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Wavelet-Based Visualization of Impulsive and Transient Sounds in Stationary Background Noise
Technical Paper
2001-01-1475
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Scalograms based on shift-invariant orthonormal wavelet transforms can be used to analyze impulsive and transient sounds in the presence of more stationary sound backgrounds, such as wind noise or drivetrain noise. The visual threshold of detection for impulsive features on the scalogram (signal energy content vs. time and frequency,) is shown to be similar to the audible threshold of detection of the human auditory system for the corresponding impulsive sounds. Two examples of impulsive sounds in a realistic automotive sound background are presented: automotive interior rattle in a vehicle passenger compartment, and spark knock recorded in an engine compartment.
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Citation
Scholl, D., "Wavelet-Based Visualization of Impulsive and Transient Sounds in Stationary Background Noise," SAE Technical Paper 2001-01-1475, 2001, https://doi.org/10.4271/2001-01-1475.Also In
References
- Scholl, D. “Translation-Invariant Data Visualization with Orthogonal Discrete Wavelets” IEEE Trans. On Signal Processing 46 7 2031 2034 1998
- Scholl, D. Amman, S. “A New Wavelet Technique for Transient Sound Visualization and Application to Automotive Door Closing Events” SAE 1999-01-1682
- Amman, S. Blommer, M. “An Auditory Model for the Prediction of Detection Thresholds of Impulsive Sound Events Noise-Con 2000 Newport Beach, CA December 3 2000