Motorcycle Helmet Noise and Active Noise Reduction

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Motorcycle Helmet Noise and Active Noise Reduction

The incidence of collisions between motorcyclists and other vehicles may be significantly reduced by research that improves the acoustic awareness of cyclists, and thus heightens the ability of cyclists to respond to unexpected incursions from the surrounding traffic. We use our hearing as an early warning system, and hearing swiftly redirects our vision and attention. This shift in gaze is cri...

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Aeroacoustic sources of motorcycle helmet noise.

The prevalence of noise in the riding of motorcycles has been a source of concern to both riders and researchers in recent times. Detailed flow field information will allow insight into the flow mechanisms responsible for the production of sound within motorcycle helmets. Flow field surveys of this nature are not found in the available literature which has tended to focus on sound pressure leve...

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On-road and wind-tunnel measurement of motorcycle helmet noise.

The noise source mechanisms involved in motorcycling include various aerodynamic sources and engine noise. The problem of noise source identification requires extensive data acquisition of a type and level that have not previously been applied. Data acquisition on track and on road are problematic due to rider safety constraints and the portability of appropriate instrumentation. One way to add...

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Combined Active Noise Control and Noise Reduction in Hearing Aids

This paper presents a combined active noise control and noise reduction scheme for hearing aids to tackle secondary path effects and effects of signal leakage through the fitting. While such leakage contributions and the secondary accoustic path from the reciever to the tympanic membrane are usually not taken into account in standard noise reduction systems, they appear to have a non-negligible...

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Personal Hearing Protection including Active Noise Reduction

(Les dispositifs de protection de l'ouie, y compris l'atténuation du bruit actif) The material in this publication was assembled to support a Lecture Series under the sponsorship of the Human Factors and Medicine Panel (HFM)

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ژورنال

عنوان ژورنال: The Open Acoustics Journal

سال: 2011

ISSN: 1874-8376

DOI: 10.2174/1874837601104010014