Validity of Acoustic Measures Obtained Using Various Recording Methods Including Smartphones With and Without Headset Microphones.

PURPOSE: The goal of this study was to assess various recording methods, including combinations of high- versus low-cost microphones, recording interfaces, and smartphones in terms of their ability to produce commonly used time- and spectral-based voice measurements. METHOD: Twenty-four vowel samples representing a diversity of voice quality deviations and severities from a wide age range of male and female speakers were played via a head-and-thorax model and recorded using a high-cost, research standard GRAS 40AF (GRAS Sound & Vibration) microphone and amplification system. Additional recordings were made using various combinations of headset microphones (AKG C555 L [AKG Acoustics GmbH], Shure SM35-XLR [Shure Incorporated], AVID AE-36 [AVID Products, Inc.]) and audio interfaces (Focusrite Scarlett 2i2 [Focusrite Audio Engineering Ltd.] and PC, Focusrite and smartphone, smartphone via a TRRS adapter), as well as smartphones direct (Apple iPhone 13 Pro, Google Pixel 6) using their built-in microphones. The effect of background noise from four different room conditions was also evaluated. Vowel samples were analyzed for measures of fundamental frequency, perturbation, cepstral peak prominence, and spectral tilt (low vs. high spectral ratio). RESULTS: Results show that a wide variety of recording methods, including smartphones with and without a low-cost headset microphone, can effectively track the wide range of acoustic characteristics in a diverse set of typical and disordered voice samples. Although significant differences in acoustic measures of voice may be observed, the presence of extremely strong correlations (rs > .90) with the recording standard implies a strong linear relationship between the results of different methods that may be used to predict and adjust any observed differences in measurement results. CONCLUSION: Because handheld smartphone distance and positioning may be highly variable when used in actual clinical recording situations, smartphone + a low-cost headset microphone is recommended as an affordable recording method that controls mouth-to-microphone distance and positioning and allows both hands to be available for manipulation of the smartphone device.

Estudo de série de casos sobre voz e transexualidade: características acústicas de homens e mulheres trans brasileiras / Case series study on voice and transsexuality: acoustic characteristics of Brazilian trans men and women / Estudio de serie de casos sobre voz y transexualidad: características acústicas de hombres y mujeres trans brasileños

Objetivo: Descrever as características acústicas na voz de homens e mulheres trans. Método: Participaram desta pesquisa seis pessoas trans, dois homens e quatro mulheres trans, com idade superior a 18 anos. Foram utilizados o software SoundForge 10.0®, o Advanced Multi- Dimensional Voice Programm (MDVP-Adv) para extração das medidas da análise acústica computadorizada e o programa Analysis Synthesis Laboratory (Computerized Speech Lab - Kay Pentax®) para análise do filtro vocal. Resultados: Os valores dos formantes se mostraram menores quando comparados à literatura nacional e internacional. As medidas de f0 apresentaram valores abaixo do esperado ao gênero feminino e aumentados ao gênero masculino. Quanto às medidas de frequência fundamental máxima (fhi) e mínima (flo), os resultados apresentaram uma grande variabilidade, sugerindo instabilidade fonatória. Os resultados de jitter e shimmer e os parâmetros relacionados ao ruído, como o Índice de turbulência vocal (VTI) e Índice de fonação suave (SPI) mostraram-se incongruentes quando relacionados aos parâmetros de normalidade. A medida de ruído/harmônico NHR se mostrou maior que os valores de normalidade, sugerindo presença de ruído ou rouquidão durante a emissão. As medidas de tremor vocal (Fatr e Ftri) apresentaram distribuição anormal quando comparadas à literatura. Não foi possível observar relação nas análises das características acústicas entre os valores de referência e as pessoas participantes desta pesquisa. Conclusão: As medidas acústicas de vozes de homens e mulheres trans apresentam análises diferentes quando comparados à literatura, evidenciando fragilidade dos programas de análise vocal acústica que não contemplam a heterogeneidade cultural e as variadas identidades de gênero.

Objective: To describe the acoustic characteristics in the voice of trans men and women. Method: Six trans subjects, two men and four trans women, aged over 18 years participated in this study. The SoundForge 10.0® software was used to edit and select the vowel /a/, the Advanced Multi-Dimensional Voice Program (MDVP-Adv) for extraction of measurements from computerized acoustic analysis, and the Analysis Synthesis Laboratory program (Computerized Speech Lab - Kay Pentax®) for analysis of the vocal filter. Results: Formant values were lower when compared to national and international literature. The measures of f0 presented values below that expected for the female gender and increased to the male gender. Regarding the measures of the highest fundamental frequency (fhi) and the lowest (flo), the results showed great variability, suggesting phonatory instability. The results of jitter and shimmer and noise-related parameters, such as Voice Turbulence Index (VTI) and Soft Phonation Index (SPI), were incongruent when related to normality parameters. The noise / harmonic NHR measurement showed to be higher than the normal values, suggesting the presence of noise or hoarseness during the emission. Measurements of vocal tremor (Fatr and Ftri), presented an abnormal distribution when compared to the literature. It was not possible to observe relations in the analysis of the acoustic characteristics between the reference values and the people participating in this research. Conclusion: The acoustic measures of voices of trans people present different analysis when compared to the literature, evidencing the fragility of acoustic vocal analysis programs that do not contemplate the cultural heterogeneity and the varied gender identities.

