ESSV Konferenz Elektronische Sprachsignalverarbeitung

Title: In uence of synthetically varied signal parameters of impulsive vehicle sounds on perceived quality

Authors: Marius Höchstetter, Philipp Seifert, Oliver Jokisch, Jesko L. Verhey, Ulrich Gabbert

Abstract:

A major aspect in the design process of an industrial product is to associate high quality and to evoke customer satisfaction. The product has to fulfill or even to exceed the individual’s expectations. Focusing on the general design of common vehicles, all inherent quality criteria contribute to the customer’s judgment on perceivable product quality. Therefore, the acoustic characteristics prove as a core criterion for car manufacturers to increasingly strive for a positive impression on the auditory sensation. In this respect, impulsive sounds have a substantial influence on perceived quality since they are the decisive sounds at the first contact inside a dealership [1]. The current study focuses on the influence of signal parameters on perceived sound quality and therefore analyzes synthetic variations of the door locking sound. As an initial step, hearing tests were carried out. The attack and decay time of the main impulse as well as the time properties of a second impulse showed highly significant influence on perceived sound quality. Thus, these signal attributes were synthetically altered and further evaluated in a psychoacoustical experiment using relative and absolute comparison tests [2]. According to this approach, the initial attack time appears as the major influence factor on sound quality followed by the decay time. Moreover, the presence of the second impulse contributes to the listeners’s expectation describing the feeling of a securely locked door. The present results enables the vehicle engineer to positively influence the acoustic behavior by optimizing the significant effects of synthetic alterations on perceived quality.


Year: 2015
In session: Klangdesign
Pages: 264 to 271