Virtual Car Sound Environment for Interactive, Real-time Sound Quality Evaluation

摘要

The pressure on development cycles in the automotive industry forces acoustical engineers tocreate awareness of sound quality in the early stages of development, perhaps even before aphysical prototype is available. Currently, designers have few tools to help them listen to their"virtual" models.For the design of a synthesis platform of in-vehicle binaural sound, the sound should be modeledwith almost identical sound quality perception. A concept is presented where the total sound of avehicle is split in a number of signal components, each with its own sound characteristics. Thesecharacteristics are described in a signal model that allows the analysis of an existing sound into alimited number of signal components: orders, frequency spectra, time envelopes and timerecordings.The introduction of this sound synthesis concept in a hybrid model consisting of networks oftransfer paths, force inputs and noise sources will allow the evaluation of the impact of changesto structural components on the sound quality of in-vehicle sound.This publication will report on the tools and some validation cases of these Sound QualityEquivalent Models.