Objetivo: describir las características acústicas en la voz de hombres y mujeres trans. Metodos: Seis personas trans, dos hombres y cuatro mujeres trans, mayores de 18 años participaron en esta investigación. El software SoundForge 10.0®, Programa de voz multidimensional avanzado (MDVP-Adv) se utilizaron para extraer las mediciones del análisis acústico computarizado y el programa del Laboratorio de síntesis de análisis (Laboratorio de habla computarizada - Kay Pentax®) para analizar el filtro vocal. Resultados: Los valores de los formantes demostraron ser más bajos en comparación con la literatura nacional e internacional. Las mediciones de f0 mostraron valores inferiores al esperado para el género femenino y aumentaron para el género masculino. En cuanto a las medidas de frecuencia fundamental máxima (fhi) y mínima (flo), los resultados mostraron una gran variabilidad, lo que sugiere inestabilidad fonatoria. Los resultados de jitter y shimmer y los parámetros relacionados con el ruido, como el índice de turbulencia vocal (VTI) y el índice de fonación suave (SPI) fueron incongruentes cuando se relacionaron con los parámetros de normalidad. La medida de ruido / armónicos NHR fue más alta que los valores normales, lo que sugiere la presencia de ruido o ronquera durante la emisión. Las mediciones del temblor vocal (Fatr y Ftri) mostraron una distribución anormal en comparación con la literatura. No fue posible observar una relación en el análisis de las características acústicas entre los valores de referencia y las personas que participan en esta investigación. Conclusión: Las medidas acústicas de las voces de las personas trans presentan diferentes análisis en comparación con la literatura, mostrando la fragilidad de los programas de análisis acústico vocal que no contemplan la heterogeneidad cultural y las diferentes identidades de género.

Description of acoustic and articulatory parameters of vowels in mapudungun speakers: pilot study / Descripción de parámetros acusticos y articulatorios de las vocales en hablantes de mapudungun: estudio piloto

Mapudungun is a language used by Mapuche people in some regions of Chile and Argentina. The aim of this study was to describe the vowel phonemes with regard to the articulatory parameters (position of the tongue with respect to the palate and jaw opening) and acoustic parameters (f0, F1, F2 and F3) in Mapudungun speakers in the Region of La Araucanía. The vocalic phonemes of Mapudungun are six, where the first five are similar to those used in Spanish (/a e i o u/), to which is added a sixth vowel (/ɨ/) with its vocalic allophones (/ɨ/) and [Ә]. Three Mapudungun speakers were evaluated. The tongue movements were collected by Electromagnetic Articulography 3D and the data were processed with MATLAB and PRAAT software. It was possible to describe the trajectory of each third of the tongue during the production of the vowels. It was observed that the sixth vowel /Ә/ had minimal jaw opening during its pronunciation. In addition, the characteristic of /Ә/ as an unrounded mid-central vowel was corroborated. In this study, the tongue of mapudungun speakers was in a more posterior position than the found in other studies.

El Mapudungun es un lenguaje utilizado por los mapuches en algunas regiones de Chile y Argentina. El objetivo de este estudio fue describir los fonemas vocálicos respecto a los parámetros articulatorios (posición de la lengua respecto al paladar y apertura mandibular) y los parámetros acústicos (f0, F1, F2 y F3) en hablantes de Mapudungun en la Región de La Araucanía, los fonemas vocálicos de Mapudungun son seis, donde los primeros cinco son similares a los utilizados en español (/a e i o u /), a los que se agrega una sexta vocal (/ɨ/) con sus alófonos vocálicos [ɨ] y [Ә]. Se evaluaron tres hablantes de Mapudungun. Los movimientos de la lengua fueron registrados por Articulografía Electromagnética 3D y los datos fueron procesados con el software MATLAB y PRAAT. Fue posible describir la trayectoria de cada tercio de la lengua durante la producción de las vocales. Se observó que la sexta vocal /Ә/ tenía una apertura mínima de la mandíbula durante su pronunciación. Además, se corroboró la característica de /Ә/ como vocal central media no redondeada. En este estudio, la lengua de los hablantes de mapudungun estaba en una posición más posterior que la encontrada en otros estudios.

