Abstract
A quantitative procedure is derived to evaluate the relative contribution of envelope cues to speech recognition. Recognition data of 16 consonants in the /aCa/ form were collected using signal‐correlated noise stimuli in seven normal‐hearing listeners. Several distance measures were calculated directly from duration and amplitude of the acoustic envelope. One amplitude distance measure was the Euclidean distance which was computed from the squared difference of the sample‐by‐sample amplitudes. The second measure was the envelope difference index (EDI) [Fortune et al., Ear Hear. 15, 93–95 (1994)] which was computed from the absolute value of the difference of the sample‐by‐sample amplitudes. A multidimensional scaling analysis was used to convert the perceptual confusion matrix into a distance matrix and to normalize the different distance measures. Correlation coefficients were computed between the different distance measures and the perceptual data. Preliminary analysis of data from six stop consonants ...
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