Designing Sound for Quiet Cars

Paper #:
  • 2016-01-1839

Published:
  • 2016-06-15
DOI:
  • 10.4271/2016-01-1839
Citation:
Vegt, E., "Designing Sound for Quiet Cars," SAE Technical Paper 2016-01-1839, 2016, doi:10.4271/2016-01-1839.
Author(s):
Affiliated:
Pages:
10
Abstract:
The quiet nature of hybrid and electric vehicles has triggered developments in research, vehicle manufacturing and legal requirements. Currently, three countries require fitting an Approaching Vehicle Alerting System (AVAS) to every new car capable of driving without a combustion engine. Various other geographical areas and groups are in the process of specifying new legal requirements.In this paper, the design challenges in the on-going process of designing the sound for quiet cars are discussed. A proposal is issued on how to achieve the optimum combination of safety, environmental noise, subjective sound character and technical realisation in an iterative sound design process. The proposed sound consists of two layers: the first layer contains tonal components with their pitch rising along with vehicle speed in order to ensure recognisability and an indication of speed. The second layer contains broadband elements that ensure audibility when specific frequencies are masked by environment noise.
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