliability and accuracy of the measurement of laryngopharyngeal mechanosensitivity in patients with OSA using a recently developed laryngopharyngeal endoscopic esthesiometer and rangefinder (LPEER). METHODS AND ANALYSIS: The study will be prospective and double blinded, with a randomised crossover assignment of raters performing the sensory tests. Subjects will be recruited from patients with suspected OSA referred for baseline polysomnography to a university hospital sleep laboratory. Intra-rater and inter-rater reliability will be evaluated using the Bland-Altman's limits of agreement plot, the intraclass correlation coefficient, and the Pearson or Spearman correlation coefficient, depending on the distribution of the variables. Diagnostic accuracy will be evaluated plotting ROC curves using standard baseline polysomnography as a reference. The sensory threshold values ​​for patients with mild, moderate and severe OSA will be determined and compared using ANOVA or the Kruskal-Wallis test, depending on the distribution of the variables. The LPEER could be a new tool for evaluating and monitoring laryngopharyngeal sensory impairment in patients with OSA. If it is shown to be valid, it could help to increase our understanding of the pathophysiological mechanisms of this condition and potentially help in finding new therapeutic interventions for OSA. ETHICS AND DISSEMINATION: The protocol has been approved by the Institutional Review Board of Fundacion Neumologica Colombiana. The results will be disseminated through conference presentations and peer-reviewed publication. TRIAL REGISTRATION: This trial was registered at Clinical Trials Accuracy of the sensory test using the lLaryngopharyngeal endoscopic esthesiometer in obstructive sleep apnea. Protocol ID: 201611-22405. ClinicalTrials.gov ID: NCT03109171.

Examination of swallowing maneuver training and transfer of practiced behaviors to laryngeal vestibule kinematics in functional swallowing of healthy adults.

Swallowing maneuvers are routinely trained in dysphagia rehabilitation with the assumption that practiced behaviors transfer to functional swallowing, however transfer is rarely examined in the deglutition literature. The goal of this study was to train the volitional laryngeal vestibule closure (vLVC) maneuver, which is a swallowing maneuver that targets prolonged laryngeal vestibule closure (LVC). In two different training experiments, 69 healthy adults underwent Long-hold (hold vLVC as long as possible) or Short-hold vLVC training (hold vLVC for 2s). Before and after vLVC training, natural swallows (swallowing without a therapeutic technique) were completed. The outcome variables included laryngeal vestibule closure reaction time and the duration of laryngeal vestibule closure. Results indicate that during both Long-hold and Short-hold vLVC trainings, vLVC swallows had faster laryngeal vestibule closure reaction times and longer durations of laryngeal vestibule closure than in pre-training 5ml liquid swallows. However, only faster laryngeal vestibule closure reaction times transferred to post-training 5ml liquid swallows (20-24% faster), but not prolonged durations of laryngeal vestibule closure. Our findings suggest that swallowing maneuver training has the potential to induce transfer of what was practiced to functional swallowing behavior, although not all practiced behaviors may generalize. These findings are significant for bolstering the effectiveness of dysphagia management in medical settings and should be tested in individuals with dysphagia.

How do laryngeal and respiratory functions contribute to differentiate actors/actresses and untrained voices?

PURPOSE: The present study aimed to compare actors/actresses's voices and vocally trained subjects through aerodynamic and electroglottographic (EGG) analyses. We hypothesized that glottal and breathing functions would reflect technical and physiological differences between vocally trained and untrained subjects. METHODS: Forty participants with normal voices participated in this study (20 professional theater actors and 20 untrained participants). In each group, 10 male and 10 female subjects were assessed. All participants underwent aerodynamic and EGG assessment of voice. From the Phonatory Aerodynamic System, three protocols were used: comfortable sustained phonation with EGG, voice efficiency with EGG, and running speech. Contact quotient was calculated from EGG. All phonatory tasks were produced at three different loudness levels. Mean sound pressure level and fundamental frequency were also assessed. Univariate, multivariate, and correlation statistical analyses were performed. RESULTS: Main differences between vocally trained and untrained participants were found in the following variables: mean sound pressure level, phonatory airflow, subglottic pressure, inspiratory airflow duration, inspiratory airflow, and inspiratory volume. These variables were greater for trained participants. Mean pitch was found to be lower for trained voices. CONCLUSIONS: The glottal source seemed to have a weak contribution when differentiating the training status in speaking voice. More prominent changes between vocally trained and untrained participants are demonstrated in respiratory-related variables. These findings may be related to better management of breathing function (better breath support).

