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KMID : 0858620080120010010
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Korean Journal of Audiology
2008 Volume.12 No. 1 p.10 ~ p.15
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Study of the Speech i Noise Test Using a Multi-Talker Babble Noise
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Park Chul-Ho
Lee Sung-Hee
Shim Hyun-Joon
Lee Seung-Joo
Yoon Sang-Won
Lee Kyoung-Won
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Abstract
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Background and Objectives: The most common complaint of individuals with hearing loss is a difficulty in understanding speech in background noise. But traditional hearing tests in quiet environment can not reflect one’s ability of speech recognition in real life sufficiently. We aimed to develop of a speech in noise test using a multi-talker babble noise and present the results of normal hearing listeners.
Subjects and Methods: Sixty listeners (each ten listeners of all ages from teens to sixties) with normal hearing were participated. Spondee words and multi-talker babble noise made from recording the voice of 10 male and 10 female were
presented by a loudspeaker at a distance of one meter in front of the subject. Fifty percentsignal to noise ratios (SNRs) were measured at 50 dB HL, 60 dB HL, 70 dB HL, and 80 dB HL of noise intensity.
Results: Mean 50% SNR for age showed -13.9±1.9 dB, -14.0±2.2 dB, -14.2±1.8 dB, -13.4±2.1 dB, -11.5±2.3 dB, and -12.6±2.0 dB in teens, twenties, thirties, forties, fifties, and sixties. The result of fifties was significantly worse than teens, twenties, thirties, and forties. Mean 50% SNR for noise intensity showed significantly better in 80 dB compared with 50, 60, 70 dB HL. Mean 50% SNR of the elderly group aged 41-69 years was worse than the young group aged 10-39 years.
Conclusions: The present study suggest a speech in noise test using a multi-talker babble noise and spondee words and present normative data of 50% SNR for age group and for noise intensity.
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KEYWORD
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Hearing loss, Noise, Haering test, Speech, Singnal
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