Inter-noise: Proceedings

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