Tecnologia auditiva assistiva em usuários de implante coclear em ambientes reverberantes com múltiplas fontes de ruído / Assistive listening technology in cochlear implant users in reverberant environments with multiple noise sources

RESUMO Objetivo Avaliar a contribuição da tecnologia de escuta assistida em usuários de implante coclear (IC) em situações de reverberação e ruído. Métodos Estudo transversal prospectivo aprovado pelo Comitê de Ética Institucional (CAAE 8 3031418.4.0000.0068). Foram selecionados adolescentes e adultos usuários de IC com surdez pré ou pós-lingual. Para usuários bilaterais, cada orelha foi avaliada separadamente. O reconhecimento de fala foi avaliado por meio de listas gravadas de palavras dissílabas apresentadas a 65 dBA a 0° azimute com e sem o Mini Microfone2 (Cochlear™) conectado ao processador de fala Nucleus®6. A reverberação da sala foi medida como 550 ms. Para avaliar a contribuição do dispositivo de escuta assistida (DEA) em ambiente reverberante, o reconhecimento de fala foi avaliado no silêncio. Para avaliar a contribuição do DEA em reverberação e ruído, o reconhecimento de fala foi apresentado a 0° azimute com o ruído proveniente de 8 alto-falantes dispostos simetricamente a 2 metros de distância do centro com ruído de múltiplos falantes usando relação sinal-ruído de +10dB. Para evitar viés de aprendizado ou fadiga, a ordem dos testes foi randomizada. A comparação das médias foi analisada pelo teste t para amostras pareadas, adotando-se nível de significância de p<0,005. Resultados Dezessete pacientes com idade média de 40 anos foram convidados e concordaram em participar, sendo 2 participantes bilaterais, totalizando 19 orelhas. Houve contribuição positiva significante do Mini Mic2 na reverberação e ruído+reverberação (p<0,001). Conclusão DEA foi capaz de melhorar o reconhecimento de fala de usuários de IC tanto em situações de reverberação quanto ruidosas.

ABSTRACT Purpose This study aimed to evaluate the contribution of assistive listening technology with wireless connectivity in cochlear implant (CI) users in reverberating and noise situations. Methods Prospective cross-sectional study approved by the Institutional Ethics Committee (CAAE 8 3031418.4.0000.0068). Adolescents and adults CI users with pre- or post-lingual deafness were selected. For bilateral users, each ear was assessed separately. Speech recognition was assessed using recorded lists of disyllabic words presented at 65 dBA at 0° azimuth with and without the Wireless Mini Microphone 2 (Cochlear™) connected to the Nucleus®6 speech processor. Room reverberation was measured as 550 ms. To assess the contribution of the assistive listening device (ALD) in a reverberating environment, speech recognition was assessed in quiet. To assess the contribution of the ALD in reverberation and noise, speech recognition was presented at 0° azimuth along with the noise coming from 8 loudspeakers symmetrically arranged 2 meters away from the center with multi-talker babble noise using signal to noise ratio of +10dB. To avoid learning bias or fatigue, the order of the tests was randomized. Comparison of means was analyzed by t test for paired samples, adopting significance level of p <0.005. Results Seventeen patients with a mean age of 40 years were invited and agreed to participate, with 2 bilateral participants, totaling 19 ears assessed. There was a significant positive contribution from the Mini Mic2 in reverberation, and noise+reverberation (p <0.001). Conclusion ALD was able to improve speech recognition of CI users in both reverberation and noisy situations.

Imagetic and affective measures of memory reverberation diverge at sleep onset in association with theta rhythm.

The 'day residue' - the presence of waking memories into dreams - is a century-old concept that remains controversial in neuroscience. Even at the psychological level, it remains unclear how waking imagery cedes into dreams. Are visual and affective residues enhanced, modified, or erased at sleep onset? Are they linked, or dissociated? What are the neural correlates of these transformations? To address these questions we combined quantitative semantics, sleep EEG markers, visual stimulation, and multiple awakenings to investigate visual and affect residues in hypnagogic imagery at sleep onset. Healthy adults were repeatedly stimulated with an affective image, allowed to sleep and awoken seconds to minutes later, during waking (WK), N1 or N2 sleep stages. 'Image Residue' was objectively defined as the formal semantic similarity between oral reports describing the last image visualized before closing the eyes ('ground image'), and oral reports of subsequent visual imagery ('hypnagogic imagery). Similarly, 'Affect Residue' measured the proximity of affective valences between 'ground image' and 'hypnagogic imagery'. We then compared these grounded measures of two distinct aspects of the 'day residue', calculated within participants, to randomly generated values calculated across participants. The results show that Image Residue persisted throughout the transition to sleep, increasing during N1 in proportion to the time spent in this stage. In contrast, the Affect Residue was gradually neutralized as sleep progressed, decreasing in proportion to the time spent in N1 and reaching a minimum during N2. EEG power in the theta band (4.5-6.5 Hz) was inversely correlated with the Image Residue during N1. The results show that the visual and affective aspects of the 'day residue' in hypnagogic imagery diverge at sleep onset, possibly decoupling visual contents from strong negative emotions, in association with increased theta rhythm.