A Comparison of the s/z Ratio to Instrumental Aerodynamic Measures of Phonation.

OBJECTIVE: The purpose of this study was to examine how the s/z ratio and instrumental measures of laryngeal valving and voicing efficiency. STUDY DESIGN: Prospective, cohort design. METHODS: Fifteen adult males (mean age 28.3 years) and 15 adult females (mean age 29.2 years) with normal voice quality were recruited and compared on productions of the s/z ratio and instrumental aerodynamic measures. The aerodynamic measures included vital capacity, maximum phonation time, airflow rate during sustained and sentence production, subglottal pressure, and laryngeal airway resistance. These measures were obtained on the Phonatory Aerodynamic System Model 6600. Statistical analyses included a univariate analysis of variance to examine for differences between sexes for all the variables, and between the s/z ratios for each of the three trials. Pearson's Product Moment Correlations were performed to identify the strength and nature of any significant relationships between the s/z ratio and instrumental aerodynamics. RESULTS: There were significant differences in the mean values between males and females only for the measures of vital capacity and maximum phonation time. There were no significant differences between the three trials for the s/z ratio. There was a significant moderate negative correlation between the s/z ratio and laryngeal airway resistance in females and between the s/z ratio and sentence airflow rate in males. CONCLUSIONS: The s/z ratio demonstrated only a moderate correlation with limited instrumental measures of laryngeal valving. In the absence of clear evidence of its ability to accurately assess laryngeal valving, the s/z ratio should be used in combination with other instrumental measures of laryngeal aerodynamics for a better representation of aerodynamic functioning.

The Current State and Future Possibilities of Mobile Phone "Voice Analyser" Applications, in Relation to Otorhinolaryngology.

BACKGROUND: A large proportion of the population suffers from voice disorders. The use of mobile phone technology in healthcare is increasing, and this includes applications that can analyze voice. OBJECTIVE: This study aimed to review the potential for voice analyzer applications to aid the management of voice disorders. METHODS: A literature search was conducted yielding eight studies which were further analyzed. RESULTS: Seven out of the eight studies concluded that smartphone assessments were comparable to current techniques. Nevertheless there remained some common issues with using applications such as; voice parameters used; voice pathology tested; smartphone software consistency and microphone specifications. CONCLUSIONS: It is clear that further developments are required before a mobile application can be used widely in voice analysis. However, promising results have been obtained thus far, and the benefits of mobile technology in this field, particularly in voice rehabilitation, warrant further research into its widespread implementation.

The Impact of Real-Time Articulatory Information on Phonetic Transcription: Ultrasound-Aided Transcription in Cleft Lip and Palate Speech.

OBJECTIVE: This study investigated whether adding an additional modality, namely ultrasound tongue imaging (UTI), to perception-based phonetic transcription impacted on the identification of compensatory articulations and on interrater reliability. PATIENTS AND METHODS: Thirty-nine English-speaking children aged 3-12 years with cleft lip and palate (CLP) were recorded producing repetitions of /aCa/ for all places of articulation with simultaneous audio recording and probe-stabilized ultrasound (US). Three types of transcriptions were performed: (1) descriptive observations from the live US by the clinician recording the data, (2) US-aided transcription (UA) by two US-trained clinicians, and (3) traditional phonetic transcription by two CLP specialists from audio recording. We compared the number of consonants identified as in error by each transcriber and then classified errors into eight different subcategories. RESULTS: Both UA and traditional transcription yielded similar error detection rates; however, these were significantly higher than the observations recorded live in the clinic. Interrater reliability for the US transcribers was substantial (κ = 0.65) compared to moderate (κ = 0.47) for the traditional transcribers. US transcribers were more likely to identify covert errors such as double articulations and retroflexion than the audio-only transcribers. CONCLUSION: UTI is a useful complement to traditional phonetic transcription for CLP speech.

Voice Use in Daily Life Studied With a Portable Voice Accumulator in Individuals With Parkinson's Disease and Matched Healthy Controls.

Purpose The purpose of this work was to study how voice use in daily life is impacted by Parkinson's disease (PD), specifically if there is a difference in voice sound level and phonation ratio during everyday activities for individuals with PD and matched healthy controls. A further aim was to study how variations in environmental noise impact voice use. Method Long-term registration of voice use during 1 week in daily life was performed for 21 participants with PD (11 male, 10 female) and 21 matched healthy controls using the portable voice accumulator VoxLog. Voice use was assessed through registrations of spontaneous speech in different ranges of environmental noise in daily life and in a controlled studio recording setting. Results Individuals with PD use their voice 50%-60% less than their matched healthy controls in daily life. The difference increases in high levels of environmental noise. Individuals with PD used an average voice sound level in daily life that was 8.11 dB (female) and 6.7 dB (male) lower than their matched healthy controls. Difference in mean voice sound level for individuals with PD and controls during spontaneous speech during a controlled studio registration was 3.0 dB for the female group and 4.1 dB for the male group. Conclusions The observed difference in voice use in daily life between individuals with PD and matched healthy controls is a 1st step to objectively quantify the impact of PD on communicative participation. The variations in voice use in different levels of environmental noise and when comparing controlled and variable environments support the idea that the study of voice use should include methods to assess function in less controlled situations outside the clinical setting.

