Vehicle Sound Quality Evaluation through Virtual Prototyping

This paper is concentrated for evaluating the sound quality of exhaust noise in the exhaust system design and development process. The present study shows the feasibility of using non-conventional noise cancellation technique. The effectiveness of such a technique is investigated using Ricardo WAVE, a computational engine simulation technique that uses a one-dimensional finite-difference formulation. The graphical interpretation using octave frequency spectra and 3-D colour maps of both an unmodified and a bridged engine are presented for both steady state and transient engine cases. A sound quality analysis is also presented using the psychoacoustic metrics of Loudness, Fluctuation, Strength and Boom. The main aim of this paper is to use of 1-D tool to simulate sound quality performance. Both cases like steady state and transient state conditions are simulated to evaluate vehicle sound quality with changing the exhaust configuration.