Measures to Quantify the Sharpness of Vehicle Closure Sounds

971910

05/20/1997

Event
SAE Noise and Vibration Conference and Exposition
Authors Abstract
Content
Impulsive sound events (i.e. door closing) are often characterized as being undesirably sharp sounding. A high degree of perceived sharpness is normally related to large amounts of high frequency energy relative to the low frequency energy. In this project third octave data generated from a filterbank was used to calculate the center of gravity (cg) of the third octave bands. The result is the frequency corresponding to the centroid of the third octave data. Sounds with substantial high frequency energy have a centroid location that occurs at a higher frequency.
The mean of the third octave cg over the duration of the transient event was investigated, in addition to sharpness as defined by Aures [1] and calculated on a commercially available analyzer. Correlation analyses to subjective data indicate that the mean third octave cg and the commercially available method produce comparable results for the vehicle closure sounds studied here. Sounds with more high frequency energy during the Initial impact were sharper, while sounds with substantial low frequency energy following the impact were less sharp.
Meta TagsDetails
DOI
https://doi.org/10.4271/971910
Pages
4
Citation
Champagne, A., and Amman, S., "Measures to Quantify the Sharpness of Vehicle Closure Sounds," SAE Technical Paper 971910, 1997, https://doi.org/10.4271/971910.
Additional Details
Publisher
Published
May 20, 1997
Product Code
971910
Content Type
Technical Paper
Language
English