Inter-noise: Proceedings

A-weighted absorption ACOUSTIC INTENSITY aircraft noise airport amplitude analysis attenuation barrier calculated coefficient components Control Engineering correlation damping dB(A December 3-5 developed diffraction distance duct effect enclosure energy equation estimated evaluation excitation experimental Figure flow Frequency Hz frequency range impact impedance insertion loss inter-noise Honolulu located loss factor low frequency measured mechanical method microphone modes noise barrier Noise Control Engineering noise exposure noise level noise reduction noise source obtained octave band operation panel parameters phase plate prediction problem propagation radiation resonance reverberation shown in Fig signal silencer sound absorbing sound field sound intensity sound level sound level meter sound power level sound pressure level sound transmission spectra spectrum speed structure surface techniques tion transfer function transmission loss truck tube USA 1984 December values valve vehicle velocity vibration wall wave WECPNL