A Comparison between Horizontal and Vertical Interchannel Decorrelation
AbstractThe perceptual effects of interchannel decorrelation on perceived image spread have been investigated subjectively in both horizontal and vertical stereophonic reproductions, looking specifically at the frequency dependency of decorrelation. Fourteen and thirteen subjects graded the horizontal and vertical image spreads of a pink noise sample, respectively. The pink noise signal had been decorrelated by a complementary comb-filter decorrelation algorithm, varying the frequency-band, time-delay and decorrelation factor for each sample. Results generally indicated that interchannel decorrelation had a significant effect on auditory image spread both horizontally and vertically, with spread increasing as correlation decreases. However, it was found that the effect of vertical decorrelation was less effective than that of horizontal decorrelation. The results also suggest that the decorrelation effect was frequency-dependent; changes in horizontal image spread were more apparent in the high frequency band, whereas those in vertical image spread were in the low band. Furthermore, objective analysis suggests that the perception of vertical image spread for the low and middle frequency bands could be associated with a floor reflection; whereas for the high band, the results appear to be related to spectral notches in the ear input signals. View Full-Text
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Gribben, C.; Lee, H. A Comparison between Horizontal and Vertical Interchannel Decorrelation. Appl. Sci. 2017, 7, 1202.
Gribben C, Lee H. A Comparison between Horizontal and Vertical Interchannel Decorrelation. Applied Sciences. 2017; 7(11):1202.Chicago/Turabian Style
Gribben, Christopher; Lee, Hyunkook. 2017. "A Comparison between Horizontal and Vertical Interchannel Decorrelation." Appl. Sci. 7, no. 11: 1202.