Persona: Filipa M.B., Lã
Cargando...
Dirección de correo electrónico
ORCID
0000-0001-5560-7406
Fecha de nacimiento
Proyectos de investigación
Unidades organizativas
Puesto de trabajo
Apellidos
Filipa M.B., Lã
Nombre de pila
Nombre
30 resultados
Resultados de la búsqueda
Mostrando 1 - 10 de 30
Publicación Female Voice-Related Sexual Attractiveness to Males: Does it Vary With Different Degrees of Conception Likelihood?(Elsevier, 2023-05) Filipa M.B., Lã; Granqvist, Svante; Cova, Tania; Pais, Alberto C.; Polo Cano, Nuria; Filipa M.B., LãPrevious investigations have found that female voice-related attractiveness to males increases when both conception likelihood (CL) and voice fundamental frequency (fo) are elevated. To test this hypothesis, we conducted a perceptual experiment where 78 heterosexual males rated sexual attractiveness of 9 female voice samples, recorded at menstrual, follicular and luteal phases of the menstrual cycle under two double-blinded randomly allocated conditions: a natural menstrual cycle (placebo condition) and when using an oral contraceptive pill (OCP condition). The voice samples yielded a total of 54 stimuli that were visually sorted and rated using Visor software. Concentrations of estrogens, progesterone and testosterone were analyzed, and measurements of speaking fundamental frequency (sfo) and its standard deviation (sfoSD), fo derivative (dfo) and fo slope were made. A multilevel ordinal logistic regression model nested in listeners and in females, and adjusted by phase and condition, was carried out to assess the association between ratings and: (1) phases and conditions; (2) sex steroid hormonal concentrations; and (3) voice parameters. A high probability of obtaining high ratings of voice sexual attractiveness was found for: (1) menstrual phase of placebo use and follicular phase of OCP use; (2) for low estradiol to progesterone ratio and testosterone concentrations; and (3) for low dfo. The latter showed a moderate statistical association with ratings of high attractiveness, as compared with the small association found for the remaining variables. It seems that the voice is a weak cue for female CL. Female sexual attraction to males may be a consequence of what females do in order to regulate their extended sexuality across the menstrual cycle rather than of estrus cues, the use of paralinguistic speech patterns being an example.Publicación Professional male singers’ formant strategies for the vowel /a/(Taylor & Francis, 2011-11-15) Sundberg, Johan; Filipa M.B., Lã; Gill, Brian P.; Filipa M.B., LãCertain spectrum characteristics have been identified as important for register equalization around the male passaggio, an effect ascribed to formant tuning although descriptions of formant tuning diverge. Eight professional singers sang scales including their passaggio range on different vowels, applying two formant tuning strategies as found in (Citation) classical and (Citation) non-classical singing. Formant frequencies were measured using inverse filtering. Results revealed differences between the two strategies. For the classical formant tuning, systematic changes of formant frequencies with pitch were observed. For the highest note sung on /a/, was below the second partial and in the vicinity of the third. Similar spectrum characteristics were achieved by different and values between singers.Publicación Glottal airflow and glottal area waveform characteristics of flow phonation in untrained vocally healthy adults(Elsevier, 2022-01) Patel, Rita R.; Sundberg, Johan; Gill, Brian P.; Filipa M.B., Lã; Filipa M.B., LãObjective To examine flow phonation characteristics with regard to vocal fold vibration and voice source properties in vocally healthy adults using multimodality voice measurements across various phonation types (breathy, neutral, flow, and pressed) and loudness conditions (typical, loud, and soft). Participants and Methods Vocal fold vibration, airflow, acoustic, and subglottal pressure was analyzed in 13 untrained voices (six female and seven male). Participants repeated the syllable / pæ:/ using breathy, neutral, flow, and pressed phonation during typical, loud, and soft loudness conditions. Glottal area (GA) waveforms were extracted from high-speed videoendoscopy; glottal flow was derived from inverse filtering the airflow or the audio signal; and subglottal pressure was measured as the intraoral pressure during /p/ occlusion. Results Changes in phonation type and loudness conditions resulted in systematic variations across the relative peak closing velocity derived from the GA waveform for both males and females. Amplitude quotient derived from the flow glottogram varied across phonation types for males. Conclusion Multimodality evaluation using the GA waveform and the inverse filtered waveforms revealed a complex pattern that varied as a function of phonation types and loudness conditions