Evaluation of substitution monopole models for tire noise sound synthesis

• Published in: Mechanical systems and signal processing Vol. 24; no. 1; pp. 240 - 255
• Main Authors: Berckmans, D., Kindt, P., Sas, P., Desmet, W.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 2010; Elsevier
• Subjects: Acoustics; Aeroacoustics, atmospheric sound; Architectural acoustics; Auralization; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Noise: its effects and control; Physics; Sound quality; Substitution monopoles; Tire noise models; Transduction; acoustical devices for the generation and reproduction of sound; Sound quality; Tire noise models; Auralization; Substitution monopoles; Sound reproduction; Motor car; Modeling; Monopole; Tyre; Architectural acoustics; Audio acoustics; Pressure measurement; Room acoustics; Transfer function; Localization; Aeroacoustics; Regularization; Sound synthesis
• ISSN: 0888-3270; 1096-1216
• DOI: 10.1016/j.ymssp.2009.06.005

Due to the considerable efforts in engine noise reduction, tire noise has become one of the major sources of passenger car noise nowadays and the demand for accurate prediction models is high. A rolling tire is therefore experimentally characterized by means of the substitution monopole technique, suiting a general sound synthesis approach with a focus on perceived sound quality. The running tire is substituted by a monopole distribution covering the static tire. All monopoles have mutual phase relationships and a well-defined volume velocity distribution which is derived by means of the airborne source quantification technique; i.e. by combining static transfer function measurements with operating indicator pressure measurements close to the rolling tire. Models with varying numbers/locations of monopoles are discussed and the application of different regularization techniques is evaluated.