A Study of Simultaneous-masking and Pulsation-threshold Patterns of a Steady-state Synthetic Vowel: A Preliminary Report  

Bjursäter, U.

Proceedings of Fonetik 2006, the XIXth Swedish Phonetics Conference, Lund, June 7-9, 2006. Working Papers 52, Department of Linguistics, Lund University: 13-16.


This study will be a remake in part of Tyler & Lindblom “Preliminary study of simultaneousmasking and pulsation-threshold patterns of vowels” (1982), with the use of today’s technology. A steady-state vowel as masker and pure tones as signals will be presented using simultaneous-masking (SM) and pulsation-threshold (PT) procedures in an adjustment method to collect the vowel masking pattern. Vowel intensity is changed in three steps of 15 dB. For SM, each 15 dB change is expected to result in about a 10-13-dB change in signal thresholds. For PT, the change in signal thresholds with vowel intensity is expected to be about 3-4 dB. These results would correspond with the results from the Tyler & Lindblom study. Depending on technology outcome, further experiments can be made, involving representations of dynamic stimuli like CV-transitions and diphthongs.


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