Cochlear Mechanics: Introduction to a Time Domain Analysis by Hendrikus Duifhuis
By Hendrikus Duifhuis
The box of cochlear mechanics has got an expanding curiosity during the last few many years. within the majority of those reviews the researchers use linear platforms research or linear approximations of the nonlinear (NL) structures. although it has been transparent that the intact cochlea operates nonlinearly, loss of instruments for correct nonlinear research, and generally on hand instruments for linear research nonetheless result in inefficient and doubtless fallacious interpretation of the biophysics of the cochlea. An instance is the presumption switch in cochlear stiffness at hair telephone point needs to account for the saw swap in tuning (or frequency mapping) as a result of prestin software. Hypotheses like this have to be addressed in an academic that's lucid sufficient to investigate and clarify easy changes.
Cochlear Mechanics provides an invaluable and mathematically justified/justifiable procedure primarily a part of the textual content, an method that would be elucidated with transparent examples. The publication could be priceless to scientists in auditory neuroscience, in addition to graduate scholars in biophysics/biomedical engineering.
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Additional info for Cochlear Mechanics: Introduction to a Time Domain Analysis of the Nonlinear Cochlea
Signal generators as well as meters and analyzers were developed to more demanding specifications, aiming at better controllable and reproducible experiments. For instance, a high quality oscillator which tended to be somewhat sensitive to temperature variation—and therefore providing a slightly shifting frequency during warm-up—produced very little distortion or background noise. In contrast, the first digital signal generator produced extremely stable frequencies, but it took decades of additional developments to achieve the same precision in amplitude and signal purity as had been available in the analogue equipment.
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Firstly, this concerns studies of temporal and spectral sensitivity and selectivity, such as the relation between critical bands and effective bandwidths of tuning curves, between auditory masking patterns and cochlear excitation patterns, and the time–frequency uncertainty relation f t 1 in relation to sharpness of tuning (Q3dB ) and time resolution. Although the tools and theories largely originate from linear systems analysis, it had been clear from the beginning of masking studies that the data showed unmistakable nonlinear effects.