across males and females. Emerging findings from this study suggests that future large-scale studies should focus on spatial and temporal features of closing speed and closing duration for differentiating flow phonation from other phonation types in untrained adults with and without voice disorders.Publicación Physiology and its impact on the performance of singing(Oxford University Press, 2019) Filipa M.B., Lã; Gill, Brian P.; Filipa M.B., LãPublicación Intonation and Expressivity: A Single Case Study of Classical Western Singing(Elsevier, 2013-05) Sundberg, Johan; Himonides, Evangelos; Filipa M.B., LãPrevious studies have shown that singers tend to sharpen phrase-peak tones as compared with equally tempered tuning (ETT). Here we test the hypothesis that this can serve the purpose of musical expressivity. Data were drawn from earlier recordings, where a professional baritone sang excerpts as void of musical expression as he could (Neutral) and as expressive as in a concert (Concert). Fundamental frequency averaged over tones was examined and compared with ETT. Phrase-peak tones were sharper in excited examples, particularly in the Concert versions. These tones were flattened to ETT using the Melodyne software. The manipulated and original versions were presented pairwise to a musician panel that was asked to choose the more expressive version. By and large, the original versions were perceived as more expressive, thus supporting the common claim that intonation is a means for adding expressivity to a performance.Publicación Self-Perceived Voice Handicap During COVID19 Compulsory Facemask Use: A Comparative Study Between Portuguese and Spanish Speakers(Elsevier, 2024-08-02) Polo Cano, Nuria; Filipa M.B., LãThis study investigates self-perceptions of voice-related handicap as a function of facemask use in the general working population during the COVID19 outbreak, using the Voice Handicap Index (VHI). Each VHI item was answered twice in a row; the first answer referred to the condition of not wearing a facemask (henceforth, the Without condition) and the second to the condition of using a facemask (henceforth, the With condition). VHI scores were collected via Google Forms (Google, Mountain View, California), targeting 2 groups of speakers of different nationalities, Portuguese (n = 261) and Spanish (n = 297). A Wilcoxon test was carried out to compare VHI scores between With and Without conditions for each group of speakers; a Mann-Whitney U test was used to compare groups within each condition. Results suggested that VHI overall scores and scores for all dimensions were higher for the With condition, for both Portuguese and Spanish speakers. When comparing groups of speakers, Spanish speakers presented higher scores for functional and emotional dimensions, for both With and Without conditions. In addition, the overall score for the Without condition was higher for Spanish speakers. No differences between groups were found for the total VHI score for the With condition. When comparing overall VHIdiff between speakers, that is, the difference in the VHI total score between With and Without conditions, no significant differences could be found. Thus, a multiple regression analysis was carried out between the VHIdiff and the independent variables of interest: age, sex, smoking habits, professional occupation, nationality, facemask type and its hours of use. The resulting model providing the highest association suggested that 2.5% of the variation in overall VHIdiff total score could be associated with sex, smoking habits, and professional level. Female smokers who use their voices during prolonged hours at work (e.g., teachers, lawyers, sales people) presented a higher VHI total score when wearing a mask. Future voice-related health interventions should address preventive strategies towards speaking behaviors leading to vocal fatigue and vocal effort as a consequence of compulsory facemask use, especially with respect to female professional voice users who smokePublicación Effects of the menstrual cycle and the oral contraception on singer´s pitch control(American Speech-Language-Hearing Association (ASHA), 2012-02-01) Filipa M.B., Lã; Sundberg, Johan; Howard, David M.; Sa Couto, Pedro; Freitas, Adelaide; Filipa M.B., LãPurpose: Difficulties with intonation and vibrato control during the menstrual cycle have been reported by singers; however, this phenomenon has not yet been systematically investigated. Method: A double-blind randomized placebo-controlled trial assessing effects of the menstrual cycle and use of a combined oral contraceptive pill (OCP) on pitch control in singing is presented. Audio-electrolaryngograph recordings were made and blood samples were taken from 9 singers in each of the 3 phases of the menstrual cycle both under the placebo and the OCP conditions for a total of 6 months. Participants sang an exercise consisting of