Acoustical and anatomical determination of sound production and transmission in West Indian (Trichechus manatus) and Amazonian (T. inunguis) manatees.

West Indian (Trichechus manatus) and Amazonian (T. inunguis) manatees are vocal mammals, with most sounds produced for communication between mothers and calves. While their hearing and vocalizations have been well studied, the actual mechanism of sound production is unknown. Acoustical recordings and anatomical examination were used to determine the source of sound generation. Recordings were performed on live captive manatees from Puerto Rico, Cuba and Colombia (T. manatus) and from Peru (T. inunguis) to determine focal points of sound production. The manatees were recorded using two directional hydrophones placed on the throat and nasal region and an Edirol-R44 digital recorder. The average sound intensity level was analyzed to evaluate the sound source with a T test: paired two sample for means. Anatomical examinations were conducted on six T. manatus carcasses from Florida and Puerto Rico. During necropsies, the larynx, trachea, and nasal areas were dissected, with particular focus on identifying musculature and soft tissues capable of vibrating or constricting the airway. From the recordings we found that the acoustical intensity was significant (P < 0.0001) for both the individuals and the pooled manatees in the ventral throat region compared to the nasal region. From the dissection we found two raised areas of tissue in the lateral walls of the manatee's laryngeal lumen that are consistent with mammalian vocal folds. They oppose each other and may be able to regulate airflow between them when they are adducted or abducted by muscular control of arytenoid cartilages. Acoustic and anatomical evidence taken together suggest vocal folds as the mechanism for sound production in manatees.

Verificação da eficácia do uso de tubos de ressônancia na terapia vocal com indivíduos idosos / Verifying the effectiveness of using resonance tubes in voice therapy with elderly people

Objetivo : Verificar a eficácia do uso da técnica “Tubos de Ressonância – Método Finlandês” em um grupo de indivíduos idosos com queixas de alterações vocais e respiratórias. Métodos : A amostra foi composta por residentes de uma instituição de longa permanência para idosos (ILPI), divididos igualmente entre Grupo de Pesquisa (G1) e Grupo de Controle (G2). Foram incluídos na pesquisa 42 idosos, dos quais 30 do gênero feminino, na faixa etária de 62 anos a 93 anos de idade. Foi aplicado um inventário sociodemográfico seguido da espirometria e da gravação das vozes, antes e depois da intervenção. O G1 participou de seis sessões com a técnica “tubos de ressonância” e o G2 participou de seis oficinas de saúde vocal. As vozes gravadas foram analisadas segundo critérios da escala GRBASI. Resultados : O grupo G1 obteve melhora significativa, enquanto o grupo G2 não obteve mudança vocal significativa. A espirometria obteve melhora no G1 e piora no G2. Conclusão : A técnica finlandesa de tubos de ressonância apresentou eficácia na terapia com indivíduos idosos com sintomas de presbifonia, auxiliando na melhora da qualidade vocal e da capacidade vital. .

Purpose : Verifying the effectiveness of the Finnish resonance tube method in a group of elderly subjects with complaints of vocal and respiratory changes. Methods : The sample was made up of dwellers from a long-term care institution (LTCI) who were equally distributed into Research Group (G1) and Control Group (G2). 42 elderly, 30 of whom female, between 62 and 93 years old took part in the research. A sociodemographic survey was applied followed by spirometry and voice recording both prior to and after the intervention. G1 attended six resonance tube sessions, while G2 attended six vocal health workshops. The voices recorded were analyzed following the GRBASI scale. Results : G1 significantly improved while G2 did not have any significant voice change. Spiromety improved in G1 and worsened in G2. Conclusion : The Finnish resonance tube technique was effective in treating the elderly with presbyphonia symptoms and aided in improving their vocal quality and vital capacity. .

Do body mass index and fat volume influence vocal quality, phonatory range, and aerodynamics in females?

