关键词: 电机；心理声学；听觉模型；粗糙度；调制分析

Abstract: Targeted at the issue of roughness in the auditory perception during motor acceleration, firstly a roughness algorithm based on Sottek auditory model is introduced from the objective calculation of psychoacoustic parameters to realize the mapping between the calculation index of psychoacoustic parameters and the subjective perception of human ear roughness. Furthermore, the modulation frequency and order which cause roughness perception of motor is careful investigated through specific roughness analysis, modulation spectrum analysis and Fourier spectrum analysis. Finally, through virtual modification and playback technology of sound, the potential problem order of the motor is virtual modified and playback, and the improvement effect is visually evaluated before the real improvement of the potential scheme, thus shortening the improvement cycle and reducing the improvement risk.

Key words: Motor; Psychoacoustics; Hearing model; Roughness; Modulation analysis