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Are you curious about what your machine will sound like? 

Do you need a tool to accurately estimate the Sound Pressure Level [SPL] and Sound Power Level [SWL] of your system in dB and Pa?

Look no further!
FBG.SoundAnalyzer uses transient dynamics simulation performed in RecurDyn to calculate acoustic parameters on the surface and in the ambient space. With this powerful tool, you can evaluate and optimize your development based on known parameters and specifications. Don‘t miss out on the opportunity to make your machine run as smoothly and quietly as possible.

How close are our simulations to reality?

This video showcases a compelling comparison between an experiment and a simulation in an easily understandable manner. We conducted a test where we excited one of our objects using a shaker to produce a melody, much like a loudspeaker. We replicated the same process within the simulation. Throughout the video, there is a seamless switch between the simulation and the actual measurement, both with sound (on air) and without sound (mute), allowing viewers to observe the similarities and differences between the two.

Precision Unveiled: FBG.SoundAnalyzer vs. Real-World Measurements in an Anechoic Chamber

This image showcases a comparison between the FBG.SoundAnalyzer's simulations and real-world measurements, conducted in an anechoic chamber to ensure the accuracy and reliability of data. The side-by-side analysis highlights the precision of the FBG.SoundAnalyzer in replicating the sound profiles and dynamics encountered in controlled environments, validating its effectiveness and utility in noise analysis and mitigation strategies.


In dynamic simulations, contacts between structures cause vibrations. These vibrations depend on material properties, contact geometry, and damping characteristics. When vibration frequencies approach the structures' natural frequencies, resonance can amplify amplitudes, generating sound waves. The FBG.SoundAnalyzer investigates how such vibrations in dynamic systems produce sound, a key process for reducing unwanted noise

The Outputs

The main outputs of the FBG.SoundAnalyzer are:

  • Sound Pressure Level (SPL) on Surface: It calculates and provides the SPL values directly on the surface of the analyzed structure. This information helps in understanding the sound intensity at different locations on the surface.

  • SPL in Near and Far Fields: The FGB.SoundAnalyzer also calculates the SPL in the near field (close to the source) and the far field (at a distance from the source). This allows for a comprehensive analysis of the sound propagation characteristics.

  • Sound Power Level (SWL) on Surface: It determines the SWL specifically on the surface of the structure. The SWL provides an overall measure of the sound power radiated by the structure, helping in assessing its acoustic performance. 


Dynamic Acoustic Simulation in a Nutshell:

The acoustic simulation with FBG.SoundAnalyzer is based on the Time Domain Boundary Element Method [tdBEM], which follows a classical flexible multibody simulation [MfBD].  

Here, the individual components are first assembled as usual with finite elements [FE] and coupled to form an overall system with the typical forces and contacts. This forms the basis for the dynamic analysis under different scenarios.

The acoustic simulation follows this scheme:
Starting from the Euler, continuity and process equations, the Kirchhoff integral equation is defined as a function of space and time. This partial differential equation provides a way to very accurately describe the acoustic field of intransiently vibrating structures.

The results generated in this way can be queried directly at the surface or at any point in the near and far field.

Explore Our Engineering Resources

Validation Paper: Technical insights and performance data. Explore crucial results.

Brochure: Features, applications, and advantages. Uncover potential and applications.

Access detailed insights and practical info for using the FBG.SoundAnalyzer in noise reduction across industries directly here.


The NVH / Sound Experts in our Team