First International Conference on Spoken Language Processing (ICSLP 90)
To investigate the effects of the internal phonetic prototype on auditory discrimination, two groups of subjects with different phonological systems were tested for auditory discrimination of two different synthesized speech continua. One group was Japanese, and the other was Spanish. Each group received an AX discrimination task both with a typical Japanese /b/and a typical Spanish /b/ as the standard stimulus. The estimated dispersion width for a physically identical stimulus pair was smaller when the standard was a typical realization of the phoneme /b/ for each group than when it was atypical. Thus, even in a discrimination task within a category, the difference in the phonological system results in some behavioral differences. These behavioral differences are discussed in relation to a long term memory factor, or an internal prototype which may be involved in auditory information processing of speech sounds.
Bibliographic reference. Tsuzaki, Minoru / Gurlekian, Jorge A. (1990): "Effects of different standards on the within-category discrimination of synthesized /ABA/ sequences: comparison between Japanese and Spanish", In ICSLP-1990, 565-569.