نتایج جستجو برای: acoustic

تعداد نتایج: 85922  

Journal: :The Journal of the Acoustical Society of America 1981

Journal: :Journal of Physics: Conference Series 2008

Journal: :Proceedings of the Royal Society of Medicine 1965

Journal: :Časopis pro pěstování matematiky a fysiky 1947

Journal: :Journal of Applied Physics 2021

Abstract

ژورنال: سلامت کار ایران 2021

Introduction: Nowadays, the acoustic behavior analysis of natural fibers composites has received increasing attention by researchers. In this regard, the present study aimed to optimize and model the sound absorption behavior of composites made of Yucca Gloriosa (YG) fiber via using a mathematical modeling approach. Methodology: In this experimental cross-sectional study, in order to fabricate...

2007
Paul Dickens

The acoustic behaviour of wind instruments is largely determined by their acoustic impedance spectrum measured at the embouchure or 'input' to the instrument. The acoustic impedance Z is the ratio of acoustic pressure p U and its extrema identify the frequencies of resonances and antiresonances due to standing waves in the bore. (For example see [1].) Backus [2] reports measurements of the acou...

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