• Title/Summary/Keyword: 심리음향 물리량

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On the Subjective Evaluation Method of Concert Hall Acoustics (콘서트 홀 음향의 주관평가 방법에 관하여)

  • 박창섭
    • Proceedings of the Acoustical Society of Korea Conference
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    • 1992.06a
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    • pp.185-188
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    • 1992
  • 본 고에서는 홀의 음향측정에서 지금까지 주로 사용되고 있는 물리변수들을 추출하여 물리실험을 행한 후 이 결과치와 심리실험 결과를 상호분석하여 어떠한 홀에 대한 최종적인 판단은 무대의 연주자나 청중에 의하여 판단되어지고 있는 것을 감안하여 주관적 반응과 상관이 높은 물리량을 얻고자함에 있다.

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A Study of the Sound Quality Characteristics for Environmental Noise Assessments Parameters (음질을 고려한 환경소음 평가 인자의 기여도분석에 관한 연구)

  • Jo Kyoung-Sook;Cho Yeon;Hwang Dae-Sun;Hur Deog-Jae
    • The Journal of the Acoustical Society of Korea
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    • v.25 no.3
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    • pp.129-136
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    • 2006
  • For the environmental noise assessments. A weighted equivalent noise level (LeqA) is used to measure the time varying environmental noise. However, it is not appropriately reflect various environmental noise features and human emotions. The human perception of the noise is affected largely by the psychoacoustic characteristics of noise as well as the sound pressure level In this study, the effective factors of noise qualify are analyzed using the subjective assessment and statistical analysis of environmental noise, such as road traffic noise. construction site noise, noise in daily living. and other. The analysis methodology is composed to three steps as follows : firstly, the values of the sound qualify metrics of various noise sources were analyzed. And to classify the noise sources, we conducted a cluster analysis using sound quality metrics. Secondly, subjective jury testing was carried out using the methods of paired comparisons and semantic differential. Finally, the correlation between the subjective parameters and the noise quality metrics were analyzed. As a result. the human perception characteristics of the various environmental noise are described in some physical parameters of the noise qualify metrics.

Physiological Signal Analyses for Designing Knitted Fabric Sound (편성물의 소리디자인을 위한 생리신호분석)

  • 김춘정;조자영;하지영;조길수
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2003.05a
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    • pp.1-4
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    • 2003
  • 본 연구는 경편성물의 특성에 영향을 미치는 중요한 구조변수인 조직, 편환의 계폐여부, 가이드바의 상호 움직임 방향에 따른 소리특성과 생리적 반응 사이의 관계를 파악함으로써 총합적 감성소재 설계를 위한 기초 자료를 제공하고자 하였다. 직물소리발생장치를 이용하여 7가지의 경편성물에 대한 마찰음을 녹음한 후, 이를 마찰음이 유발하는 생리반응을 측정하여 slow alpha파, fast beta파, ECG R-R, RESP, HF/LF, SCL, PV등을 분석하였다. 조직에 따라서는 LPT, Loundness(Z), Roughness(Z)와 Fluctuation strength(Z) 가장 큰 Sharkskin에서 fast beta파, ECG R-R, RESP는 증가하였으며 slow alpha파, PV, HF/LF는 감소하였다. 편환의 개폐여부에서는 폐환보다는 개환에서 Loudness(Z), Sharpness(Z), Fluctuation strength(Z)가 증가하였으며 RESP는 증가하고 HF/LF는 감소하여 개환이 더 불쾌한 감성을 유발하였다. 가이드바의 상호 움직임 방향은 counter보다는 parallel에서 slow alpha의 변화량이 감소하고 fast beta의 변화량이 증가하여 counter보다는 parallel이 더 불쾌한 감성을 유발하는 것으로 보인다. 또한 편성물의 음향특성 중 ΔL, Δf 와 Roughness(Z), Fluctuation Strength(Z)가 생리반응을 예측하는 중요한 요인으로써 나타났다.

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Classification of Apparel Fabrics according to Rustling Sounds and Their Transformed Colors

  • Park, Kye-Youn;Kim, Chun-Jeong;Chung, Hye-Jin;Cho, Gil-Soo
    • Science of Emotion and Sensibility
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    • v.5 no.2
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    • pp.23-28
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    • 2002
  • The purpose of this study was to classify apparel fabrics according to rustling rounds and to analyze their transformed colors and mechanical properties. The rustling sounds of apparel fabrics were recorded and then transformed into colors using Mori's color-transforming program. The specimens were clustered into five groups according to sound properties, and each group was named as ‘Silky’,‘Crispy’,‘Paper-like’,‘Worsted’, and ‘Flaxy’, respectively. The Silky consisted of smooth and soft silk fabrics had the lowest value of LPT, $\Delta$f, ARC , loudness(B) and sharpness(z). Their transformed colors showed lots of red portion and color counts. The Crispy with crepe fabrics showed relatively low loudness(z) and sharpness(B), but diverse colors and color counts were appeared. The Paper-like showed the highest value of LPT, $\Delta$f and loudness(z). The Worsted composed of wool and wool-Like fabrics showed high values of LPT, $\Delta$f, loudness(z) and sharpness(B). The transformed rotors of the Paper-like and Worsted showed the blue mostly but color counts were less than the others. The Flaxy with rugged flax fabric had the highest fluctuation strength, and their transformed colors showed diversity.

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