Transient Sound Pressure Level

Application ID: 105481

For transient acoustic problems, there are different sound pressure level metrics that have been defined in the literature and in measurement standards. These metrics are important to know when comparing results from a transient acoustic simulation to measurements from a sound level meter or when trying to make results from a transient simulation easier to interpret on a logarithmic scale.

This application demonstrates the following:

  • Computing Frequency Weighted pressure for a transient signal using a window function.

  • Computing Time Weighted Sound Level using a convolution in the time domain.

  • Computing Time Average Sound Level over a user defined time period using a parametric sweep.

A detailed description of this model can be found in our blog post "Computing Transient Sound Pressure Levels in COMSOL®".

This model example illustrates applications of this type that would nominally be built using the following products: