원문정보
초록
영어
The causes of noise generation according to the classification of indoor spaces are very diverse. Individual happiness is infringed by this noise. In this paper, We tried to visualize the spatial sound characteristics of public places using sound color to express them so that anyone can sympathize. The noise inside a conference room of a medical device company was measured for 100 minutes, and the frequency band was divided into three different types of existing sound pressure expression units. Because the size of the noise is expressed differently depending on the situation, There are cases where there is a difference of opinion between the measurer and the researcher. This noise measurement experiment was conducted, and the sound color was applied to classify it on a log scale considering auditory characteristics. As a result of comparing this with the result expression for different loudness expression units, A specific table in different units yielded almost similar results. In addition, the sound source section for 100 minutes was divided into three analysis sections, the analysis sections were different, and the size of the energy ratio for each analysis section was divided in the form of an envelope. The characteristics of the low-frequency region of the space have a high energy ratio, and the decrease in the energy ratio according to the increase in frequency is constant and regular. You can see that conversations are possible.
목차
1. Introduction
2. Volume expression unit
2.1. dB(A).
2.2. dB(B).
2.3. dB(C).
2.4. dB(D).
3. A7NB(acoustic 7 narrow bandwidth)
4. Meeting room noise measurement for medical equipment specialists
4.1. Medical device company conference room noise
4.2. Spectral expression and sound pressure level expression of conference room noise of a medical device company
4.3. Meeting room noise amplitude statistics for medical device companies
4.4. Sound color marker
5. Conclusion
References