PURPOSE: To analyze the impact of body weight and body fat volume on selected parameters of vocal quality, phonatory range, and aerodynamics in females. METHODS: Based on measurements of body mass index in combination with body fat volume, 29 normophonic female subjects were classified as normal weight, underweight, and obese. Voice quality was investigated via auditory-perceptual ratings of breathiness, roughness, and overall dysphonia severity, via various acoustic measures and a multiparametric index. Phonatory range performance was examined using selected measures of the voice range profile and speech range profile. Measures of vocally relevant aerodynamics included vital capacity (i.e., VC), expected VC, phonation quotient, and maximum phonation time (i.e., MPT). RESULTS: Significant differences between the three weight groups were found across several measures of intensity, VC, MPT, and shimmer. As compared to the other groups, significantly higher values of maximum and minimum intensity levels, as well as sound pressure level during habitual running speech were observed for the obese group (all p-values<0.05); whereas, the underweight group had significantly lower values for VC and ratio of expected to measured VC (p-values<0.01). Furthermore, underweight subjects differed significantly as compared to normal weight subjects with lower MPT (p=0.025) and higher lowest-F0 (p=0.035). Finally the obese group showed significantly lower shimmer values than the normal weight subjects (p<0.05). CONCLUSION: Body weight and body fat volume appear to influence select objective measures of voice quality, vocal aerodynamics, and phonatory range performance.

Laryngoscopic, acoustic, perceptual, and functional assessment of voice in rock singers.

OBJECTIVE: The present study aimed to vocally assess a group of rock singers who use growl voice and reinforced falsetto. METHOD: A group of 21 rock singers and a control group of 18 pop singers were included. Singing and speaking voice was assessed through acoustic, perceptual, functional and laryngoscopic analysis. RESULTS: No significant differences were observed between groups in most of the analyses. Acoustic and perceptual analysis of the experimental group demonstrated normality of speaking voice. Endoscopic evaluation showed that most rock singers presented during singing voice a high vertical laryngeal position, pharyngeal compression and laryngeal supraglottic compression. Supraglottic activity during speaking voice tasks was also observed. However, overall vocal fold integrity was demonstrated in most of the participants. Slightly abnormal observations were demonstrated in few of them. Singing voice handicap index revealed that the most affected variable was the physical sphere, followed by the social and emotional spheres. CONCLUSIONS: Although growl voice and reinforced falsetto represent laryngeal and pharyngeal hyperfunctional activity, they did not seem to contribute to the presence of any major vocal fold disorder in our subjects. Nevertheless, we cannot rule out the possibility that more evident vocal fold disorders could be found in singers who use these techniques more often and during a longer period of time.

O índice de massa corporal e o volume de gordura influenciam a qualidade vocal, extensão fonatória e aerodinâmica em mulheres? / Do body mass index and fat volume influence vocal quality, phonatory range, and aerodynamics in females?

OBJETIVO: Analisar o impacto do peso corporal e do volume de gordura corporal sobre parâmetros selecionados de qualidade vocal, tessitura fonatória e aerodinâmica em indivíduos do sexo feminino. MÉTODOS: Com base em medidas de índice de massa corporal e volume de gordura corporal, 29 indivíduos do sexo feminino, de aparelhos fônicos normais, foram distribuídos em grupos de peso normal, abaixo da média e obesos. A qualidade vocal foi investigada por meio de classificações auditório-perceptivas de soprosidade, rugosidade e severidade de disfonia por meio de várias medidas acústicas e índice multiparamétrico. O desempenho da tessitura fonatória foi examinado por meio do uso de medidas selecionadas do perfil de extensão vocal e perfil de extensão discursiva. As medidas de aerodinâmica vocalmente relevantes incluíram capacidade vital (CV), CV esperada, coeficiente fonatório e tempo de fonação máximo (TFM). RESULTADOS: Diferenças significativas entre os três grupos foram encontradas em relação a várias medidas de intensidade, CV, TFM e shimmer. Em comparação com os outros grupos, valores significativamente maiores de níveis de intensidade máxima e mínima e nível de pressão sonora durante discurso habitual foram observados no grupo obeso (todos os valores de p<0,05); já o grupo abaixo do peso apresentou valores significativamente menores para CV e para a proporção de CV esperada em relação à CV medida (valores de p<0,01). Além disso, indivíduos abaixo do peso diferiram significativamente quando comparados a indivíduos de peso normal com TFM menor (p=0,025) e F0 menor mais elevada (p=0,035). Por fim, o grupo obeso apresentou valores de shimmer significativamente menores do que os indivíduos com peso normal (p<0,05). CONCLUSÃO: O peso corporal e o volume de gordura corporal parecem influenciar certas medidas objetivas de qualidade vocal, aerodinâmica vocal e desempenho de tessitura fonatória.

