Structure-borne sound power
Using transient and steady-state SEA to assess potential errors in the measurement of structure-borne sound power input from machinery on coupled reception plates
... the structure-borne sound power input from machinery through the measurement of the spatial-average velocity level and structural reverberation ...building structure to which the ...
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Uncertainties in predicting structure-borne sound power input into buildings
... of structure-borne noise in buildings, particularly over the last two ...simplicity. Structure-borne sound transmission is a more complicated process than airborne sound ...
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Vibroacoustics of timber-frame structures excited by structure-borne sound sources
... by structure-borne sound sources Fabian Sch¨opfer This thesis investigates the measurement and prediction of machinery noise in timber-frame ...the structure-borne sound ...
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Structure-borne sound transmission on frameworks of beams
... Figure 7.2 (a) allows comparison of E B1 /E B2 for the B and BL models. Between 10 Hz and 500 Hz the bending mode count is sufficiently low (approximately one mode per band) that there are large fluctuations in the FEM ...
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Experimental round robin evaluation of structure borne sound source force power test methods
... the structure-borne noise from operational equipment in airplanes is a complex process that requires much source and receiver component information in the ...transmitted power from the integrated ...
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Indirect methods of obtaining activity and mobility of structure-borne sound sources
... Schevenels [125, 126] examined structural-acoustical methods together with reciprocity measurements to determine the contact forces and transmitted power between a tonal, low-frequency vibrating platform and a ...
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Identification and quantification of transient structure borne sound sources in electrical steering systems
... providing power assistance to move the steering rack according to the instantaneous driving ...electric power assisted steering is summarised by the block diagram in Figure ...
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General model of a structure-borne sound source and its application to shock vibration
... physical sound sources inside the ...vibration power flow into the receiving structure, and for computing the vibration field in the receiving structure using the interface values and ...
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Structure-borne sound transmission between isotropic, homogeneous plates and periodic ribbed plates
... available power W a, i , in order to determine the exact wave propagation path, there are two factors to take into ...The power injection position along the coupling junction does not only affect the wave ...
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Introduction Spatial Averaging Sound Pressure and Sound Power What about Background Noise? What is Sound Intensity?...
... Paths Sound can enter buildings in many ways, not only through the walls. Sound may also be transmitted through structure- borne paths and air-conditioning ...a sound source in an ...
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Modern Approaches For Modeling Of Structure-Borne Noise Of The Internal Combustion Engine
... total sound power levels of the main engine structure- borne noise ...of structure-borne noise from the working process and piston shifts for stationary mode is ...total ...
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Engineering Method of Sound Power Determination for Marine Engines
... emitted sound power level is required. The sound power level is treated as the index to make a judgement of the noisiness of a machine, ...the sound source without affecting the ...
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Airborne noise, structure borne sound (vibration) and vacuum stability of milking systems
... A 2 × 3 herringbone milking parlour with six milk- ing units was used to demonstrate the effect on noise, vibration and vacuum stability achieved by adapting the installation and a new[r] ...
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Phonology: Sound Structure
... While there is great variation in the segments that occur in particular languages—Maddieson and Precoda (1990) identify roughly 900—strong predictions can nevertheless be made about which sounds will occur. Some sounds ...
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Feld - Sound Structure as Social Structure
... By providing an overview of these areas I hope to illuminate some dimensions of a sociology of sound for the Kaluli of Papua New Guinea, a traditionally nonstratified society where ega[r] ...
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Sound Power Measurement
... lowest sound pressure levels measured in any frequency band of interest is numerically less than half of the number of mea- surement ...of sound pressure ...
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Sound Pressure Level and Power
... D4 - Room analysis The modes1.xls spreadsheet that was discussed under C above can be used to analyze the three hypothetical rooms and to gain some general insights. Depending upon their structural rigidity, their wall ...
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Probabilistic Structure from Sound and Probabilistic Sound Source Localization
... probabilistic structure from sound (PSFS) algorithm using the unscented transform ...and sound sources are computed using the SFS ...and sound sources can be represented by these weighted SFS ...
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Leak Detection Using Structure borne Noise
... Using Structure-borne Noise Abstract A method for detection and location of air leaks in a pressure vessel, such as a spacecraft, includes sensing structure-borne ultrasound waveforms ...
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Experimental analysis on structure-borne noise in an enclosure
... a structure-borne noise in a rectangular enclosure prototype made by joining of sheet aluminum metal and ...the structure-borne noise, the noise problem could be ...and sound in the ...
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