Using an Interactive NVH Simulator to Capture and Understand Customer Opinions about Vehicle Sound Quality

Williams, Roger; Allman-Ward, Mark; Jennings, Paul; Batel, Mehdi

doi:10.4271/2007-26-036

Cited by 15 publications

(1 citation statement)

References 4 publications

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“…Moreover, in order to have an engine-like excitation, which allows meaningful SQ measurements, a real-time engine simulator was used [6]. SQ-equivalent engine models are used in product development, as it enables one to experience and assess the NVH of a virtual (or real) vehicle under various driving conditions [6,13]. The novelty here is the use of such device as a source of excitation.…”

Section: Experimental Validationmentioning

confidence: 99%

Active control of engine noise transmitted into cavities: simulation, experimental validation and sound quality assessment

Oliveira

Sas

Desmet

et al. 2008

The Journal of the Acoustical Society of America

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Active control has been proposed as a possible solution to cope with low frequency noise reduction in vehicles. Active noise control systems tend to be designed with a target on the sound pressure level reduction. However, the perceived control efficiency for the occupants can be more accurately assessed if psychoacoustic metrics are taken into account. The aim of this paper is to evaluate, numerically and experimentally, the effect of (i) a collocated velocity feedback controller and (ii) an adaptive feedforward controller on the engine sound quality in a vehicle mockup. The simulation scheme is described and experimentally validated. The engine excitation is provided by a sound quality equivalent engine simulator, running on a real-time platform that delivers harmonic excitation in function of the driving condition. The controller performance is evaluated in terms of sound quality metrics such as Roughness, Zwicker-and Specific-Loudness. As a result of the control action, Loudness is significantly reduced while Roughness can either be increased or decreased, depending on the role of the controlled order in the modulation mechanism. Eventually, engine sound quality is improved overall.

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Section: Experimental Validationmentioning

confidence: 99%