Speech discrimination derived from guinea pig CM initiated by ossicular chain coupled piezoelectric drivers, by hearing airs, and by conventional acoustic presentation
R. O. Cook, William G. Thomas, Teruzo Konishi, Charles W. Hamm, A. H. Yankwich · The Journal of the Acoustical Society of America · 1975
It is axiomatic that response to complex waveforms can be predicted for linear systems from pure-tone frequency-response tests in amplitude and phase. However, in speech/hearing aid considerations, direct tests of the characteristic of interest has proved most expedient. That characteristic is, of course, the ability to transduce speech itself. Phonetically balanced word lists were presented to anesthetized guinea pigs and the resulting CM recorded from basal turn differential electrodes. Word lists recorded in this manner were presented to listeners with normal hearing. Quantitative comparisons of the discriminability of such lists, presented both in the quiet and in the presence of background noise sufficient to degrade recognition cues were shown.