| Popis: |
Signals at several locations along the basilar membrane of an analog ear are half‐wave rectified to represent the neural equivalent of mechanical motion. Two such systems with simple signal addition represent the binaural case of principal interest here. In one experiment, a tone is mixed with noise and applied alike to the two ears. In a second experiment the noise, but not the signal, is inverted before application to one ear. Comparison of signal‐to‐noise ratios in these two experiments represents the so‐called S0Nπ case with an estimate for BMLD which peaks at 12 dB at 400 Hz, falls off gradually at lower frequencies, and falls off more rapidly at higher frequencies. The extension of concepts to the SπN0 case is also considered where, in this case, a form of cancellation rather than summation may apply. Practical and theoretical implications of the model‐demonstrated theory are discussed. |
