BACKGROUND Acoustic analysis had been well incorporated into clinical evaluation and management of children with speech disorders for many years. The aim of this study is to investigate developmental changes in vowel production in Mandarin-speaking children using acoustic study analysis. METHODS A total of 22 children from 5-12 years old were analyzed in this study. Each child read a list of ...

This paper presents the results of a closed-set recognition task for 64 consonant-vowel sounds (16 C X 4 V, spoken by 18 talkers) in speech-weighted noise (-22,-20,-16,-10,-2 [dB]) and in quiet. The confusion matrices were generated using responses of a homogeneous set of ten listeners and the confusions were analyzed using a graphical method. In speech-weighted noise the consonants separate in...

background: acoustic noise is one of the universal pollutants of modern society. although the high level of noise adverse effects on human hearing has been known for many years, non-auditory effects of noise such as effects on cognition, learning, memory and reading, especially on children, have been less considered. factors which have negative impact on these features can also have a negative ...

researchers suggested that the individual fit test be conducted to estimate the protection effectiveness of workers’ hearing protection device (hpd) while working. practically, it is convenient to conduct single, instead of multiple, fit test measurement. this study examined if a single trial of earplug fit test can represent multiple performances. additionally, it investigated how much noise e...

in this article, the low back vowel /a/ in word-final positions in eghlidian dialect, one of persian dialects, is studied. this vowel is represented phonetically as [a], [o] and [@] in different phonetic environments. therefore many words were collected via interviewing ten native speakers so that these different alternant forms can be accounted for appropriately. since one of the authors of th...