1- or 2-channel FFT

• Signal: white noise:

• • Amplitude spectrum: DC=0, the rest=1
  • Phase spectrum: random (equal distributed)
  • Signal: random, gaussian distribution
  • Crest factor:
  • • Example: fs=48kHz, T=1.5s
    • 72000 samples

• Averaging necessary

• 1-channel-FFT: the amplitude spectrum only

• 2-channel-FFT: the complex transfer function