Borg scale: a new method for hypernasality rating. / Escala de Borg: um novo método para avaliação da hipernasalidade de fala.

PURPOSE: To investigate the reliability in auditory-perceptual assessment of hypernasality of the Borg centiMax scale and the influence of the speech material on the reliability of two scales. METHODS: Four experienced speech-language pathologists rated hypernasality of 80 audio recordings of patients with repaired cleft palate (40 single-word string and 40 sentences) using the 5-point ordinal scale and the Borg centiMax scale. Intra and inter-rater reliability were calculated for both scales and for both types of speech samples. The comparison between the agreement coefficients of the two speech samples was calculated using the Z test and between the scales was calculated by Spearman correlation coefficient, considering as significant p<0.05. RESULTS: A very high and statistically significant correlation was found between the Borg centiMax scale and the ordinal scale for both speech samples. Intra- and inter-rater reliability was higher for Borg scale as compared to ordinal scale. Good to excellent intra-rater reliability was found for Borg scale for both speech samples. Poor to excellent intra-rater reliability was found for ordinal scale for both stimuli. Higher inter-rater reliability was demonstrated for Borg scale than ordinal scale for both speech samples. There was a significant difference between the single words string and sentences for intra- and inter-rater reliability using Borg scale, and for inter-rater reliability using ordinal scale. CONCLUSION: The Borg centiMax scale showed better intra and inter-rater reliability. Additionally, the speech material comprising of single words string showed better reliability in most of the comparisons for both scales.

OBJETIVO: Investigar a confiabilidade da escala Borg centiMax como método de avaliação perceptivo-auditiva da hipernasalidade e a influência do tipo de amostra de fala sobre a confiabilidade das avaliações. MÉTODO: Quatro fonoaudiólogas experientes classificaram a hipernasalidade de 80 amostras de fala de pacientes com fissura de palato reparada (40 vocábulos e 40 sentenças) utilizando a escala ordinal de 5 pontos e a escala Borg centiMax. Os índices de concordância intra e interavaliadores foram estabelecidos para ambas as escalas e amostras. A comparação desses índices foi feita pelo teste Z e a comparação entre as escalas foi feita pelo coeficiente de correlação de Spearman (p<0,05). RESULTADOS: Verificou-se correlação muito alta e significante entre a Escala Borg centiMax e a escala ordinal, para ambas as amostras. Os índices de concordância intra-avaliadores (CCI) para a escala Borg centiMax variaram de excelente a bom e, para a escala ordinal (Kappa), de excelente a pobre, em ambas as amostras. A concordância interavaliadores (CCI) para a escala Borg centiMax variou de excelente a moderada e, para a escala ordinal (Kappa), variou de moderada a pobre, para vocábulos e sentenças. Diferença estatisticamente significante, com melhores índices de concordância intra e interavaliadores para vocábulos, foi obtida com a escala Borg centiMax. Para a escala ordinal, diferença significante entre vocábulos e sentenças foi observada apenas para a comparação interavaliador. CONCLUSÃO: A escala Borg centiMax apresentou melhores índices de concordância intra e interavaliadores. A amostra contendo vocábulos mostrou melhores índices de concordância na maioria das comparações, para ambas as escalas.

Validation of the Dysphonia Severity Index in the Dr. Speech Program.

PURPOSE: The Dysphonia Severity Index (DSI) is an objective multiparameter index of voice quality that measures and describes overall voice quality. Some studies have suggested that the reliability of devices for DSI measurement should be examined. We explored the feasibility of DSI measurements using the Dr. Speech (DRS) device, verified its effectiveness for clinical voice measurements and intradevice reliability, and examined the correlation between the DSI and self-evaluations of voice problems. METHODS: Seventy adult participants (including individuals with voice problems and healthy adults) underwent objective and subjective voice assessments. These data were then used to establish a DSIDRS model and test the intradevice (DRS device and Praat software) reliability. The clinical validation of the DSIDRS was conducted by measuring the DSI of six other participants and comparing the observed and predicted perceived voice quality as expressed by the G score (of the GRBAS scale). Moreover, the relationship between the DSI measurements and participants' self-evaluations of voice problems was investigated by analyzing the correlation between the DSI and the Voice Handicap Index (VHI). RESULTS: The DSIDRS discriminated 80% of participants' voice quality ratings. There were strong correlations between the DSI and variables measured by the DRS device and Praat software. Furthermore, there was no significant correlation between the DSIDRS and VHI. CONCLUSION: The DRS device can perform DSI measurements. Objective voice measurements and perceptual voice ratings reflected different aspects of vocal function and its effects. These factors should be considered in clinical practice settings.

