Abstract
Narrow-band clicks (approximately 200 Hz wide) with center frequencies of 250, 1000, 4000, and 6300 Hz were given to three experienced listeners at interaural intensity differences (ΔI) of 3, 6, and 9 dB. A reference sensation level of 30 dB was used throughout, and listeners asked to center the click image with an opposing time difference (Δt). Although two ranges of compensatory time (Δt) could often center the image only the smaller times were considered. Trading-ratio slopes for the four transients, in order of increasing click frequency, were: 25, 20, 50, and 40 μsec/dB. Increasing the click bandwidth around the same center frequencies (while maintaining the sensation level constant at 30 dB) did not significantly affect the trading ratios. The trading-ratio results will be compared to some lateralization (jnd) data for time and for intensity to see whether both kinds of data indeed reflect the same underlying process.
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