Lecture
This lecture covers the classification of signals in frequency domains, focusing on lowpass, highpass, and bandpass signals. It delves into sinusoidal modulation, discussing the DTFT of modulated signals and the importance of carrier frequencies. Applications of sinusoidal modulation in voice, music, and radio channels are explored, along with demodulation techniques. The lecture emphasizes the careful consideration of modulation frequencies and provides insights into demodulation in the frequency domain.