Headphones
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Criação de uma ferramenta hipermídia para a promoção da saúde auditiva em jovens usuários de dispositivos sonoros portáteis individuais / Creation of a hypermedia tool for promoting hearing health in young users of individual portable sound devices
Since the advent of amplified music in the music and entertainment industries and the increased popularity of portable individual sound devices among young people, hearing loss induced by high levels of sound pressure among children and adolescents is a serious and growing concern. Promoting hearing heath for this population is necessary to disseminate infor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2012
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2. Virtual acoustic prototyping applied to hammer noise of automotive tires / Prototipagem virtual sonora aplicada a ruido de martelamento de pneumaticos automotivos
This study explored the automotive tire noise generation mechanism known as hammer noise, according to the Virtual Acoustic Prototyping approach. A theoretical model available in the literature that considers only the plurality of block pitches in the tread band was implemented. Based on this model, two improved models were developed and implemented consider
Publicado em: 2009
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3. Teleaudiometria: um método de baixo custo para triagem auditiva / Teleaudiometry: a low-cost method of auditory screening
Introduction: Hearing deficiency interferes with the perception and recognition of speech. The benefits of auditory screening in newborns and schoolchildren have been well demonstrated. However, in developing countries, the availability of auditory screening programs has been restricted to larger facilities, due to the scarcity of equipment and specialized p
Publicado em: 2009
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4. Avaliação da exposição ocupacional ao ruído em atividades que utilizam fones de ouvido (headsets e headphones). / Evaluation of noise occupational exposure in activities that involve communication through headsets and headphones.
Com o avanço técnico-científico e a necessidade de rapidez nas comunicações dos diversos segmentos da economia e da vida moderna, a utilização de fones de ouvido não se restringe mais somente aos serviços de Telefonia (telefonistas, atendentes, técnicos e cabistas), operadores de telemarketing ou teleatendimento, mas também a outras profissões co
Publicado em: 2008
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5. Studies about personalization of the head-related transfer function in binaural virtual auditory displays. / Estudos sobre personalização da função de transferência relativa à cabeça em sistemas biaurais de reprodução acústica virtual.
This work presents several proposals associated with the optimal use of head-related transfer functions (HRTF) in virtual auditory spaces presented via headphones. These proposals lead to personalization of the HRTF to particular individuals, using a combination of the structural and morphological modeling techniques. In the context of structural modeling, t
Publicado em: 2006
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6. Auralização : tecnicas de modelagem e simulação binaural de ambientes acusticos virtuais
Auralization is a term used to signify the techniques that render audible a sound field through the mathematical or physical modeling of the sound source, the acoustic space and the listener. The present work aims to analyse fully computed process of modeling to the constitution of virtual acoustics environments that can be implemented and interactively simu
Publicado em: 2005
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7. Integration of auditory and vibrotactile stimuli: Effects of phase and stimulus-onset asynchrony
The perceptual integration of 250 Hz, 500 ms vibrotactile and auditory tones was studied in detection experiments as a function of (1) relative phase and (2) temporal asynchrony of the tone pulses. Vibrotactile stimuli were delivered through a single-channel vibrator to the left middle fingertip and auditory stimuli were presented diotically through headphon
Acoustical Society of America.
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8. Different patterns of human discrimination learning for two interaural cues to sound-source location
Two of the primary cues used to localize the sources of sounds are interaural level differences (ILDs) and interaural time differences (ITDs). We conducted two experiments to explore how practice affects the human discrimination of values of ILDs and ongoing ITDs presented over headphones. We measured discrimination thresholds of 13 to 32 naive listeners in
The National Academy of Sciences.
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9. Myogenic potentials generated by a click-evoked vestibulocollic reflex.
Electromyograms (EMGs) were recorded from surface electrodes over the sternomastoid muscles and averaged in response to brief (0.1 ms) clicks played through headphones. In normal subjects, clicks 85 to 100 dB above our reference (45 dB SPL: close to perceptual threshold for normal subjects for such clicks) evoked reproducible changes in the averaged EMG begi