PURPOSE: To analyze the impact of body weight and body fat volume on selected parameters of vocal quality, phonatory range, and aerodynamics in females. METHODS: Based on measurements of body mass index in combination with body fat volume, 29 normophonic female subjects were classified as normal weight, underweight, and obese. Voice quality was investigated via auditory-perceptual ratings of breathiness, roughness, and overall dysphonia severity, via various acoustic measures and a multiparametric index. Phonatory range performance was examined using selected measures of the voice range profile and speech range profile. Measures of vocally relevant aerodynamics included vital capacity (i.e., VC), expected VC, phonation quotient, and maximum phonation time (i.e., MPT). RESULTS: Significant differences between the three weight groups were found across several measures of intensity, VC, MPT, and shimmer. As compared to the other groups, significantly higher values of maximum and minimum intensity levels, as well as sound pressure level during habitual running speech were observed for the obese group (all p-values<0.05); whereas, the underweight group had significantly lower values for VC and ratio of expected to measured VC (p-values<0.01). Furthermore, underweight subjects differed significantly as compared to normal weight subjects with lower MPT (p=0.025) and higher lowest-F0 (p=0.035). Finally the obese group showed significantly lower shimmer values than the normal weight subjects (p<0.05). CONCLUSION: Body weight and body fat volume appear to influence select objective measures of voice quality, vocal aerodynamics, and phonatory range performance.

Comparative analysis of the closed quotient for lip and tongue trills in relation to the sustained vowel /ε/.

Various types of trill exercises have been used for a long time as a tool in the treatment and preparation of the voice. Although they are reported to produce vocal benefits in most subjects, their physiology has not yet been studied in depth. The aim of this study was to compare the mean and standard deviation of the closed quotient in exercises of lip and tongue trills with the sustained vowel /ε/ in opera singers. Ten professional classical (operatic) singers, reportedly in perfect laryngeal health, served as subjects for this study and underwent electroglottography. During the examination, the subjects were instructed to deliver the sustained vowel /ε/ and lip and tongue trills in a same preestablished frequency and intensity. The mean values and standard deviation of the closed quotient were obtained using the software developed for this purpose. The comparison of the results was intrasubjects; maximum intensities were compared only among them and so were minimum intensities. The means of closed quotient were statistically significant only in the strong intensities, and the lip trill was different from the tongue trill and the sustained vowel /ε/. The standard deviation of the closed quotient distinguished the sustained vowel /ε/ from the lip and tongue trills in the two intensities. We concluded that there is oscillation of the closed quotient during the exercises of tongue and lip trills, and the closed quotient is higher during the performance of exercises of the lip trill, when compared with the two other utterances, only in the strong intensities.

What about the "actor's formant" in actresses' voices?

Spectrographic analysis of male actors' voices showed a cluster, the "actor's formant" (AF), which is related to the perception of good and projected voice quality. To date, similar phenomena have not been described in the voices of actresses. Therefore, the objective of the current investigation was to compare actresses' and nonactresses' voices through acoustic analysis to verify the existence of the "AF" cluster or the strategies used to produce the performing voice. Thirty actresses and 30 nonactresses volunteered as subjects in the present study. All subjects read a 40-second text at both habitual and loud levels. Praat (v.5.1) was then used to analyze equivalent sound pressure level (Leq), speaking fundamental frequency (SFF), and in the long-term average spectrum window, the difference between the amplitude level of the fundamental frequency and first formant (L1-L0), the spectral tilt (alpha ratio), and the amplitude and frequency of the "AF" region. Significant differences between the groups, in both levels, were observed for SFF and L1-L0, with actresses presenting lower values. There were no significant differences between groups for Leq or alpha ratio at either level. There was no evidence of an "AF" cluster in the actresses' voices. Voice projection for this group of actresses seemed to be mainly a result of a laryngeal setting instead of vocal tract resonances.

Acoustic measurements of the glottal source of normal male voices.

