Method for Sound Quality Evaluation of Frequency Conversion Compressor

A-weighted sound pressure level does not fully satisfy the requirements of sound quality evaluation of electro-mechanical products.According to the noise analysis of frequency conversion compressor,an experiential formula of psychoacoustics annoyance is established considering loudness and sharpness synthetically,a pair-wise comparison method is proposed for subjective evaluation,and a pre-estimated model of sound quality subjective evaluation is obtained based on the linear correlation analysis.The research results indicate that the annoyance is more sensitive than dB(A) in sound quality evaluation,the correlation between psychoacoustics annoyance and subjective evaluation approaches to 0.917 3,exceeding remarkably 0.711 9 of dB(A).The psychoacoustics annoyance is reasonable to serve as a comprehensive index of sound quality evaluation for reflecting the real influence of noise on a person.