an ascending octave followed by a descending major triad, starting on pitches F4 and B4. Pitch control was assessed in terms of the octave's deviations from pure intonation and of the vibrato rate and extent. Results: Significant differences were found between the 3 phases of the cycle regarding octave size only for pitch F5 during OCP use. Significant vibrato rate differences between placebo and OCP conditions were found only for pitch F5. Conclusion: OCP use may have an effect on pitch control in singers. Possible explanations point to a complex interaction between hormonal milieu and pitch control, enhancing the need for longitudinal studies.Publicación Menopausal Voice-Related Work Limitation Scale (MenoVWL): development and validation(Elsevier, 2022-11-30) Filipa M.B., Lã; Mateos Ramírez, Ana; Ardura Martínez, Diego; Barro Fiuza, Mauro; Polo Cano, Nuria; Filipa M.B., LãObjectives Menopause has been reported to affect the voice of female professional voice users (FPVUs). The present study aims at the development and validation of a scale to measure self-perceived menopausal voice-related limitation to work in FPVUs, henceforth the Menopausal Voice-Related Work Limitation Scale (MenoVWL). Methods Items were drawn from previous studies on impacts of sex steroid hormones on voice, available validated scales, and in-depth interviews with post-menopausal FPVUs. A preliminary version with 16 items was evaluated by a panel of 15 voice experts. The resulting revised version was filled in online, together with questions on current endocrinological reproductive status and related symptoms, history of amenorrhea, professional occupation, and demographic information. Responses concerning only professional voice users were selected and inclusive and exclusive criteria were applied for correct allocation of participants into pre- and post-menopausal stages within a restrict age range;192 responses were subject to factorial analysis for MenoVWL validation. Cronbach's alpha measured internal reliability. The scale was tested by comparing MenoVWL scores between pre- and post-menopausal FPVUs (98 and 94, respectively). Results Thirteen items were retained from the expert panel evaluation. Items presented a high Content Validity Index (.94 out of 1) and high Item Acceptance Ratio (86.25 %). Both exploratory and confirmatory factorial analysis rendered one dimension scale with an excellent internal consistency (Cronbach's alpha = .9). The results of a Mann-Whitney test showed a higher MenoVWL score for post- as compared to pre-menopausal FPVUs (Z = - 2.818; P = .005). Conclusions MenoVWL is a comprehensive and validated scale with a known factor structure. It constitutes a health care and safety outcome self-perceived measure of value to the early detection of voice-related limitations to work in FPVUs during menopause.Publicación Avaliação aerodinâmica e acústica da fonte de voz(Thieme Revinter, 2022) Sundberg, Johan; Filipa M.B., Lã; Filipa M.B., LãPublicación Prácticas vocales basadas en la evidencia(['Elsevier', 'Asociación Española de Logopedia, Foniatría y Audiología e Iberoamericana de Fonoaudiología'], 2017-09) Filipa M.B., Lã; Filipa M.B., LãTradicionalmente la pedagogía de la voz se ha basado en un modelo de ense˜nanza-aprendizaje a partir de dominar la práctica transmitida oralmente, en la que se aplicaba untipo de aprendizaje observacional centrado en el producto artístico final. Este modelo se ha idosustituyendo constantemente con el tiempo. Actualmente, la organización social del trabajoen las economías globalizadas ha visto la necesidad de replantear la educación de forma quelas generaciones futuras pueden responder a las necesidades de alumnos que aprenden de porvida, que destacan en el uso de habilidades de sistemas de información, que son flexibles y vocalse adaptan a la falta de estabilidad en el trabajo, y que son capaces de manejar sus propiasoportunidades de emprendimiento. ¿Cómo se puede aplicar todo esto a la pedagogía vocal?Este trabajo tiene como objetivo la búsqueda de respuestas a estas cuestiones, además decontribuir a la discusión que se generó en la 10th Pan European Voice Conference, «PedagogíaVocal. ¿Qué necesitamos?». Se expone la lógica de usar prácticas reflexivas en la educación vocaly que realcen las habilidades metacognitivas del estudiante, al utilizar el conocimiento basadoen la evidencia. La provisión de feedback significativo y el uso de un enfoque holístico en laense˜nanza de la voz se presentan como los medios necesarios para responder a las necesidadesindividuales de los distintos aprendices. Los modelos de ense˜nanza basados en la resolución deproblemas y en el aprendizaje centrado en el alumno se proponen como elementos clave a lahora de desarrollar profesionales de la voz conscientes, que son los que mejor cumplen con lasdemandas de conocimiento de las sociedades del siglo xxi.
- «
- 1 (current)
- 2
- 3
- »