A Comparison of Objective Measurements for Predicting Selected Subjective Spatial Attributes
A controlled subjective experiment was undertaken to evaluate the relative merits of objective measurement techniques for predicting selected perceived spatial attributes of reproduced sound. The stimuli consisted of a number of anechoic recordings of single sound sources that were reproduced in a simulated concert hall and captured using a number of simulated multichannel microphone techniques. These were reproduced in a listening room and the subjects were asked to judge the perceived source width and perceived environment width of each stimulus. A number of objective measurements were made at the listening position and these were then compared with the subjective judgements. The results showed that a perceptually-grouped measurement of the experimental stimuli using a technique based on the interaural cross-correlation coefficient matched the subjective judgements most accurately, though the difference between this measurement and a number of other types was small.
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