Following article explains how to perform the difference between two maps in Actran VI on a demo case. The demo case is the turbomachine inlet from Actran TM training material workshop. Difference of acoustic pressure radiated by the nacelle inlet (in no flow) between Hardwall and Softwall configurations is performed and visualized. NFF database with the difference of acoustic pressure is finally exported.

Following article explains how to:
- Set-up the reference spectrum of a DSF with a value per discrete frequency or a value per (third-)octave band
- Check that reference spectrum specified by the user has been accurately applied

Following article aims at:
- Providing guidelines for
+ either the conversion of Nastran model into an Actran model
+ or the use of Nastran modal basis into Actran
- Validating on a simple model:
+ Conversion of Nastran structure model into Actran structure model
+ Use of Nastran structure modal basis in Actran

Incident power is commonly assessed to compute structure TL under Diffuse Sound Field excitation. Following article explains how to compute an equivalent incident power when structure is loaded by a deterministic excitation such a distributed pressure.

Periodic boundary conditions enable to model an angular sector instead of a full 3D model. This leads to lower computation time and lower consumed RAM. Following article explains how to define periodic boundary condition in Actran. It also presents a demo case validating the feature by comparing results on an angular sector and results on a full 3D model.