Howtosignalprocessing
- What is the relation between time domain and frequency domain?
- What is power in frequency domain?
- What is time and frequency domain representation?
What is the relation between time domain and frequency domain?
Parseval's theorem gives the relationship between the squared integral of a time function and that of its Fourier transform, namely, the energy in the time domain is equal to the energy in the frequency domain.
What is power in frequency domain?
The PSD describes how the power of a time signal is distributed with frequency, it has units of watts/Hz. You compute the power spectrum by integrating each point of the PSD over the frequency interval at which that point is defined (i.e. over the resolution bandwidth of the PSD).
What is time and frequency domain representation?
Time domain representation – In frequency domain, a signal is represented by its frequency spectrum. To obtain frequency spectrum of a signal, Fourier series and Fourier transformation are used. Fourier series is used to get frequency spectrum of time-domain signal, when the signal is periodic function of time.
