서지주요정보
스피커의 주관적인 평가와 객관적 측정 사이의 상관관계에 대한 연구 = A study on the correlation between subjective and objective data of loudspeakers
서명 / 저자 스피커의 주관적인 평가와 객관적 측정 사이의 상관관계에 대한 연구 = A study on the correlation between subjective and objective data of loudspeakers / 신성환.
저자명 신성환 ; Shin, Sung-Hwan
발행사항 [대전 : 한국과학기술원, 1999].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8009518

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 99035

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The loudspeaker is considered most important part in audio systems, because the loudspeaker is the final electro-mechanical device in the chain of sound-reproduction systems. Traditionally, acoustic performance of loudspeakers has been eva1uated by using the listening test by juries. However, this subjective evaluation method has many problems in the viewpoint of reliability and repeatability as well as time and economy, that objective techniques have been tried to evaluate the acoustic performance. In this study, a statistically sound and complete method in extracting the information from the jury test results is pursued and the subjective rating from listening tests is compared with the objective measured data in order to obtain the correlation between two ratings. For the statistical analysis, the analysis of variance (ANOVA) and Tukey's method are employed for dealing with the data from the listening test. For the objective performance evaluation of loudspeaker sounds, Zwicker's loudness that counts for the human hearing characteristics is calculated for the measured sound signal emitted from each loudspeaker. Two mid- and high-frequency related feelings such as fidelity and softness are dealt with and the evaluation method for a single figure of merit for each impression is established in terms of the loudness. Then, the two subjective impressions are compared with the calculated objective performance indices. It is noted that the correlation coefficients relating fidelity and softness impressions with objective indices are about 0.65 and 0.8, that means high correlation between subjective feeling and loudness-based objective data. It is also found that the physical parameters of the loudspeaker diaphragm such as Young's modulus, loss factor, longitudinal wave speed are not correlated very well with aforementioned two subjective impressions. However, this conclusion is under given data range restricted in this study and further research on this matter should be done. The results of this study may be useful in evaluating commercial or prototype loudspeakers without resorting to very time-consuming and expensive subjective testing.

서지기타정보

서지기타정보
청구기호 {MME 99035
형태사항 vi, 121 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : A, 스피커의 기본 내용. - B, 청음자를 위한 설문. - C, 통계 처리 방법.- D, 손실율 (Loss factor) 계산 방법
저자명의 영문표기 : Sung-Hwan Shin
지도교수의 한글표기 : 이정권
지도교수의 영문표기 : Jeong-Guon Ih
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 55-57
주제 청음실험
라우드니스
충실도
부드러움
상관관계
Listening test
Loudness
Fidelity
Softness
Correlation
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