한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2007년도 춘계학술대회논문집
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- Pages.61-64
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- 2007
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- 1598-2548(pISSN)
축소잔향실의 저주파수 확산음장 형성 방법에 대한 연구
Study on method of build up low-frequency diffuse sound field in a scaled reverberation chamber
- 발행 : 2007.05.10
초록
This study is dealt with a method to enhance low-frequency diffuse sound field in a scaled reverberation chamber. Because scaled reverberation chamber has not enough room volume, as a result, it shows a few room modes. So it is not build up low-frequency diffuse sound field. A Helmholtz resonator's arrangement is used to improve spatial uniformity of sound pressure at low frequency. The spatial distribution of sound field has been measured before and after control. The standard deviation of sound field has decreased at 315Hz 1/3 Octave band.