Results 211 to 220 of about 43,909 (261)
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The measurement of sound transmission loss of panels with small transmission loss
Journal of Sound and Vibration, 1965Abstract The transmission room method for the measurement of transmission loss is reviewed and the lower limits of validity established. An alternative method for measuring low loss panels is described.
K.A. Mulholland, H.D. Parbrook
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The incudo-malleolar joint and sound transmission losses
Hearing Research, 2002The question as to whether the incudo-malleolar joint (IMJ) is mobile or immobile at moderate sound pressure levels (SPLs) is addressed. Referring to the mechanical properties of elastic tissue, we suggest that the IMJ is mobile at any SPL. In order to test this hypothesis, we investigated the dynamics of the IMJ in nine temporal bones by means of ...
Willi, Urban B +2 more
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Effect of Humidity on Sound-Transmission Loss
The Journal of the Acoustical Society of America, 1965A test program was recently instituted by the United States Gypsum Company—Research Center, with the cooperation of the Riverbank Acoustical Laboratories, to determine the effect of ambient humidity on the sound-transmission loss of a double-leaf gypsum-board partition system. The results of this test series were quite explicit.
Allen H. Shiner, Maurice J. Marchello
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Sound Transmission Loss of Panels
2015In general, the noise level inside a building or structure is determined by the transmission of air-borne sound from external and internal acoustic sources and by structure-borne sound induced by some mechanical sources.
Anders Nilsson, Bilong Liu
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Measurement of Sound-Transmission Loss in the Field
The Journal of the Acoustical Society of America, 1962Field transmission-loss measurements are an important part of architectural-acoustics work. The technical problems of making field measurements differ in many respects from the problems of laboratory measurements. These problems and some solutions are discussed.
W. R. Farrell, B. G. Watters
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2019
The transmission of sound through walls and barriers is an extremely important topic for noise control engineers. In this chapter we examine the basic principles of how sound passes through walls. The primary physical characteristics that influence sound transmission through walls are studied, including the importance of mass and how the bending ...
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The transmission of sound through walls and barriers is an extremely important topic for noise control engineers. In this chapter we examine the basic principles of how sound passes through walls. The primary physical characteristics that influence sound transmission through walls are studied, including the importance of mass and how the bending ...
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Boundary element analyses for sound transmission loss of panels
The Journal of the Acoustical Society of America, 2010The sound transmission characteristics of an aluminum panel and two composite sandwich panels were investigated by using two boundary element analyses. The effect of air loading on the structural behavior of the panels is included in one boundary element analysis, by using a light-fluid approximation for the eigenmode series to evaluate the structural ...
Ran, Zhou, Malcolm J, Crocker
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An indirect hybrid sound transmission loss controller
Applied Acoustics, 2012Abstract The control of sound transmission through panels is an important noise control problem in the aerospace, aeronautical, and automotive industries. The trend towards using lightweight composite materials that have lower sound insulation performance is a negative factor regarding low frequency transmission loss. Double-panel partitions with the
Diego Azevedo Siviero +1 more
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INTER-NOISE and NOISE-CON Congress and Conference Proceedings
The performance of building sound insulation is an important parameter for evaluating the quality of construction projects. So far, the sound insulation performance testing of building walls requires the installation of large-dimensioned wall samples in specialized sound insulation laboratories, which is time-consuming and costly. If small-dimensioned
Ziyang WANG +4 more
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The performance of building sound insulation is an important parameter for evaluating the quality of construction projects. So far, the sound insulation performance testing of building walls requires the installation of large-dimensioned wall samples in specialized sound insulation laboratories, which is time-consuming and costly. If small-dimensioned
Ziyang WANG +4 more
openaire +1 more source