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ResonanceSharpness of Resonance Amplitude Relations
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A. H. Davis absorbing power absorption Acous acoustical impedance alternating current amplifier amplitude analyser anode applied attenuation audible audio-frequency audiometer average calculated calibrated characteristic characteristic impedance circuit coefficient coil complex components condenser microphone constant curve cycles per second damping decibels diameter diaphragm disc displacement distance effect electrical electrical impedance employed energy equal equation filter fluctuations force formula given gramophone grid harmonic horn incident inductance instrument intensity loud-speaker loudness magnetic measurements medium method motion National Physical Laboratory natural frequency noise obtained oscillator oscillograph output phase Phys pipe piston pitch plate pressure Proc quencies radiation range ratio Rayleigh reactance record reflected resistance resonance reverberation ripple tank sound waves source of sound speech surface telephone receiver theory tion tone transmission tube tuned valve variations varied velocity of sound vibration voltage walls wave-form wave-length wire