Abstract:Subjective sound quality evaluation for cabin interior noise was conducted by using paired comparison method, and the prediction models of three dimensions, comfort, power and sport, were established based on the back propagation neural network. The strategies and methods for active sound quality design were proposed, and the target amplitude formulas of tuning orders were presented. The sound quality was correlated with the tuning orders, and the design parameters were determined by quantitative analysis of the relationship between design parameters and sound quality. According to the consonant intervals in music theory, the comfort dimension selected firing order and its 2 and 3 harmonics as the tuning orders with amplitudes in an arithmetic sequence. The power dimension selected firing order as the tuning order, which is designed to increase linearly with the engine speed. The sport dimension selected 3 and 4 harmonics of the firing order as the tuning orders, which are designed to be close to the firing order.
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