考虑工作背压下的吸油烟机声品质建模

Study on sound quality evaluation parameters of range hood based on actual working back pressure

为了改善吸油烟机工作噪声大、听感差的不良用户体验,结合行业相关标准,建立了工作噪声试验室,增加了压力可调的背压系统,以模拟用户实际使用条件。以吸油烟机实际工作状态声品质为研究对象,利用多元线性回归将噪声样本的心理声学参量与主观评价结果进行拟合,获得考虑工作背压下的吸油烟机声品质客观评价模型。该声品质评价模型可有效捕捉交流电机产生的异常共振噪声,评价精度提升了17%,最终客观评价精度达到94.6%。在产品开发初期将吸油烟机工作时的声品质等级作为衡量产品优劣的关键指标,将提升研发、品质、生产各链条对异常噪声的识别能力,统一评价标准,进而提高质量控制水平。

In order to improve the user's negative experience of high noise and poor listening sensation in the operation of range hoods,a working noise test room was established in combination with relevant industry standards,and a pressure adjustable back pressure system was added to simulate the actual usage conditions of users.Taking the sound quality of the actual working state of the range hood as the research object,multiple linear regression was used to fit the psychological acoustic parameters of the noise sample with the subjective evaluation results,and an objective evaluation model for the sound quality of the range hood considering working back pressure was obtained.The sound quality evaluation model can effectively capture the abnormal resonance noise generated by AC motors,improving the evaluation accuracy by 17%,and ultimately achieving an objective evaluation accuracy of 94.6%.In the early stage of product development,the sound quality level of the range hood during operation was used as a key indicator to measure the quality of the product,which improved the ability of R&D,quality,and production chains to identify abnormal noise,unified evaluation standards,and improved the level of quality control.