摘要
采用成对比较法对车内声品质进行主观评价,基于反向传播神经网络建立舒适性、动力感和运动感预测模型。提出3个维度的主动声学设计策略和方法,给出调节阶次的目标幅值算式,将声品质与调节阶次进行关联,通过量化分析设计变量与声品质的关系来确定设计值。3个维度的设计方法为:根据乐理中的协和音程规律,舒适性以发火阶及其2倍和3倍频率的谐波阶为调节阶次,各阶次幅值呈等差数列;动力感以发火阶为调节阶次,幅值设计成随转速线性增加,设计变量为随转速的幅值变化率;运动感以发火阶3倍和4倍频率的谐波阶为调节阶次,幅值设计成与发火阶接近。
Here,the paired comparison method was used to subjectively evaluate vehicle interior sound quality,and prediction models of comfort,motivation sense and movement sense were established based on the back propagation neural network.The three dimensions’active acoustic design strategy and method were proposed,the target amplitude formula of adjustment order was given,the sound quality was associated with adjustment order,and the design value was determined by quantitatively analyzing the relation between design variables and sound quality.Design methods for the three dimensions were that according to the concordant interval law in music theory,the firing order and its harmonic orders,i.e.,2 and 3 times its frequency are taken as adjustment orders for comfort,amplitudes of all orders form an equal difference sequence;the firing order is taken as the adjustment order for motivation sense,its amplitude is designed to increase linearly with rotating speed,and the design variable is the amplitude change rate with rotating speed;the harmonic orders of 3 and 4 times the firing order frequency are taken as adjustment orders for movement sense,and its amplitude is designed to be close to the firing order’s.
作者
姜顺明
周涛
王奕轩
吴朋朋
JIANG Shunming;ZHOU Tao;WANG Yixuan;WU Pengpeng(School of Automobile and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2022年第9期107-112,共6页
Journal of Vibration and Shock
基金
国家自然科学基金(51575239)。
关键词
主动声学设计
阶次
目标声
声品质
多维度
active sound design
order
target sound
sound quality
multi-dimension
