Study on Evaluation Index of Tonal Noise Components Generated from Small Fan
* Presenting author
In this study, the new evaluation indices are proposed. These are named Total Tone-to-Noise Ratio and Total Prominence Ratio based on tonal components evaluation indices Tone-to-Noise Ratio and Prominence Ratio defined in the annex such as ECMA-74. These evaluation indices are total values of TNR or PR of each tonal component included in the noise. Therefore, it is possible to evaluate multiple tonal components individually or comprehensively. In our previous study, it has been confirmed that Total TNR and Total PR are effective evaluation indices for subjective annoyance in small axial and centrifugal fan. This study is attempted to determine their subjective evaluation thresholds with the jury test.