Sound transmission
Validity and Reliability of a Measuring Device Based on Sound Transmission for Diagnosis of Hip Dysplasia in Newborns
... compared sound transmission test and the compared sound transmission with extension/flexion test were applied using the device two times by the same researcher and one third time by a ...
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Determination Of Sound Transmission Class (STC) For Lecture Rooms In UTeM
... airborne sound blocked from transmitting through a partition is measured in a Sound Transmission Class (STC) ...allow sound transmission through walls and increase the background noise ...
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Finite Element Analysis of Sound Transmission Loss in One Dimensional Solids
... the sound transmission loss through a solid, an acoustic system having three components (air, solid and air), as depicted in Figure 1, is ...the sound transmission loss as the sound ...
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To Analyze Of Weather Seal Sound Transmission Loss By Acoustic Simulation Software
... Whereas an automobile is roaming at a speed over 120kph, the airstream noise will show the main role for the internal noise (A. Kloess, 2004). Dimensions designate that the wind noise level at the person along for the ...
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Diagnosis of Developmental Dysplasia of the Hip Using Sound Transmission in Neonates
... with sound transmission test and 74.4% for testing sound transmission with extension/flexion [2]; as results on the sensitiv- ity of the compared sound transmission test, ...the ...
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In situ measurement methods for characterisation and diagnosis of airborne sound transmission through multi layered building partitions
... of sound is transmitted by the centre region of the ...the sound transfer is usually ...the sound transfer through the corners and sides become more significant due to reasons discussed in Section ...
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Directional sound processing and interaural sound transmission in a small and a large grasshopper
... Locusts and grasshoppers have an ear on each side of the first abdominal segment. It consists of a sclerotized ring forming a recess in the abdomen and encircling a tympanal membrane, to which 60–80 receptor cells are ...
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Active control of sound transmission through panels with flexible boundaries under deterministic and stochastic excitation
... water transmission case the sound transmission coefficient tends to 0 dB at higher fre- quencies, indicating that the panel is not an effective sound barrier under ...the sound ...
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Structure-borne sound transmission between isotropic, homogeneous plates and periodic ribbed plates
... wave transmission across the junction were ...wave transmission in the model as the generation of in-plane wave was ignored due to the assumption of a simply-supported ...wave transmission for a ...
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Study On The Effect Of Holes Arrangement Of Absorptive Silencer On The Sound Transmission Loss Performance
... erroneous sound in the improper place at the improper ...futile sound into the surrounding without regarding the detrimental effects it may have (Mishra et ...ambient sound waves is due to the surges ...
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Modelling of low frequency muffler based on acoustic black hole effect
... The influence of acoustic metamaterial linings as an attenuation technique for designing the low frequency mufflers has been studied in this research project. A review of the available technologies and a theoretical ...
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Numerically solving the sound transmission in the intake of a turbofan engine with non axisymmetric lining
... The results for the 1D eigenproblem and the 2D transmission problem for axisymmetric lined ducts have been validated against exact results or results obtained from literature. The results from the iterative method ...
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Predictions and measurements of sound transmission through a periodic array of elastic shells in air
... The sound source was a Bruel & Kjaer point source loudspeaker controlled by a maximum-length sequence sys- tem analyzer (MLSSA) system thus enabling determination of impulse ...
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The lung eardrum pathway in three treefrog and four dendrobatid frog species: some properties of sound transmission
... This sound transmission from the lung is one component of the pressure gradient established between the outer and inner surfaces of the ...the sound (Michelsen et ...of sound, which is ...
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The influence of headphones on the localization of external loudspeaker sources
... The use of binaural rendering is popular in a number of audio applications—from hearing research [1–3] to enter- tainment [4, 5]. In each application, the specific require- ments for the performance of a binaural system ...
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Study the Sound Insulation of Elastically Restrained Panel
... the sound transmission between two rooms through an elastic ...FEM. Transmission loss of a panel is calculated for different mounting conditions, indicating that the mounting condition has a ...
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Structure-borne sound transmission on frameworks of beams
... for transmission to beams 2 and 3 (both of which are directly connected to beam ...for transmission to beam 4 (which is not physically connected to the source beam) the results in Figure ...For ...
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Smart double panel with decentralised active dampers for control of sound transmission
... the sound power transmission ratio of such a double panel decreases steeply above the mass-air-mass resonant frequency where the sound transmission is governed by mass law ...the ...
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Sexual signalling in bladder grasshoppers: tactical design for maximizing calling range
... the maximum broadcast areas of male and female calls. Estimation of the maximum transmission distances for male and female calls (Fig. 5) assumes the absence of masking noise in the field that might otherwise ...
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Sound Swarm : experience sound from the inside
... Sound sources containing higher frequencies could be placed physically higher as well. This way, the illusion of tones occupying their correlated height in a spatial location can be used to strengthen the ...
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