Lecture
This lecture covers the sampling of a pure sinusoid, discussing the conditions required to reconstruct the sinusoid from its samples. It explains the relationship between the sampling frequency and the signal frequency, emphasizing the importance of the Nyquist theorem. The lecture also explores the implications of undersampling, using examples to illustrate the consequences of violating the Nyquist criterion. Additionally, it delves into practical applications of sampling in audio technology, such as the sampling rate used in CDs. The theoretical foundations of sampling are presented, highlighting the general applicability of the Nyquist theorem to various types of signals beyond sinusoids.