What is FFT?

FFT reveals the frequencies hidden within sound and vibration signals, making it one of the most powerful tools for analysing and diagnosing acoustic data.

FFT, or Fast Fourier Transform, is all about understanding the frequencies hidden within a sound or vibration signal. By converting data from the time domain into the frequency domain, FFT allows engineers to identify, analyse, and diagnose specific frequency components that may otherwise go unnoticed.

In this video, we explain:

  • What FFT is and how it works
  • How FFT is used in noise and vibration analysis
  • Why FFT is an essential tool for identifying and interpreting acoustic data

If you’re working with acoustic measurements, vibration analysis, or signal processing, understanding FFT is essential. Want to explore more acoustics and vibration terminology? Visit the AcSoft Knowledge Hub for practical guidance, FAQs, and the full acoustics glossary.