Results 1 to 10 of about 27,811 (329)
Minimum Phase Responses for the Basilar Membrane [PDF]
The Journal of the Acoustical Society of America, 1961 Appreciable experimental data exist for the amplitude of basilar membrane displacement as a function of sound frequency. Data on the phase of displacement vs frequency are relatively meager. At low frequencies the latter do not relate well to the phase predicted by recent mathematical models for membrane displacement.
James L. Flanagan, Carol M. Bird
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A Nonlinear Model for Basilar Membrane Motion [PDF]
The Journal of the Acoustical Society of America, 1973 A phenomenological model for basilar membrane motion is presented. The model consists of 10 cascaded elements defined by the nonlinear differential equations ẍi(t) + 2Di[1 + ηẋi2(t)]ẋi(t) + ω0i2xi(t) = Cxi−1(t) for i = 1, 2, ⋯, 10, where x0(t) is the input (stapes displacement) and x10(t) is the output (displacement of a point on the basilar membrane).
Russell R. Pfeiffer +2 more
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Basilar membrane nonlinearity and the growth of forward masking.
The Journal of the Acoustical Society of America, 1996Psychophysical forward masking generally grows nonlinearly, with a given increase in signal level requiring a larger increase in masker level for the signal to remain at threshold. In the present experiments, a 10-ms sinusoidal signal was presented 2 ms after a 20-ms sinusoidal masker at the same frequency. Frequencies of 2 and 6 kHz were tested.
Plack, Christopher J. +1 more
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Homodyne interferometer for basilar membrane measurements
Hearing Research, 1986Techniques available for measuring the mechanical response of the inner ear are compared. These include capacitive probe, Mössbauer and interferometric methods. The theory of a homodyne interferometer utilized for inner ear measurements is given. Experimental apparatus built to test the interferometer performance is described. Experimental results show
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Linear and nonlinear models of the basilar membrane motion
Biological Cybernetics, 1977A linear and a nonlinear transmission line model of the basilar membrane is described. The motion of the basilar membrane model has been simulated by numerical methods and compared with physiological data for several types of sound stimuli. It is shown that a linear model exhibits a frequency modulation in its impulse response that is in accordance ...
Aage R. Møller, Hans G. Nilsson
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Basilar-membrane nonlinearity estimated by pulsation threshold
The Journal of the Acoustical Society of America, 2000The pulsation threshold technique was used to estimate the basilar-membrane (BM) response to a tone at characteristic frequency (CF). A pure-tone signal was alternated with a pure-tone masker. The frequency of the masker was 0.6 times that of the signal.
Plack, Christopher J. +1 more
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Digital filter simulation of the basilar membrane
Computer Speech & Language, 1989Abstract This paper describes a digital filter simulation of basilar membrane vibration, in which the cochlea is represented as a cascade of 128 filters. The parameters of each filter are determined from the mechanical characteristics of the basilar membrane at corresponding points.
Robert Linggard +2 more
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LIMITED LESIONS OF THE BASILAR MEMBRANE
Archives of Otolaryngology - Head and Neck Surgery, 1929If the hearing sensitivity is plotted graphically, the line joining the points of minimum audibility will seldom, if ever, be an even line, but will vary at certain frequencies up and down. This is the case in both normal and abnormal ears. By the use of tuning forks, cylinders, whistles and sirens, it was discovered that in certain abnormal ears, so ...
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Possible Transform on the Basilar Membrane
The Journal of the Acoustical Society of America, 1971Cochlear models indicate that basilar membrane displacement in the basal region approximates a first-derivative transform of the input signal. Evidence regarding acoustic transients and their cochlear microphone equivalents in the guinea pig is cited to demonstrate this conversion and suggests the plausibility of the observations derived from models.
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Basilar membrane motion in a spiral-shaped cochlea
The Journal of the Acoustical Society of America, 1978To examine the influence of the spiral coiling of the cochlear upon the motion of the basilar membrane, a mathematical model of the cochlea is constructed. The formulation of the problem leads to Laplace’s equation in three dimensions in a curvilinear coordinate system plus corresponding boundary conditons. By basing the choice of the coordinate system
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