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Development and Application of an Objective Metric for Transient Engine Clatter Noise
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 05, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Several powertrain noise phenomena have been studied over the years. Sound quality metrics, like loudness, sharpness, modulation, and tonality, among others, have been developed to characterize powertrain noises. While these readily available metrics work well on steady state and some transient noises, they do not correlate directly with subjective impressions. Moreover, it is difficult to assign a meaningful single rating for time varying noises that may also be associated with simultaneous variations in frequency content. This paper summarizes the process of creating a vehicle level objective metric and its application to blind noise samples to verify correlation with subjective impressions, particularly in association with clatter noise at moderate engine speeds (2000-3500 rpm) with light to moderate throttle tip-ins. The main results include a single number rating and a rating curve as a function of engine speed useful for comparative NVH assessments of multiple vehicles or of multiple hardware iterations on a development vehicle with objectionable clatter content. The latter application is particularly useful since it gives correct feedback to an uninitiated engineer about the hardware changes he or she is proposing. Further this could help in data driven decision making during cost versus benefit assessments.
CitationParbat, A. and Charan, A., "Development and Application of an Objective Metric for Transient Engine Clatter Noise," SAE Technical Paper 2019-01-1519, 2019, https://doi.org/10.4271/2019-01-1519.
Data Sets - Support Documents
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- Duncan , A.E. et.al. 1996
- Head Acoustics Binaural Recording Systems https://www.head acoustics.com/eng/nvh binaural recording systems.htm
- Otto , N. et al. Guidelines for Jury Evaluations of Automotive Sounds SAE Technical Paper 1999-01-1822 1999 10.4271/1999-01-1822
- Lee , S. , Kim , B. , Chae , H. , Park , D. et al. Sound Quality Analysis of a Passenger Car Based on Rumbling Index SAE Technical Paper 2005-01-2481 2005 10.4271/2005-01-2481