Explore the relationship of signals in the time and frequency domain. Adjust time parameters and see how the spectrum changes! Take a look at selected Fourier transform pairs of waveforms and pulses.
FFT spectrum analyzer
Control the settings of an FFT spectrum analyzer and get familiar with measurements in the frequency domain. Sampling time and capture time determine the spectrum's highest available frequency and resolution bandwidth.
Fast Fourier transform (FFT) illustrated
Calculate the FFT of signals. The FFT takes a time-discrete signal and computes the spectrum. Examples of time and frequency signals are shown, DC component, Dirac pulse, cosine, pulse, complex rotating phasor.
Inverse Fast Fourier transform (IFFT)
Calculate the Inverse Fourier Transform (IFFT). Enter a frequency-based signal and transform it to a time-based Signal.