Lexical tone perception in Thai normal-hearing adults and those using hearing aids: a case study. - Charturong Tantibundhit; Chutamanee Onsuwan; Nittayapa Klangpornkun; P. Phienphanich; Tanawan Saimai; Nantaporn Saimai; P. Pitathawatchai; Chai Wutiwiwatchai (INTERSPEECH, 2013)