Taajuusdomeeni
Taajuusdomeeni refers to the representation of a signal or function in terms of its frequency components. Instead of plotting the signal's amplitude against time, as in the time domain, in the frequency domain, the amplitude or power of each frequency present in the signal is plotted against the frequency itself. This transformation is often achieved using the Fourier Transform or its discrete version, the Discrete Fourier Transform (DFT), and its efficient implementation, the Fast Fourier Transform (FFT).
The frequency domain provides a different perspective on signals, revealing characteristics that might be obscured in