Quality of Life and Acoustic Comfort in Educational Environments of Curitiba, Brazil.

BACKGROUND: It is believed that poor classroom acoustics leads to lower levels of student learning and exposes teachers vocal folds to greater physical wear and tear. OBJECTIVE: This study sought to compare the quality of life by World Health Organization (whoqol-bref) questionnaire of 61 teachers working at schools with different acoustic conditions. METHODS: This paper reports on a descriptive exploratory study aimed at ascertaining the following: (1) outdoor sound pressure levels in the immediate surroundings of two primary schools; (2) background noise levels inside classrooms; (3) reverberation times in classrooms; (4) the teacher's perception of noise in the work environment; (5) the teacher's vocal intensity in the classroom; and (6) the teacher's perceived quality of life. RESULTS: It was found that the quality of life of teachers, as well as the major causes of acoustic discomfort, do not stem from a source outside the classroom, halls, and physical education classes. Instead, they originate inside the classroom and are caused by students during school hours; the teachers' vocal intensity exceeds the limits of tolerability both in schools that provide acoustic comfort and in those that do not. CONCLUSIONS: The basic conditions required to ensure the health of the participants in this study during their workday were found to be unsatisfactory.

The Importance of Reverberation for the Design of Neonatal Incubators.

Low frequency noises are predominant in neonatal intensive care units (NICUs). Some studies affirm that neonates can perceive noises from 113 Hz, and can therefore be affected by sound sources with high spectral content at low frequencies (e.g., incubator engine, air fan). Other studies suggest that reverberation amplifies noise within incubators. In this paper, the reverberation time (T, T 30) within an incubator with standard dimensions was measured in one-third octave bands. To get reliable results, the T was measured in 15 positions at the neonate's ear height, in a room with low T values (to reduce the influence of the room in the results), using an impulsive sound method. Results show a heterogeneous T distribution at the neonate's ear height, with maximum average T differences between positions of 1.07 s. The highest average T of all microphone positions is 2.27 s at 125 Hz, an extremely high mean value for such a small space. As the frequency of electrical devices in America is 60 Hz, some harmonics lay within the one-third octave band of 125 Hz, and therefore may create a very reverberant and inappropriate acoustic environment within the audible spectrum of neonates. As the acoustic environment of the incubator and the room are coupled, it is expected that the results are higher in the NICUs than in the room where the measurements were conducted, as NICUs are more reverberant. Therefore, it is recommended that the T will be limited in the international standards, and that incubator designers take it into account.

Influence of the NICU on the Acoustic Isolation of a Neonatal Incubator.

The neonatal intensive care unit (NICU) is a very noisy place as compared to the intrauterine environment. To protect the neonate's health, international guidelines suggest avoiding noise levels above 45 dB in NICUs, but this recommendation is not normally met. The incubator acoustic isolation and the acoustic features of the NICU play important roles in determining the noise measured inside the incubator. In this study, the influence of two types of rooms, one with sound-absorbent covering and the other with reverberant surfaces, on the acoustic isolation of a neonatal incubator was evaluated using three acoustic isolation indexes: the level difference, the apparent sound reduction index, and the standardized level difference. Results show that the acoustic isolation of the incubator is very poor, with a level difference below 11 dBA at all frequencies. At 62.5 Hz, the level difference measured in both rooms exhibits a negative value, indicating that the incubator amplifies the noise coming from the NICU. Isolation of the incubator is poor, and the reverberation time (RT) of the containing room influences RT of the incubator, which is consequently higher when the containing room is reverberant; for example, the incubator RT in the reverberant NICU is 0.72 s higher at 500 Hz than that in a room with sound-absorbent covering.