Acoustic Voice Quality Index - AVQI for brazilian portuguese speakers: analysis of different speech material. / Acoustic Voice Quality Index - AVQI para o português brasileiro: análise de diferentes materiais de fala.

PURPOSE: This study aimed to verify the best speech material for the AVQI for Brazilian Portuguese language and identify the best validity results between the auditory perceptual judgment (APJ) and the AVQI score on different speech materials. METHODS: We recorded voice samples of 50 individuals (dysphonic and vocally healthy) of several continuous speech (cs) variants (i.e., months of the year, numbers 1 to 20, and CAPE-V sentences) and attached the vowel /a/ in each case. The recorded samples were edited to three different durations of cs variants plus vowel: D1-total speech material; D2-customized speech material without voiceless parts; D3-pre-defined cut-off point speech material. These samples were submitted to three voice experts who judged the overall voice quality; and the AVQI analysis. AVQI's precision and concurrent validity were evaluated considering a Gmean threshold of G<0.5 and G<0.68. RESULTS: The concurrent validity of AVQI and APJ ranged from r = 0.482 to r = 0.634. Numbers presented higher values for all durations. For G<0.5, the best sensitivity and area under the ROC curve was for CAPE-V sentences at D3 (57.8%; 72%). For G<0.68, numbers 1 to 10 had the best diagnostic accuracy and numbers 1 to 20 had the best sensitivity. CONCLUSION: Numbers from 1 to 10 had the best correlation results between APJ and AVQI. For G<0.5, sentences had the best diagnostic accuracy; while for G<0.68, numbers had the best diagnostic accuracy. Numbers are commonly used in the Brazilian clinic routine. According to the validity results and daily clinical practice in Brazil, we suggest the use of numbers as cs for concatenated voice samples of voice quality assessments.

OBJETIVO: Verificar a melhor amostra de fala para validação do AVQI para o português-brasileiro; identificar o contexto de fala com melhor correlação perceptivo-acústica e que possui maior acurácia diagnóstica com o AVQI. MÉTODO: Gravações de 50 sujeitos (disfônicos e vocalmente saudáveis), incluindo: vogal/a/; meses do ano; números (1 a 20) e repetição das frases do CAPE-V. As amostras de fala foram editadas para conter três diferentes durações mais vogal: D1-fala completa; D2-fala com 3s de segmentos sonoros; D3-fala com ponto de corte pré-determinado. Três avaliadores realizaram a análise perceptivoauditiva (APA) das amostras combinadas em 3 contextos seguidos da vogal e deram um único escore do desvio vocal (G:0 a 3). Verificou-se qual estímulo de fala possuía melhor correlação perceptivo-acústica considerando o Gmédio; analisou-se qual estímulo possuía melhor acurácia diagnóstica considerando como presença ou ausência G<0,5 e G<0,68. RESULTADOS: A correlação perceptivo-acústica variou de r = 0,482 a r = 0,634 (Correlação de Spearman); números apresentou os valores mais elevados. O AVQI foi altamente específico e pouco sensível. Considerando G<0,5, a melhor sensibilidade e valor da curva ROC foi para frases em D3 (0,578;0,72). Considerando G<0,68, houve boa acurácia diagnóstica para números de 1 a 10 e maior sensibilidade para números de 1 a 20. CONCLUSÃO: Melhor correlação perceptivo-acústica foi para números, 1 a 10. As frases do CAPE-V produziram melhor acurácia diagnóstica com G<0,5, números apresentou elevada acurácia diagnóstica com G<0,68. Números é bastante usual na clínica brasileira, logo, sugere-se seu uso para validação e análises do AVQI.

Normative nasalance scores for Vietnamese-speaking children.

OBJECTIVE: The Nasometer is increasingly being used to complement auditory perceptual assessment of nasality. Nasalance scores which are obtained from the Nasometer vary across languages. Normative nasalance scores have been established for many languages but not for the Vietnamese language. The objective of this study was to obtain the normative nasalance scores for Vietnamese-speaking children. PARTICIPANTS: In this study, 102 healthy Vietnamese children speaking in the central regional dialect aged from 7 to 9 years (45 boys, 57 girls; mean age = 7.5 years) at a primary school in Hue, Vietnam participated. PROCEDURES: Three speech stimuli, which were specific for the Vietnamese language, were designed: oral stimuli (19 words and 18 sentences), oro-nasal stimuli (eight sentences) and nasal stimuli (seven sentences). The children were asked to repeat these stimuli after the examiner. The Nasometer II (model 6450) was used to obtain the nasalance scores. The procedure took about 10 minutes for each child. RESULTS: The mean nasalance scores and the standard deviation of each stimulus were: 13.1 ± 5.8 (oral stimuli), 30.7 ± 6.6 (oro-nasal stimuli) and 56.9 ± 9.2 (nasal stimuli). No significant differences between the genders were found. CONCLUSIONS: The normative nasalance scores provide essential reference information for clinicians who deal with nasalance disorders, especially patients with cleft palate. The nasalance scores in this study were established for Vietnamese children speaking in the central regional dialect and can be applied to both genders.

