11 Internationaler Kongress für AkustikGroupement des acousticiens de langue française, 1983 - Architectural acoustics |
Contents
Exact resonance formulation of acoustic transmission | 103 |
On sound propagation in moving stratified medium | 109 |
Caustics catastrophes and wave fields | 115 |
4 other sections not shown
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Common terms and phrases
absorption acoustic field ACOUSTIC SCALE acoustique amplitude anemometer approximation barrier boundary bruit calculated champ coefficient correlation curves cylinder d'onde d'une deux diffraction dioptre direction distance duct effect equation été excess attenuation experimental Figure finite flow fluctuations fluid frequency function ground impedance infinite element infrasonic insertion loss integral Kirchhoff l'équation l'onde layer linéaire linear Lyon-Toulouse Mach number mbar measured medium method méthode microphone mode modèle NEAR-FIELD DIFFRACTION PATTERNS noise nonlinear normal obtained obtenus octave band ondes outdoor sound propagation parameters peak perturbation peut phase plane wave potential pression problem radiation reflection reflection coefficient représentation resonance résultats rigid sawtooth wave scattering Schallwellen shear shock shock wave shows sidelobes signal solution sonore sound field sound level sound pressure level sound source sound wave spherical surface wave theory tion valeur values variation velocity velocity potential vitesse waveform