Avaliação do Naída CI Q70 e estratégia UltraZoom para o reconhecimento de fala em situações reverberantes e com ruído competitivo / Assessment of the benefits of the Naída CI Q70 and its Ultrazoom strategy for speech recognition in reverberating and noisy listening conditions

RESUMO Objetivo identificar a contribuição do microfone omnidirecional (T-Mic) e microfone direcional adaptativo (UltraZoom) do processador de som Naída CIQ70 para o reconhecimento da fala no ruído e em ambiente reverberante. Identificar a contribuição do processador de som Naída CIQ70 para usuários do processador Harmony. Métodos participaram do estudo sete adultos com implante coclear unilateral, usuários do processador de som Harmony. O reconhecimento de sentenças foi avaliado em silêncio, em sala reverberante (RT60 de 553 ms) e ruído de 42,7 dBA (Leq), com os processadores Harmony e Naída CIQ70. A contribuição do microfone direcional UltraZoom foi avaliada no ruído. As sentenças gravadas foram apresentadas a 0° azimute. O ruído (babble noise) foi apresentado a + 5 dB SNR, a 90° azimute. Os participantes avaliaram subjetivamente a clareza do som e a dificuldade de escutar nas várias condições do teste. Resultados a média do reconhecimento de sentenças no silêncio com reverberação foi de 38,5% com o Harmony e 66,5% com o Naída CIQ70. A pontuação média de reconhecimento de sentenças no ruído foi de 40,5% com o Naída CIQ70, sem UltraZoom, e de 64,5% com UltraZoom. Nas classificações subjetivas de clareza do som e facilidade de escuta no ruído, nenhuma diferença foi identificada entre as condições de teste. Conclusão para usuários experientes do processador de som Harmony, a compreensão da fala em silêncio em uma sala reverbente foi significativamente melhor com o Naída CIQ70. O uso de uma tecnologia de microfone direcional adaptativa (UltraZoom) contribuiu para o reconhecimento de fala no ruído.

Abstract Purpose 1) To measure speech understanding in noise with the Naída Q70 in the omnidirectional microphone mode (T-Mic) and adaptive directional microphone mode (UltraZoom) in reverberating acoustics and noisy conditions. 2) To measure improvement in speech understanding with use of the Advanced Bionics (AB) Naída Q70 sound processor for existing Harmony users. Methods Seven adult unilateral cochlear implant (CI) recipients, who were experienced users of the Harmony sound processor, participated in the study. Sentence recognition was evaluated in quiet in a reverberating room, with Harmony and Naída CI Q70 processors. Effectiveness of Naída CI Q70's UltraZoom directional microphone was evaluated in noise. Target stimuli were recorded Portuguese sentences presented from 0° azimuth. Twenty-talker babble was presented at +5dB SNR from ±90° azimuth. In addition to sentence recognition, the participants also rated the clarity of sound and difficulty of listening in the various test conditions. In order to evaluate the outcomes under more realistic acoustic conditions, tests were conducted in a non-sound treated reverberant room (RT60 of 553 ms and noise floor of 42.7 dBA (Leq). Results The average sentence recognition in quiet in the reverberant non-sound treated room was 38.5% with the Harmony and 66.5% with Naída CI Q70. The average sentence recognition score in noise was 40.5% with Naída CI Q70 without UltraZoom and 64.5% with UltraZoom. For subjective ratings of sound clarity and listening ease in noise no difference were identified between the test conditions. Conclusion For experienced users of the Harmony sound processor, speech understanding in quiet in a reverberating room was significantly improved with the Naída CI Q70. The use of an adaptive directional microphone technology (UltraZoom) enhanced speech perception in noise.

Sound Spectrum Influences Auditory Distance Perception of Sound Sources Located in a Room Environment.

Previous studies on the effect of spectral content on auditory distance perception (ADP) focused on the physically measurable cues occurring either in the near field (low-pass filtering due to head diffraction) or when the sound travels distances >15 m (high-frequency energy losses due to air absorption). Here, we study how the spectrum of a sound arriving from a source located in a reverberant room at intermediate distances (1-6 m) influences the perception of the distance to the source. First, we conducted an ADP experiment using pure tones (the simplest possible spectrum) of frequencies 0.5, 1, 2, and 4 kHz. Then, we performed a second ADP experiment with stimuli consisting of continuous broadband and bandpass-filtered (with center frequencies of 0.5, 1.5, and 4 kHz and bandwidths of 1/12, 1/3, and 1.5 octave) pink-noise clips. Our results showed an effect of the stimulus frequency on the perceived distance both for pure tones and filtered noise bands: ADP was less accurate for stimuli containing energy only in the low-frequency range. Analysis of the frequency response of the room showed that the low accuracy observed for low-frequency stimuli can be explained by the presence of sparse modal resonances in the low-frequency region of the spectrum, which induced a non-monotonic relationship between binaural intensity and source distance. The results obtained in the second experiment suggest that ADP can also be affected by stimulus bandwidth but in a less straightforward way (i.e., depending on the center frequency, increasing stimulus bandwidth could have different effects). Finally, the analysis of the acoustical cues suggests that listeners judged source distance using mainly changes in the overall intensity of the auditory stimulus with distance rather than the direct-to-reverberant energy ratio, even for low-frequency noise bands (which typically induce high amount of reverberation). The results obtained in this study show that, depending on the spectrum of the auditory stimulus, reverberation can degrade ADP rather than improve it.

