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• W2555961502 abstract "Professional musicians are oftentimes exposed to high levels of sound. Prolonged or severe exposure to high sound levels could lead to permanent hearing loss and compromise their career. The logical solution would be to wear hearing protection devices (HPDs) when appropriate. However, perceptual discomfort associated with wearing HPD can discourage their use by musicians. The perceptual discomfort is caused by two detrimental effects: the occlusion effect and the isolation effect. The occlusion effect is often reported as an augmented, unnatural and annoying perception of one’s own voice or instrument mechanically coupled to the head when wearing HPDs. The isolation effect is the unnatural sensation of being isolated from a given sound environment and can be caused by wearing HPDs that do not compensate for psychoacoustical factors and therefore alter the wearer’s auditory perception. Both effects are highly unfavorable to the musicians’ auditory perception and compromise their capacity to perform to the best of their abilities for their audience. They are among the reasons most often reported by musicians to decide not to wear HPDs.This master’s project presents the concept and first prototype of an active HPD for musicians that aims at solving the detrimental effects while protecting the musician’s hearing. A solution for the occlusion effect is presented in the form of an earplug complemented with in-ear active noise control. Practical design issues and required trade-off are analyzed through a literature review and the implementation and characterization of an active occlusion effect reduction system, allowing reduction of the occlusion effect between 8.5 and 12 dB at 250 Hz. A solution for the isolation effect is presented in the form of an earplug complemented with digital signal processing capabilities. Factors that may cause the isolation effect are identified through a literature review and corresponding algorithms that aim at re-establishing the naturalness of the auditory perception while wearing HPDs are presented through the design and implementation of an isolation effect compensation system, allowing up to 15 dB of variable uniform attenuation when used by itself. Both systems working simultaneously in the same device would result in an active HPD for musicians that reduces the occlusion effect and offers uniform variable attenuation up to 25 dB and perceived uniform attenuation up to 25 phons. The aim of this active HPD for musicians is to cause the least perceptual discomfort while protecting a musician’s most precious tool: his hearing." @default.
• W2555961502 created "2016-11-30" @default.
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• W2555961502 date "2013-10-23" @default.
• W2555961502 modified "2023-09-27" @default.
• W2555961502 title "Towards an active hearing protection device for musicians" @default.
• W2555961502 hasPublicationYear "2013" @default.
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