Long-term effects of Lee Silverman Voice Treatment on daily voice use in Parkinson's disease as measured with a portable voice accumulator.

This study examines the effects of an intensive voice treatment focusing on increasing voice intensity, LSVT LOUD® Lee Silverman Voice Treatment, on voice use in daily life in a participant with Parkinson's disease, using a portable voice accumulator, the VoxLog. A secondary aim was to compare voice use between the participant and a matched healthy control. Participants were an individual with Parkinson's disease and his healthy monozygotic twin. Voice use was registered with the VoxLog during 9 weeks for the individual with Parkinson's disease and 2 weeks for the control. This included baseline registrations for both participants, 4 weeks during LSVT LOUD for the individual with Parkinson's disease and 1 week after treatment for both participants. For the participant with Parkinson's disease, follow-up registrations at 3, 6, and 12 months post-treatment were made. The individual with Parkinson's disease increased voice intensity during registrations in daily life with 4.1 dB post-treatment and 1.4 dB at 1-year follow-up compared to before treatment. When monitored during laboratory recordings an increase of 5.6 dB was seen post-treatment and 3.8 dB at 1-year follow-up. Changes in voice intensity were interpreted as a treatment effect as no significant correlations between changes in voice intensity and background noise were found for the individual with Parkinson's disease. The increase in voice intensity in a laboratory setting was comparable to findings previously reported following LSVT LOUD. The increase registered using ambulatory monitoring in daily life was lower but still reflecting a clinically relevant change.

Feasibility of the Fake Phone Call: An iOS App for Covert, Public Practice of Voice Technique for Generalization Training.

OBJECTIVES: Generalization is a challenging phase in voice therapy, involving the implementation of a targeted voice technique in all spoken communication. Among other barriers to generalization, self-consciousness keeps patients from practicing and recalibrating their voice technique when they can be overheard (eg, at work). We developed an iOS application that covertly assists users in producing their target voice while they appear to be engaged in a cellular phone call. METHODS: To examine the feasibility of this Fake Phone Call, 11 adults in the generalization stage of voice therapy received a simulated call four times daily for 1 week. Usability, utility, and preliminary efficacy of the application were assessed via triangulated measures including self-report scales, a semistructured interview, and perceptual voice quality assessment of each completed phone call. RESULTS: Results indicated good feasibility, usability, and utility of the Fake Phone Call in eliciting target voice practice in public without bystander detection of the call's simulated nature. Preliminary efficacy data suggested a positive effect on vocal self-evaluation skill. CONCLUSION: The Fake Phone Call and comparable mobile strategies hold potential to facilitate covert public practice and generalization of a speaking-voice technique.

An Innovative Voice Analyzer "VA" Smart Phone Program for Quantitative Analysis of Voice Quality.

OBJECTIVE: The 'VA' Windows program that we developed in 2011 for analyzing voice quality quantitatively uses zerocross picking to find individual basic pitch periods. It has a simple and user-friendly user interface and high accuracy. This program determines the fundamental frequency, jitter, shimmer, PPQ, APQ, and signal-to-noise ratio (Ra). It needs only a general-purpose Windows PC, USB audio interface and a microphone. The aim of this study is to improve the version of the VA Windows program in English and to develop a VA smart phone program to allow wider use of objective acoustic analysis. STUDY DESIGN: Cross-sectional study. METHODS: Sustained vowel /a/ sounds from 40 subjects without evident vocal problems, and 40 subjects with slight hoarseness, were examined. We compared the analyzed data with data from other software (MDVP and Praat). For a comparison between VA for Windows and VA for a smart phone, sustained vowel /a/ sounds from six subjects without hoarseness were recorded with each system simultaneously. RESULTS: The normal voice and slightly hoarse voice data analyzed with VA showed a high correlation with most parameters from both MDVP and Praat. There was a strong correlation between the Windows and smart phone versions of VA in terms of the fundamental frequency and Ra. CONCLUSIONS: The results showed that the VA software was not inferior to the other acoustic analysis software tested. The simple and easy to use smart phone version may facilitate our goal of creating an objective, widely available method to evaluate hoarseness.

