Automotive NVH

Analyze noise transfer characteristic

Analyze noise transfer characteristic using TPA

In order to reduce noise in vehicles, the path of noise needs to be determined.
In general, there are two types of detectable noise: Structure-born and Air-born noise.
Both of these noise can be classified and find the path contribution by utilizing the TPA technique.
The goals of TPA are evaluating the contribution of the energy paths between the sources and the receiver, and optimizing the design by setting desirable characteristics for the corresponding paths.

TPA Theory

Analysis of brake creep groan noise transfer characteristic
- Change of operating brake pressure
- An inclination of the road
- Humidity and Brake lining material

Analysis of air-conditioner booming noise transfer characteristic
- Identifying the dominant noise contribution path in air-conditioner