Effects of classroom-acoustic change on the attention level of university students

Diversas investigaciones han señalado la necesidad de modificar los espacios de aprendizaje para favorecer las condiciones de salud-trabajo-vida de los docentes y para mejorar las condiciones de aprendizaje de los estudiantes. Dichas modificaciones implican cambios arquitecturales, ya sea a través de amplificadores de sonido o deflectores, que permiten variar los niveles de reverberación del sonido y que por tanto modifican las necesidades de modular la voz y el desgaste asociado en el docente. El objetivo de la investigación realizada fue indagar el efecto del nivel de ruido, de la reverberación y de barreras acústicas, en el nivel atencional de 141 estudiantes de una universidad privada de la ciudad de Bogotá (Colombia). Se utilizaron dos estrategias de medición de la atención. La primera de ellas contó con la medición del nivel atencional a través de un cuestionario con palabras pertenecientes a la clase y no pertenecientes a la misma, pero que tuvieran relación con la asignatura. La segunda estrategia midió el Índice de Atención (IA), el cual estuvo conformado por el promedio de las desviaciones de la mirada a un punto, calculado sobre una cuadrícula. Los resultados señalan diferencias significativas entre los grupos intervenidos y no intervenidos. Esta diferencia es significativa tanto para la estrategia de medición tradicional de la atención, a través del cuestionario con la lista de palabras, como para la estrategia alternativa de medición del Índice de Atención, a través de la cuadrícula. Este estudio señala que cambios específicos dirigidos a disminuir los valores de reverberación en los salones de clase, afectan positivamente los niveles de atención y el desempeño de estudiantes. Lo que indica la necesidad de mejorar las condiciones acústicas de los sitios de aprendizaje para así lograr tanto mejores comprensiones de los contenidos por parte de los estudiantes como menor desgaste en la voz de los docentes.

Noise in learning environments has proven to be a big source of health problems not only for teachers, but also for students. Noise is considered as every type of sound that we are not interested in hearing, whereas a useful sound is the one we want to perceive. Studies that analyze the relationship between the effects of noise and attention processes are developed within the idea that sound stimulation acts intermittently as an activator and therefore it can generate an over-activation in the individual due to the distortion caused by this diffused stimulation on the attention process. Furthermore, researches also show that the presence of noise affects performance by making subjects focus their attention upon aspects of the task defined as relevant. Researchers have stated the importance of changing learning spaces in order to favor the health- work-life conditions of teachers and to improve the students’ learning conditions. These alterations include architectural changes, using sound-field amplification, or ceiling baffles and reflect ors that allow changing the reverberation levels of sound in order to modify the need teachers have to modulate their voice and avoid wearing it out. Is common that regulations on the acoustic characteristics of many places set general requisites that are minimal and insufficient to control noise and reverberation, and that are not in line with the guidelines on intermittent sounds. The objective of this research was to examine the effect of noise, reverberation, and acoustical barriers on the level of attention of 141 students from a private university in . Modular panels with acoustic properties were used for an acoustic intervention in some classrooms, intending to reduce the noise levels. Then, all the students of four courses of Mathematics and Statistics were considered. At least two courses had classes in the class rooms that had the acoustic intervention at the beginning of the semester, and the same teacher should be teaching those courses (in both altered and unaltered classrooms) in order to exclude differences associated with the teacher. Since the investigation aimed to measure the level of attention of the students that were in both classrooms. We designed two measurement strategies that correspond to the two types of researches that study the relationship between noise and attention. However, this study presents important differences regarding the strategies that are traditionally associated with embedded figures tests, tests regarding global shape processing and details, or surveillance tasks, because these situations were not controlled within a lab but real noise situations in a classroom. Two strategies of attention measurement were used. The first strategy measured the level of attention through a questionnaire with words belonging and not belonging to the class, but related to the subject. The second strategy allows calculating the Attention Index (AI), which would be measured by the average of the times students look away to a specific point, this is indicated in a grid. The results point towards significant differences between the acoustically intervened and non-intervened groups. That difference is significant both for the traditional attention measurement strategy through a questionnaire with word list and for the alternate Attention Index (AI) measurement strategy using a grid. This study shows that noise levels have an important effect on the students’ attention processes, and that specific changes, aimed at decreasing reverberation values in classrooms affect positively the levels of attention and student performance. They also indicate the need to improve the acoustic conditions of learning sites in order to allow students to achieve a better understanding of contents and to lessen the fatigue of the teachers’ voices.

