Cavity-Wall Influence in Cavity Resonance
Jack C. Cotton · The Journal of the Acoustical Society of America · 1934
Since the walls of the resonant cavities concerned in voice production are non-rigid in character, a study of vocal resonance might well begin with an experimental investigation of various soft walled cavities. The apparatus being used in this study was described at the Ann Arbor meeting of the Society, November 29, 1932. Results of this investigation reveal a number of important differences in behavior from that predicted by the theory based on “perfectly rigid walls.” Among these differences are: a higher fundamental resonant frequency; a radical decrease in the amplification of the driving tone at a resonant frequency; a reduction or loss of resonant response at harmonics of the resonator's natural frequency.