Inter-noise: ProceedingsAustralian Acoustical Society, 1988 - Noise control |
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Page 43
... AMPLITUDE LIMITATION Hideo MINAMI HARA * , Mitsuo OHTA ** , Masafumi NISHIMURA * and Yoshiaki TAKAKUWA * Faculty of ... amplitude limitations of the upper and / or lower levels of the dynamic range caused by an unsuitable selection ...
... AMPLITUDE LIMITATION Hideo MINAMI HARA * , Mitsuo OHTA ** , Masafumi NISHIMURA * and Yoshiaki TAKAKUWA * Faculty of ... amplitude limitations of the upper and / or lower levels of the dynamic range caused by an unsuitable selection ...
Page 529
... Amplitude reduction factor versus normalized cross section area of the obstacle in the case with obstacles whereas U ( ) is this amplitude in the undisturbed wave - field . The isolating effect of the ob- stacles is expressed by the ...
... Amplitude reduction factor versus normalized cross section area of the obstacle in the case with obstacles whereas U ( ) is this amplitude in the undisturbed wave - field . The isolating effect of the ob- stacles is expressed by the ...
Page 676
... amplitudes of the incident progressive wave , reflec- tive wave and the acoustic intensity in a stationnary wave tube . Amplitude of the incident progressive wave : Iprog Amplitude of the reflective wave Iref = | R | 2.Po2 / pc Popc - ...
... amplitudes of the incident progressive wave , reflec- tive wave and the acoustic intensity in a stationnary wave tube . Amplitude of the incident progressive wave : Iprog Amplitude of the reflective wave Iref = | R | 2.Po2 / pc Popc - ...
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