Sound Pressure Level Gain in an Acoustic Metamaterial Cavity
نویسندگان
چکیده
منابع مشابه
Sound Pressure Level Gain in an Acoustic Metamaterial Cavity
The inherent attenuation of a homogeneous viscous medium limits radiation propagation, thereby restricting the use of many high-frequency acoustic devices to only short-range applications. Here, we design and experimentally demonstrate an acoustic metamaterial localization cavity which is used for sound pressure level (SPL) gain using double coiled up space like structures thereby increasing th...
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We design and experimentally demonstrate an acoustic metamaterial localization cavity which is used for sound pressure level (SPL) gain using double coiled up space like structures. This unique behavior occurs within a subwavelength cavity that is 1/10 th of the wavelength of the incident acoustic wave, which provides up to a 13 dB SPL gain. We show that the amplification results from the Fabry...
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AIM To evaluate the sound pressure level to which preschool students are exposed. METHOD This was a prospective, quantitative, nonexperimental, and descriptive study. To achieve the aim of the study we used an audio dosimeter. The sound pressure level (SPL) measurements were obtained for 2 age based classrooms. Preschool I and II. The measurements were obtained over 4 days in 8-hour session...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2014
ISSN: 2045-2322
DOI: 10.1038/srep07421