Sound localization and word discrimination in reverberant environment in children with developmental dyslexia / Localización sonora y discriminación de palabras en ambientes reverberantes en niños con dislexia del desarrollo

Objective Compare if localization of sounds and words discrimination in reverberant environment is different between children with dyslexia and controls. Method We studied 30 children with dyslexia and 30 controls. Sound and word localization and discrimination was studied in five angles from left to right auditory fields (-90o, -45o, 0o, +45o, +90o), under reverberant and no-reverberant conditions; correct answers were compared. Results Spatial location of words in no-reverberant test was deficient in children with dyslexia at 0º and +90o. Spatial location for reverberant test was altered in children with dyslexia at all angles, except –-90o. Word discrimination in no-reverberant test in children with dyslexia had a poor performance at left angles. In reverberant test, children with dyslexia exhibited deficiencies at -45o, -90o, and +45o angles. Conclusion Children with dyslexia could had problems when have to locate sound, and discriminate words in extreme locations of the horizontal plane in classrooms with reverberation. .

Objetivo Comparar localización de sonidos y localización-discriminación de palabras bajo reverberación y sin reverberación en niños disléxicos y controles. Método Estudiamos 30 niños disléxicos y 30 controles, pareados por edad. La localización sonora y discriminación a palabras fue estudiada en cinco ángulos horizontales en los campos izquierdo y derecho (-90o, -45o, 0o, +45o, +90o), bajo reverberación y sin reverberación; las respuestas correctas fueron comparadas Resultados: La localización sonora sin reverberación fue deficiente en niños disléxicos a 0º y +90º. La localización bajo reverberación falló en niños disléxicos en todos los ángulos, excepto –-90o. Durante la discriminación a palabras, sin reverberación, los niños disléxicos fallaron en ángulos izquierdos. En la prueba reverberante, los niños disléxicos fallaron a -–45o, -90o y +45o. Conclusion Los niños con dislexia pueden tener problemas cuando tienen que localizar sonidos y discriminar palabras en las localizaciones extremas del plano horizontal en salones de clases típicos con reverberación. .

Negativo e contratransferência / Negativo y contratransferencia / Negative and countertransference

Embora André Green nunca tenha duvidado de ser a contratransferência uma via de abordagem essencial nas formas extremas de negatividade, ele não dedicou nenhum texto completo a este tema. A razão disto está provavelmente no fato de ele ter sido absorvido pela discussão das formas tênues atribuídas à noção de contratransferência na psicanálise de língua inglesa. As noções de dupla referência, de dupla significância e de dupla representância, bem como aquela de tempo fragmentado, nos fornecem, contudo, um conceito útil para continuar o estudo sobre o negativo e a contratransferência.

Although André Green never doubted that countertransference was an essential tool for approaching the extreme forms of negativity, he did not dedicate any full text to this topic. The reason for this lays probably in the fact that he was absorbed by the discussion about the subtle forms attributed to the notion of countertransference in English speaking psychoanalysis. The notions of double reference, double significance, and double representation, as well as on fragmented time provide us, nevertheless, with a useful concept to continue the study on the negative and countertransference.

Aunque André Green nunca haya dudado de que la contratransferencia sea una vía de abordaje esencial en las formas extremas de negatividad, no dedicó ningún texto completo a este tema. La razón para esto está probablemente en el hecho de haber sido absorbido por la discusión de las formas tenues atribuidas a la noción de contratransferencia en psicoanálisis de lengua inglesa. Las nociones de doble referencia, de doble significación y de doble representación, bien como aquella de tiempo fragmentado, nos ofrecen, sin embargo, un concepto útil para continuar el estudio sobre lo negativo y la contratransferencia.

