Applicability of Different Loudness Models to Time-Varying Sound in Vehicle

Paper #:
  • 2010-01-0753

Published:
  • 2010-04-12
Citation:
Zhang, L., "Applicability of Different Loudness Models to Time-Varying Sound in Vehicle," SAE Technical Paper 2010-01-0753, 2010, https://doi.org/10.4271/2010-01-0753.
Pages:
8
Abstract:
Three sound loudness calculation models, including Zwicker instantaneous loudness model, Moore instantaneous loudness model and Moore time-varying loudness model, and the cited Zwicker time-varying loudness model in ArtemiS, were applied to calculate the time-varying loudness of three typical vehicle sounds, in particular. They are steady engine idle noise, impulsive door closing noise and order-swept electric vehicle pass-by noise. Based on the loudness amplitude and time-frequency loudness results, the applicability of the four loudness models to time-varying sounds was analyzed and compared. It was found that, both Zwicker and Moore time-varying loudness models are more reliable than Zwicker and Moore instantaneous loudness models if the sound amplitude and frequency vary tempestuously. And the time-frequency result of Moore instantaneous loudness model can be very helpful to noise source identification and mechanism analysis.
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