Which software application published by MSC Software has a feature/module called FFT_Actran_VA? What is FFT_Actran_VA?

The software application published by MSC Software that features the module called **FFT_Actran_VA** is **MSC Nastran**. **FFT_Actran_VA** refers to a specific feature within the Actran software, which is a part of the MSC Software suite focused on acoustics and vibroacoustics analysis. The "FFT" stands for Fast Fourier Transform, a mathematical algorithm used to compute the discrete Fourier transform and its inverse, which is essential in analyzing frequency components of signals. **Actran** is typically used for simulating and analyzing noise, vibration, and harshness (NVH) along with structural acoustics. The **FFT_Actran_VA** module essentially allows users to perform advanced vibrational analysis using Fast Fourier Transform techniques, enabling them to analyze how vibrations propagate through structures and affect acoustic performance. In summary, **FFT_Actran_VA** is a specialized module within the Actran software that facilitates detailed frequency analysis, contributing to the assessment and optimization of NVH performance in engineering applications.