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Development of phrase recognition test in Kannada language
Hemanth Narayan Shetty, Akshay Mendhakar
July-December 2015, 29(2):21-27
Sentences are rich in redundancy, and therefore, their identification is often facilitated by the context. The use of phrases introduces limited contextual cues into the process of identification and facilitates the evocation of words. Thus, there is a need to develop phrase recognition test to assess identification abilities.
To develop and validate phrase recognition test in Kannada language for assessing speech recognition in noise.
Settings and Design:
Normative research design was utilized.
Subjects and Methods:
A total of 70 phrases in Kannada language were constructed and 67 of them were selected based on familiarity rating. Ten participants each in two groups were involved for the list equivalency and validation.
Statistical Analysis Used:
Repeated measure of analysis of variance was utilized for the lists equivalency and standardization.
Sixty-seven phrases were shortlisted from 70 phrases through familiarity rating. These phrases were embedded in different 5 signal to noise ratios (SNRs) (−9 dB SNR to −1 dB SNR in steps of 2 dB). Analysis of results showed 50% recognition score at ~−5 dB SNR. In addition, the phrases that were too easy and too difficult were eliminated. From the remaining phrases, five lists of 10 phrases each were constructed and compared for their equal intelligibility in noise. The results revealed no significant differences across the phrase lists.
The homogenous five lists of the Kannada phrase recognition test will be useful to assess identification ability of the listeners and hearing aid benefit.
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© Journal of Indian Speech Language & Hearing Association | Published by Wolters Kluwer -
Online since 4 Dec, 2013