Abstract
The correlation between ratings made by humans and simulated observers in detecting the same acoustic stimuli was used to estimate the detection (critical) bandwidth, and the form of rectification, temporal integration, and sampling strategy used by the human hearing system. By using small-WT Gaussian noise, bandwidth (W) and duration (T<th>) were manipulated independently, resulting in 18 different combinations of bandwidth and duration for WT=1, 2, and 4. The pattern of correlation, as properties of the simulated observer were systematically varied, indicated the best correlated observer. This tended to be the full-linear observer, consisting of a bandpass filter (which was generally wider than the bandwidth of the signal), full-wave rectifier, and a full (true) integrator. The full-linear observer was slightly, but consistently, better at describing human performance than the energy or envelope detector.
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