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Equation of Motion of a Simple System
39 other sections not shown
absorbing power absorption coefficient acoustic added mass amplitude applied Architectural Acoustics axis Bessel's boundary component consider constant damping deal degrees of freedom determined diaphragm discussion displacement dissipation driving force driving point effect electrical enclosure energy density equal equation of motion equivalent excess pressure factor filter fluid formula function given impedance inertia interest Jour layer low frequencies maximum mechanical medium membrane method natural frequency natural oscillations normal obtained orifice P. E. Sabine paper particle velocity phase velocity phenomena Phys piezo-electric piston plane waves problem Proc quantity quency radiation resistance radius ratio Rayleigh reactance reader reflection reflection coefficient relation resonator result reverberation solution sound waves spherical standing wave standing wave system steady state theory stiffness string surface theory thickness tion trans transmission tube unit area velocity potential vibrating system viscosity wall wave length zero