Virtual Car Sound Synthesis Technique for Brand Sound Design of Hybrid and Electric Vehicles LMS International

Format:

Conference/Event

Author/Creator:

Sarrazin, Sarrazin, author.

Contributor:

Janssens, Karl

Van der Auweraer, Herman

Conference Name:

SAE Brasil International Noise and Vibration Colloquium 2012 (2012-11-25 : Sao Paulo, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

One of the practical consequences of the development of low CO₂emission cars is that many of the traditional NVH sound engineeringprocesses no longer apply and must be revisited.Different and new sound sources, new constraints on vehicle bodydesign (e.g., due to weight) and new sound perceptioncharacteristics make that the NVH knowledge built on generations ofinternal combustion-powered vehicles cannot be simply transferredto Hybrid and Electric Vehicles (HEV). Hence, the applicability oftools must be reviewed and extensions need to be developed wherenecessary.This paper focuses on sound synthesis tools as developed forICE-powered vehicles. Because of the missing masking effect and themissing intake and exhaust noise of the Internal Combustion Engine(ICE) in electric vehicles, on one hand electric vehicles arequieter than traditional vehicles. On the other hand, othercomponents such as HVAC system, alternator, vacuum pump,power-steering pump, cooling systems, transmission systems,inverter noise, et cetera, become more important and generate newcomplex sound signatures. Typically, their interior noise iswell-defined by high-frequency noise components which can besubjectively experienced as annoying, hence the increasedimportance put to sound quality aspects and perceptual-relevant NVHstudies.In the paper, a Virtual Car Sound (VCS) synthesis technique forHEV is designed. This approach turns out to be a very helpfulengineering tool to design a brand specific sound and allowsreproducing typical sound features of HEV during real-time drivingsimulation based on a Sound Quality Equivalent Model (SQE). SeveralSQE models were constructed for different powertrains of HEV invarious engine conditions. Finally, the results of the soundmetrics and listening tests indicate a comparison between thesynthesized sounds and the original sound recordings

Notes:

Vendor supplied data

Publisher Number:

2012-36-0614

Access Restriction:

Restricted for use by site license