Avaliação do ruído e seus efeitos em professores e alunos de academias de ginástica / Evaluation of noise and its effects on gym teachers and students

O ruído encontra-se cada vez mais relacionado à atividade de lazer no Brasil, inclusive em academias de ginástica, onde milhares de professores e alunos estão expostos a elevados níveis de pressão sonora durante várias horas por dia, sem qualquer tipo de proteção, sendo necessária a preocupação com a saúde mental e corporal desta população. Esta pesquisa teve como objetivo avaliar os níveis de ruído em academias de ginástica nas cidades de Curitiba-PR e Irati-PR, através das medições dos níveis de pressão sonora - nível sonoro equivalente (Leq), níveis mínimos (Lmin) e máximos (Lmax), simulações dos parâmetros acústicos (tempo de reverberação - TR e índice de transmissão da fala - STI) e identificação dos efeitos causados pelo ruído nos professores e alunos. Para a coleta de dados, foi utilizado um medidor sonoro classe I da marca Brüel & Kjær, modelo 2238, as simulações computacionais foram realizadas com o software Odeon Combined versão 9.2 e para a identificação dos efeitos, foram aplicados questionários nos alunos e professores. Na análise estatística foi utilizado o software R versão 2.11.1, considerado o nível de significância igual a 5% (p ? 0,05). Os resultados mostraram que os níveis de pressão sonora (Leq) variaram entre 80,1 e 100,1 dB(A), atingindo o valor máximo (Lmax) 117,2 dB(A), ultrapassando os valores limites estabelecidos pela legislação. Verificou-se que as modificações realizadas nas academias de ginástica reduziram o tempo de reverberação e alteraram a classificação do índice de transmissão da fala de pobre para satisfatório, melhorando assim as condições acústicas das academias de ginásticas. Os efeitos mais relatados pelos alunos e professores foram cansaço e fadiga vocal. Diversas alterações vocais foram apontadas pelos professores no final se sua jornada de trabalho, sendo que a mais relatada foi rouquidão. Conclui-se que o ambiente da academia de ginástica onde as pessoas buscam a promoção da saúde e lazer apresentou, incoerentemente, altos níveis de pressão sonora que são encontrados em ambientes industriais, gerando assim extrema preocupação com relação à saúde de seus alunos e, especialmente, dos professores atuantes. Diante dos resultados encontrados neste estudo, fica evidente a necessidade de ações que minimizem e controlem a ação prejudicial do ruído nas academias de ginástica, podendo ser realizadas através de medidas de controle da exposição do ruído na fonte, na trajetória e no indivíduo.

Noise is increasingly related to leisure activities in Brazil, including those carried out in fitness gyms where thousands of instructors and users are exposed to high sound pressure levels during several hours a day without any kind of protection, a situation in which it becomes necessary the concern about the mental and physical health of this population. The objective of this research was to evaluate the noise levels in fitness gyms in the cities of Curitiba and Irati in the State of Paraná through the measurements of sound pressure levels - equivalent continuous sound pressure level (Leq), minimum (Lmin) and maximum (Lmax) levels, simulations of the acoustic standards (reverberation time - RT and speech transmission index - STI) and the identification of effects caused by noise in instructors and users. A sound meter class I, model 2238 from the make Brüel e Kjær was used to collect the data and the software Odeon Combined version 9.2 was used for the computational simulations. In addition, a questionnaire was submitted to instructors and users aiming at identifying the effects of the high sound pressure levels on them. The software R version 2.11.1 was employed for the statistical analysis considering the significance level as 5% (p ? .05). The results showed that the sound pressure levels (Leq) varied between 80.1 and 100.1 dB(A), reaching the maximum value (Lmax) at 117.2 dB(A), surpassing the limits established by law. It was verified that the modifications made in the fitness gyms reduced the reverberation time and changed the speech transmission index classification from poor to fair improving the acoustic conditions of the gyms. The most reported effects by users and instructors were tiredness, and vocal fatigue. Several vocal alterations were pointed out by instructors in the end of their workday, being hoarseness the most reported one. The conclusion is that the fitness gym environment, despite being a place where people seek health improvement and leisure time, shows high sound pressure levels similar to the ones found in industrial environments, which creates an extreme concern in relation to the health of its users, and especially its instructors. In face of the results found in this research it seems unmistakable the need of efforts which minimize and control the hazardous action of noise in fitness gyms, which can be done through control measures of the noise exposure in the source, in the trajectory and in the individual.