%0 Journal Article %1 Takahashi2007 %A Takahashi, Yukio %A Harada, Noriaki %D 2007 %J Journal of low frequency noise, vibration and active control %K Body Evaluation High Low-frequency Subjective indices, levels, noise, pressure sound surface unpleasantness vibration, %P 15-27 %T A consideration of an evaluation index for high-level low-frequency noise by taking into account the effect of human body vibration %V 26 %X At high sound pressure levels, actual body vibrations (noise-induced vibrations) are induced by low-frequency noise. The purpose of this trial study was to show that considering the effects of noise-induced vibration is effective in evaluating high-level low-frequency noise. Using the A-weighted sound pressure level and the Wk-weighted vibration acceleration level of noise-induced vibration measured on the chest as independent variables, empirical evaluation indices (HLLF1, HLLF2 and HLLF3) for evaluating the unpleasantness caused by high-level low-frequency noise were estimated. The HLLF indices were found to be able to evaluate the unpleasantness caused by high-level low-frequency noise better than the A-weighted pressure level. In addition, the slopes of tentative frequency-weighting characteristics corresponding to the HLLF indices were estimated to be gentler than that of the A-weighting characteristic within 25-50 Hz, which was consistent with many previous results that indicated that noise content at lower frequencies should be given more importance when evaluating low-frequency noise Although there are several areas where the HLLF index needs to be improved before it is put in practical use, the results of this study suggest that high-level low-frequency noise could be more effectively evaluated by taking into account the effect of human body vibration.

@article{Takahashi2007, abstract = {At high sound pressure levels, actual body vibrations (noise-induced vibrations) are induced by low-frequency noise. The purpose of this trial study was to show that considering the effects of noise-induced vibration is effective in evaluating high-level low-frequency noise. Using the A-weighted sound pressure level and the Wk-weighted vibration acceleration level of noise-induced vibration measured on the chest as independent variables, empirical evaluation indices (HLLF1, HLLF2 and HLLF3) for evaluating the unpleasantness caused by high-level low-frequency noise were estimated. The HLLF indices were found to be able to evaluate the unpleasantness caused by high-level low-frequency noise better than the A-weighted pressure level. In addition, the slopes of tentative frequency-weighting characteristics corresponding to the HLLF indices were estimated to be gentler than that of the A-weighting characteristic within 25-50 Hz, which was consistent with many previous results that indicated that noise content at lower frequencies should be given more importance when evaluating low-frequency noise Although there are several areas where the HLLF index needs to be improved before it is put in practical use, the results of this study suggest that high-level low-frequency noise could be more effectively evaluated by taking into account the effect of human body vibration.}, added-at = {2012-01-27T14:10:42.000+0100}, author = {Takahashi, Yukio and Harada, Noriaki}, biburl = {https://www.bibsonomy.org/bibtex/2db79e0d554beb70b3467a96ae13c8f3a/muhe}, file = {A consideration of an evaluation index for high-level low-frequency noise by taking into account the effect of human body vibration.pdf:2007\\A consideration of an evaluation index for high-level low-frequency noise by taking into account the effect of human body vibration.pdf:PDF}, interhash = {ce6aef4bbe3e65f80ac250be070694c3}, intrahash = {db79e0d554beb70b3467a96ae13c8f3a}, journal = {Journal of low frequency noise, vibration and active control}, keywords = {Body Evaluation High Low-frequency Subjective indices, levels, noise, pressure sound surface unpleasantness vibration,}, owner = {Mu}, pages = {15-27}, pdf = {2007\A consideration of an evaluation index for high-level low-frequency noise by taking into account the effect of human body vibration.pdf}, timestamp = {2012-01-27T14:11:13.000+0100}, title = {A consideration of an evaluation index for high-level low-frequency noise by taking into account the effect of human body vibration}, volume = 26, year = 2007 }