Acoustic Voice Quality Index - AVQI para o português brasileiro: análise de diferentes materiais de fala / Acoustic Voice Quality Index - AVQI for brazilian portuguese speakers: analysis of different speech material

RESUMO Objetivo Verificar a melhor amostra de fala para validação do AVQI para o português-brasileiro; identificar o contexto de fala com melhor correlação perceptivo-acústica e que possui maior acurácia diagnóstica com o AVQI. Método Gravações de 50 sujeitos (disfônicos e vocalmente saudáveis), incluindo: vogal/a/; meses do ano; números (1 a 20) e repetição das frases do CAPE-V. As amostras de fala foram editadas para conter três diferentes durações mais vogal: D1-fala completa; D2-fala com 3s de segmentos sonoros; D3-fala com ponto de corte pré-determinado. Três avaliadores realizaram a análise perceptivoauditiva (APA) das amostras combinadas em 3 contextos seguidos da vogal e deram um único escore do desvio vocal (G:0 a 3). Verificou-se qual estímulo de fala possuía melhor correlação perceptivo-acústica considerando o Gmédio; analisou-se qual estímulo possuía melhor acurácia diagnóstica considerando como presença ou ausência G<0,5 e G<0,68. Resultados A correlação perceptivo-acústica variou de r = 0,482 a r = 0,634 (Correlação de Spearman); números apresentou os valores mais elevados. O AVQI foi altamente específico e pouco sensível. Considerando G<0,5, a melhor sensibilidade e valor da curva ROC foi para frases em D3 (0,578;0,72). Considerando G<0,68, houve boa acurácia diagnóstica para números de 1 a 10 e maior sensibilidade para números de 1 a 20. Conclusão Melhor correlação perceptivo-acústica foi para números, 1 a 10. As frases do CAPE-V produziram melhor acurácia diagnóstica com G<0,5, números apresentou elevada acurácia diagnóstica com G<0,68. Números é bastante usual na clínica brasileira, logo, sugere-se seu uso para validação e análises do AVQI.

ABSTRACT Purpose This study aimed to verify the best speech material for the AVQI for Brazilian Portuguese language and identify the best validity results between the auditory perceptual judgment (APJ) and the AVQI score on different speech materials. Methods We recorded voice samples of 50 individuals (dysphonic and vocally healthy) of several continuous speech (cs) variants (i.e., months of the year, numbers 1 to 20, and CAPE-V sentences) and attached the vowel /a/ in each case. The recorded samples were edited to three different durations of cs variants plus vowel: D1-total speech material; D2-customized speech material without voiceless parts; D3-pre-defined cut-off point speech material. These samples were submitted to three voice experts who judged the overall voice quality; and the AVQI analysis. AVQI's precision and concurrent validity were evaluated considering a Gmean threshold of G<0.5 and G<0.68. Results The concurrent validity of AVQI and APJ ranged from r = 0.482 to r = 0.634. Numbers presented higher values for all durations. For G<0.5, the best sensitivity and area under the ROC curve was for CAPE-V sentences at D3 (57.8%; 72%). For G<0.68, numbers 1 to 10 had the best diagnostic accuracy and numbers 1 to 20 had the best sensitivity. Conclusion Numbers from 1 to 10 had the best correlation results between APJ and AVQI. For G<0.5, sentences had the best diagnostic accuracy; while for G<0.68, numbers had the best diagnostic accuracy. Numbers are commonly used in the Brazilian clinic routine. According to the validity results and daily clinical practice in Brazil, we suggest the use of numbers as cs for concatenated voice samples of voice quality assessments.

Simultaneous electromagnetic articulography and electroglottography data acquisition of natural speech.

This paper reports on the concurrent use of electroglottography (EGG) and electromagnetic articulography (EMA) in the acquisition of EMA trajectory data for running speech. Static and dynamic intersensor distances, standard deviations, and coefficients of variation associated with inter-sample distances were compared in two conditions: with and without EGG present. Results indicate that measurement discrepancies between the two conditions are within the EMA system's measurement uncertainty. Therefore, potential electromagnetic interference from EGG does not seem to cause differences of practical importance on EMA trajectory behaviors, suggesting that simultaneous EMA and EGG data acquisition is a viable laboratory procedure for speech research.

Articulatory, acoustic, and prosodic accommodation in a cooperative maze navigation task.

