Customizing vehicle interior noise to reflect the brand image

Noise control engineers in their endeavors to make vehicles as quiet as possible have succeeded thanks to major strides in measurement techniques. The different noise sources in vehicles are now quite well known. Additionally, sounds may be simulated and easily modified on simple PCs. Through psychoacoustic means, we are able to evaluate and understand the effects of noise on human beings. A totally new approach to vehicle interior noise now exists. Engine noise conveys meaningful information to the driver, and thus, noise characteristics constitute a design attribute. Manufacturers are increasingly establishing design rules for the sound of their cars to meet special requirements and preferences of their potential customers. The design rules are meant to yield a vehicle brand-specific sound. This paper analyzes the positive and negative effects of noise on both driver and passengers in a vehicular environment and how sound is used as a marketing and public relations instrument. We also examine briefly the way sound-effect design affects a project’s progress, cost and time limits. An example will demonstrate how the interior noise of a basic car is modified to either sound like an upper-class luxury sedan or like a high-performance sports car.