Inter-noise: ProceedingsAustralian Acoustical Society, 1988 - Noise control |
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Page 88
Proceedings. Z - PROBE ~ TT . COHERENCE 7 - PROBE INTER - MIC . CONERENCE Z ~ TT COHERENCE z - z PP 90 inter - noise 88 A METHOD TO DETECT SEPARATELY SOUND. Auto - spectrum dB 15042 Z - PROBE MIC Coherence 0.75 0.5 TURBULENCE TUBE MIC ...
Proceedings. Z - PROBE ~ TT . COHERENCE 7 - PROBE INTER - MIC . CONERENCE Z ~ TT COHERENCE z - z PP 90 inter - noise 88 A METHOD TO DETECT SEPARATELY SOUND. Auto - spectrum dB 15042 Z - PROBE MIC Coherence 0.75 0.5 TURBULENCE TUBE MIC ...
Page 95
... coherence between pressure and particle velocity . The coherence between the pressure signals measured at two closely spaced positions is also affected by the characteristics of the sound field [ 3 ] . However , in the frequency range ...
... coherence between pressure and particle velocity . The coherence between the pressure signals measured at two closely spaced positions is also affected by the characteristics of the sound field [ 3 ] . However , in the frequency range ...
Page 200
... coherence techniques , an appropriate scaling of the considered signals is of importance . Virtual Coherence The degree of causal relationship between the principal or virtual inputs and the physically measured signals can be expressed ...
... coherence techniques , an appropriate scaling of the considered signals is of importance . Virtual Coherence The degree of causal relationship between the principal or virtual inputs and the physically measured signals can be expressed ...
Contents
DISTINGUISHED LECTURES | 1 |
Speed related noise in land transport | 21 |
ANALYSIS 70 | 31 |
Copyright | |
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A-weighted accelerometer acoustic intensity active intensity amplitude analysis applied axial blade calculated centrifugal fans coefficient coherence components compressor coupling cylinder damping dB(A density determined duct dynamic effect energy Engineering equation estimated excitation experimental filter finite element method fluid force Frequency Hz frequency range function gear holography impact impedance input intensity measurements inter-noise 88 machine matrix mechanical method microphone modal mode motor nearfield noise control noise level noise reduction noise sources obtained octave octave band output panel parameters particle phase plane power flow predicted problem propagation pump radiation efficiency reception plate resonance reverberation rotating shell shown in Figure shows signal sound field sound intensity sound level sound level meter sound power level sound pressure level sound source spectra spectrum speed Statistical Energy Analysis structure structure-borne surface technique transducers turbulent values vector velocity vibration wave wavenumber