This study uses a maze navigation task in conjunction with a quasi-scripted, prosodically controlled speech task to examine acoustic and articulatory accommodation in pairs of interacting speakers. The experiment uses a dual electromagnetic articulography set-up to collect synchronized acoustic and articulatory kinematic data from two facing speakers simultaneously. We measure the members of a dyad individually before they interact, while they are interacting in a cooperative task, and again individually after they interact. The design is ideally suited to measure speech convergence, divergence, and persistence effects during and after speaker interaction. This study specifically examines how convergence and divergence effects during a dyadic interaction may be related to prosodically salient positions, such as preceding a phrase boundary. The findings of accommodation in fine-grained prosodic measures illuminate our understanding of how the realization of linguistic phrasal structure is coordinated across interacting speakers. Our findings on individual speaker variability and the time course of accommodation provide novel evidence for accommodation at the level of cognitively specified motor control of individual articulatory gestures. Taken together, these results have implications for understanding the cognitive control of interactional behavior in spoken language communication.

Uncertainty of speech level parameters measured with a contact-sensor-based device and a headworn microphone.

This work estimates the uncertainty contributions of speech level parameters measured with a contact-sensor-based device and a headworn microphone. Four contributions are considered: (1) instrumental uncertainty, related to device calibration; (2) method repeatability and (3) reproducibility, estimated through repeated measurements without and with device repositioning, respectively; (4) source reproducibility, due to the variability of human speech. To ascertain changes in speech production, differences between measures should be at least higher than the expanded uncertainty. In the case of device repositioning, the expanded uncertainty combines contributions (1), (3), and (4). When the device is not repositioned, it combines contributions (2) and (4).

Evidence of validity and reliability of a phonological assessment tool. / Evidências de validade e fidedignidade de um instrumento de avaliação fonológica.

PURPOSE: To present evidence of the validity and reliability of a phonological assessment tool developed to assess the phonological inventory of Brazilian Portuguese. METHODS: The study included 866 children aged between 3 and 8:11 years, divided into three groups: typical, control and clinical. Participants were evaluated using a phonological assessment software, which prompted the spontaneous naming of a series of images. The children's responses were audio recorded and transcribed at the time of the assessment, by the software itself. The Cronbach's alpha coefficient was used to evaluate the internal consistency of the instrument for reliability and validity purposes. Criterion validity was examined by comparing the performance of different groups using Student's t-test for independent samples. Intra- and inter-rater agreement were investigated using Kendall's tau. Results were considered significant at p ≤ 0.05. RESULTS: The present study provided evidence of validity and reliability (internal consistency) for this phonological assessment tool, confirming the reliability of its items and demonstrating excellent agreement rates between examiners regarding its scoring (intra- and inter-rater reliability). The criterion validity assessment demonstrated that the control group outperformed the clinical group across all phonemes, showing that test scores were successful in identifying children with speech sound disorders (phonological disorders). CONCLUSION: The present findings provide strong evidence of the validity and reliability of this phonological assessment tool.

OBJETIVO: Apresentar evidências de validade e fidedignidade de um instrumento de avaliação fonológica (INFONO) desenvolvido para avaliar os fonemas do Português Brasileiro. MÉTODO: Participaram do estudo 866 crianças com idades entre 3 e 8:11 anos, divididas em grupos: típico, controle e clínico. Os participantes foram avaliados pelo INFONO por nomeação espontânea. A produção da criança foi gravada e transcrita no momento da avaliação, no próprio software. Para análise de validade e fidedignidade, foram analisadas a consistência interna a partir da técnica Alpha de Cronbach. Para a validade de critério, comparou-se o desempenho entre os grupos através do teste t de Student para amostras independentes. A fidedignidade foi analisada pela concordância intra e interavaliadores por meio do Teste de Kendall. Considerou-se significância quando p ≤0,05. RESULTADOS: O INFONO apresentou evidências de validade e fidedignidade (consistência interna), indicando uma confiabilidade satisfatória dos itens, bem como excelente concordância entre os avaliadores em relação aos escores do teste (confiabilidade intra e interavaliador). Em relação à validade de critério, o desempenho do grupo clínico para todos os fonemas foi inferior ao grupo controle, mostrando que os escores são sensíveis para identificar crianças com desvio fonológico. CONCLUSÃO: O INFONO apresentou fortes evidências de validade e fidedignidade.

Using ultrasound and nasalance to separate oral and nasal contributions to formant frequencies of nasalized vowels.

The experimental method described in this manuscript offers a possible means to address a well known issue in research on the independent effects of nasalization on vowel acoustics: given that the separate transfer functions associated with the oral and nasal cavities are merged in the acoustic signal, the task of teasing apart the respective effects of the two cavities seems to be an intractable problem. The proposed method uses ultrasound and nasalance to predict the effect of lingual configuration on formant frequencies of nasalized vowels, thus accounting for acoustic variation due to changing lingual posture and excluding its contribution to the acoustic signal. The results reveal that the independent effect of nasalization on the acoustic vowel quadrilateral resembles a counter-clockwise chain shift of nasal compared to non-nasal vowels. The results from the productions of 11 vowels by six speakers of different language backgrounds are compared to predictions presented in previous modeling studies, as well as discussed in the light of sound change of nasal vowel systems.