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Advanced Transfer Path Analysis Engineering Services


Generally, when a noise problem arises, it is necessary to identify the sources that produce it before any action is carried out. In many cases, the main noise sources are easily identified. However, in complex systems, it is hard to identify which are the noisiest sources and how they contribute to the measured noise in a certain point.


In automotive and railway applications, in order to reduce and control noise emission for passengers, sources and especially their Transfer Paths contributions should be evaluated. This process requires an experimental approach to determine the frequency transfer relationship between sources, attached structures and the final target represented by the passenger. Then, it is followed by a specific Transfer Path Analysis, typically referred as TPA, to finally issue the contributions. This process is done in partnership with ICR.

Technology background

The Advanced Transfer Path Analysis (ATPA) method is an experimental method focused on the identification of the different noise and vibration sources involved in a noise problem, and on the quantification of their contributions to the overall measured level.


With ATPA technology, we aim to solve two different problems:

  • A: Determining the noise produced by each one of the forces acting on a mechanical system.
  • B: Quantifying the contribution of each part of a vibrating system to the total noise measured at a given location




Airborne and structural borne noise, are both taking into account by applying ATPA technology.

Low to mid-high frequencies, are possible to be analyzed with ATPA technology. Coherent and energetic methods are both developed to cover a wide frequency range.
No source decoupling is needed to apply ATPA technology, suitable for complex systems.
High accuracy and efficiency is guaranteed to solve transfer path problem and for noise reduction with ATPA technology.

Testing Procedure

Application-oriented for your Efficiency

Advanced Transfer Path Analysis in used in various industrial applications: railways and automotive , wind power and civil engineering indutries.

A Powerful and Flexible Range: Extend the Range of your Applications

  1. All the OROS 3-Series analyzers provide a flexible choice of the hardware platform size: portable, rugged and evolutive instruments from 2 to 32 channels, up to 1000+ channels
  2. The user can carry, with the same instrument platform, applications ranging from structural analysis to noise analysis in addition to other rotating analysis.
  3. Software modules such as torsion, balancing (single/dual or multiplane), structural (ODS and modal) and acoustics are provided on the same hardware platform.
  4. Choosing OROS products and services (training, renting and coaching), allow you optimizing continuously your tests on rotating machinery.


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