Constructing time phonetically balanced word recognition test in speech audiometry through large written corpora
Adirek Munthuli, Ploypailin Sirimujalin, Charturong Tantibundhit, Chutamanee Onsuwan, Nittayapa Klangpornkun, Krit Kosawat · 2014
Thammasat University Phonetically Balanced Word Lists 2014 (TU PB'14) are created with 5 different lists of 25 Thai monosyllabic words. TU PB'14 is constructed based on Thai phoneme distribution from large-scale written Thai corpora, InterBEST. The two major criteria are phonetic balance and list equivalency. Phoneme occurrences of original 5 Thai monosyllabic word lists (OTL) are also given and discussed. To evaluate reliability and inter-list equivalence of TU PB'14 and OTL lists, all 10 lists are given to 30 normal-hearing subjects to obtain discrimination scores. Discrimination scores of the five TU PB'14 tests yield a curve that is comparable with that of the OTL, but with the former being slightly lower (more difficult). Importantly, all lists of TU PB'14 exhibit relatively equal range of difficulty. To further examine variability of discrimination scores, we plan to conduct similar tests on hearing impaired subjects.