Abstract: With the continuous reduction of air conditioning noise, sound quality issues have become a new important research direction for air conditioners. Through multiple comparative studies, Establishes a subjective sound quality evaluation method based on the reference scoring method, and the timeliness and accuracy of the evaluation results are higher. Through the sensitivity analysis of objective evaluation parameters of sound quality such as A-weighted sound level, loudness, sharpness, roughness, speech intelligibility, and prominence ratio, based on the multiple linear regression analysis method, an objective evaluation model of sound quality is established. The conformity between the objective evaluation model of sound quality and the subjective evaluation results of sound quality exceeds 90%.

Key words: Outdoor unit of air conditioner, Sound quality, Subjective and objective evaluation, Multiple linear regression