한국어음을 이용한 다화자잡음의 개발시안

서지정보

ㆍ발행기관 : 한국청각언어재활학회 ㆍ수록지정보 : 청능재활 / 4권 / 1호
ㆍ저자명 : 이경원, 이재희, 이정학

목차

INTRODUCTION
METHODS AND MATERIALS
RESULTS
DISCUSSION AND CONCLUSIONS
REFERENCES

한국어 초록

난청인에 대하여 인공와우(cochlear implant), 보청기 등을 포함한 적절한 증폭기기의 선택 및 조절, 착용효과의 측정 등을 위해 조용한 곳에서의 순음청력검사 및 어음이해도의 평가는 일상적으로 행하여지고 있지만, 잡음(noise)을 이용한 평가는 그렇지 못하다. Carhart & Tillman5)은 그이유를 소음과 관련된 평가에 사용할 수 있는 잡음과 검사방법 등에 대한 표준화가 이루어지지 않았기 때문이라고 할 수 있다. 그렇지만 중추신경성난청(central auditory processing disorder) 등 청각손실의 평가, 보청기 및 인공와 우의 평가, 청능재활 등을 효과적으로 수행하기 위해서는 조

영어 초록

The purpose of the present study was to construct a multitalker babble stimuli based on Korean speech as well as to compare the spectrum of the Korean babble stimuli with that of English babble noise. The development of this multitalker babble noise would also provide better insights into the evaluation of hearing assistive devices, the evaluation of central auditory processing disorder (CAPD), and auditory training for Korean hearing-impaired listeners. Sixteen young normal-hearing speakers (8 males and 8 females) whose first language is Korean participated. All the participants were told to speak the sentences used in standardized Korean speech audiometry, newspaper, and magazine with conversational level for about two minutes. Each sentence was normalized to have the same RMS energy before forming Korean babble noise. The long-term average speech spectra (LTASS) of all utterances were analyzed with computerized speech lab (CSL) that is one of the leading speech analysis systems for acoustic phonetics. Results have showed that there were no differences among Korean LTASS of sentences, newspaper, and magazine (p<0.05). As expected, we found significant differences in spectral features between male-spoken and female-spoken LTASS. The level difference of the Korean LTASS was approximately 37 dB between low and high frequencies, indicating larger intensity in Korean that in English. Differences of 16 dB were
also found in the LTASS of between Korean and English multitalker babble noise, suggesting the possible differences of acoustic properties between Korean and English speech.

KEY WORDS：Babble noise·Multi-talker·LTASS (long term average speech sound).

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