Noise Control Treatment

Noise Control Treatment (NCT) assigns acoustic treatments on top of a plate, shell, and Cavity, which represent the model. Noise Control Treatment is a sequence of acoustic layer treatments stacked up/combined together to give you the effect of the desired sound absorption and sound attention between subsystems. The first step in creating NCTs is to create an NCT layer.

An NCT layer is a layer which has information about thickness and material, and can be used in multiple NCTs. When you update NCT layer parameters, the changes are propagated to all NCTs with a single click.

From the Noise Control Treatment ribbon, click NCTs and NCT Layers to display the Create Noise Control Treatment and Create NCT Layer entity editors, respectively.

Figure 1. Noise Control Treatment Ribbon


There are four types of NCT layers available in High Frequency NVH:
  1. Decoupler
  2. Mass barrier
  3. Absorber
  4. Panel