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Sound Character of Electric Vehicles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 17, 2011 by SAE International in United States
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The electrification of vehicle propulsion has caused a significant change in many areas including the world of vehicle acoustics. Comments from the media currently range from “silently hums the future” to “electric car roars with V8 sound”. Decades of experience in designing brand-specific vehicle sound based on noise and vibration generated by combustion engines cannot be simply transferred to the upcoming vehicles driven purely by electric powertrains. Although electric vehicles are almost always considerably quieter than those powered by internal combustion engines, the interior noise is characterized by high-frequency noise components which can be subjectively perceived as annoying and unpleasant. Moreover, such disturbing noise is no longer masked by combustion engine noise. Fundamental questions regarding the sound design of electric vehicles have yet to be answered: it remains unclear what exactly the interior noise of an electric vehicle should sound like. Also questions regarding the approach to achieving a particular interior sound (e.g., use of artificially generated noise for desired sound) are still open. There is also an ongoing debate on the need for electric vehicles to emit additional noise in order to prevent the endangerment of pedestrians. The use of additional noise sources could work against the hope for noise reduction. This paper is intended as a contribution to the current discussion on what the target noise of electric vehicles could sound like and what possibilities currently exist for NVH engineers to design the sound of electric cars.
CitationGovindswamy, K. and Eisele, G., "Sound Character of Electric Vehicles," SAE Technical Paper 2011-01-1728, 2011, https://doi.org/10.4271/2011-01-1728.
- Wittler, M. Abtahi, R. Pischinger, S. Eisele, G. Akustik und -Schwingungen von Hybridfahrzeugen Aachener Kolloquium Fahrzeug und Motorentechnik 2009
- Genender, P. Wolff, K. Eisele, G. Jung, G. Akustikentwicklung eines Elektrofahrzeuges mit Range-Extender-Einheit Aachener Akustik Kolloquium 2009
- Belluscio, M. Ruotolo, R. Schönherr, C. Schuster, G. Eisele, G. Genender, P. Wolff, K. Van Keymeulen, J. Sound Design for Diesel Passenger Cars Aachener Akustik Kolloquium 2008
- Alt, N. Wiehagen, N. Schlitzer, M. W. Vehicle Interior Noise Simulation for Evaluating Prototype Powertrains in the Vehicle, Part 1 and 2 ATZ 103 2001 5 6 2001
- Whoriskey, P. Nissan adds noises to Leaf electric vehicle as safety precaution The Washington Post 12 th June 2010
- Liggett, B. Prius Gets Optional Sound Enhancer to Protect Pedestrians http://inhabitat.com/2010/08/24/prius-gets-optional-sound-enhancer-to-protect-pedestrians/ 24 th August 2010