Test overview

■ Purpose

Unpleasant noises such as clattering and pitter-pattering may occur while a vehicle is running or equipment is operating, but these noises (fluctuating noise) are often buried in background noise and cannot be extracted by FFT and other methods.
The variable noise analysis visualizes the results of defect improvements before and after the test, excluding the background noise.

■ EUT

Automotive parts, motors and other rotating machinery, etc.

Test state image 1

Test state image 2