BACKGROUND: acoustic vocal characteristics of young male adults. AIM: to characterize the acoustic measurements of the glottal source of young male adults with normal voices and larynx and to compare these results to the standard measurements proposed by the software used for this assessment. METHOD: 25 young male individuals (20 to 40 years), who presented normal voices and larynx, were selected. All subjects had the prolonged vowel [a] emission analyzed by the Multi Dimensional Voice Program Advanced (MDVPA). The Lilliefords test, with a significance level of 5%, was used to verify the normal distribution of the results of each measurement. The parameters with normal distribution had their means compared to the standard measurements proposed by the program using the T Test (significance level of 5%). RESULTS: the group was characterized by 18 means of acoustic measurements. Measurements of frequency disturbance and amplitude were the ones that most differed from the standard measurements, presenting higher values. Approximately half of the measurements presented normal distribution. CONCLUSIONS: the measurements of jitter and shimmer of young male adults with normal voices and larynx were high. Measurements of fundamental frequency, noise and instability remained within the expected values. Approximately half of the measurements presented normal distribution prevailing those of jitter and shimmer, indicating that these measurements can be used as a reference.

Configurable portable/ambulatory instrument for the analysis of the coordination between respiration and swallowing.

Physiological studies of swallowing and the diagnosis and treatment of dysphagia are crucially dependent of detailed information of respiratory and feeding events. Home telemonitoring is of great interest in this area, where large numbers of people have long term conditions. The purpose of this study was twofold: (1) describe a new configurable instrument that can be used in ambulatory and telemedicine applications and (2) evaluate the performance of this device in the description of physiological and abnormal events during water swallowing. The instrument is able to detect when water is beginning to enter the mouth of the volunteer, to unobtrusively monitor the respiration, and to characterize the elevation of the larynx. The performance of the system was tested in normal subjects and patients with dysphagia, showing results in close agreement with the physiology. We concluded that the developed system could be a useful tool for the ambulatory evaluation of respiratory and feeding events and for the implementation of telemedicine services, contributing to reduce the costs of the assistance offered to patients with dysphagia.

Medidas acústicas de fonte glótica de vozes masculinas normais / Acoustic measurements of the glottal source of normal male voices

TEMA: características vocais acústicas de homens jovens adultos. OBJETIVO: caracterizar as medidas acústicas da fonte glótica de homens adultos jovens com voz e laringe normais e compará-las ao padrão do software usado. MÉTODO: foram selecionados 25 sujeitos do sexo masculino, voz e laringe normais, faixa etária de adulto jovem (20 a 40 anos). Todos tiveram a emissão da vogal [a] analisada pelo Multi Dimensional Voice Program Advanced (MDVPA). Foi realizada a distribuição normal dos resultados de cada medida do programa através do Teste Lilliefords, com nível de significância de 5 por cento. Os parâmetros que tiveram distribuição normal tiveram suas médias comparadas ao padrão de normalidade proposto pelo programa através do Teste t, com nível de significância de 5 por cento. Resultado: o grupo foi caracterizado por 18 médias de medidas acústicas. As medidas de perturbação de frequência e de amplitude foram as que mais se distanciaram da normalidade, apresentando valores altos. Aproximadamente a metade das medidas apresentou distribuição normal. CONCLUSÃO: em homens adultos jovens com voz e laringe normais, as medidas de jitter e de shimmer mostraram-se altas e as de frequência fundamental, de ruído e de instabilidade ficaram dentro do esperado. Aproximadamente a metade das medidas apresentou distribuição normal, predominando as de jitter e de shimmer, podendo ser utilizadas como referência.

BACKGROUND: acoustic vocal characteristics of young male adults. AIM: to characterize the acoustic measurements of the glottal source of young male adults with normal voices and larynx and to compare these results to the standard measurements proposed by the software used for this assessment. METHOD: 25 young male individuals (20 to 40 years), who presented normal voices and larynx, were selected. All subjects had the prolonged vowel [a] emission analyzed by the Multi Dimensional Voice Program Advanced (MDVPA). The Lilliefords test, with a significance level of 5 percent, was used to verify the normal distribution of the results of each measurement. The parameters with normal distribution had their means compared to the standard measurements proposed by the program using the T Test (significance level of 5 percent). RESULTS: the group was characterized by 18 means of acoustic measurements. Measurements of frequency disturbance and amplitude were the ones that most differed from the standard measurements, presenting higher values. Approximately half of the measurements presented normal distribution. CONCLUSIONS: the measurements of jitter and shimmer of young male adults with normal voices and larynx were high. Measurements of fundamental frequency, noise and instability remained within the expected values. Approximately half of the measurements presented normal distribution prevailing those of jitter and shimmer, indicating that these measurements can be used as a reference.