I'm in my second week of an online DSP class and I'm still kinda lost on some of the concepts of what we are actually doing. I'm hoping you guys can help clear up my understanding. Please forgive me if what I'm asking makes no sense.
I'm reading about continuous time sampling, which I don't think I fully understand yet, and discrete time sampling. But I guess to understand those concepts I really need to understand sampling.
I think sampling is gathering discrete data points from a continuous time signal? But how? How is this physically done? What are we using to get the actual data to convert it into a discrete time sample? Is there a good example I can look at to understand this more?
Right now the text book just shows math formulas, pictures of graphs of sines with various frequencies and amplitudes, and with dots representing discrete time samples vs continuous time samples - but no application of what is actually happening? For example, is an instrument making a consistent sound, that is being captured through some microphone and producing the signal, which is then passed through some system that calculates data points?
Is a continuous time signal just a signal being actively captured and a discrete signal just data points over a certain period of time? How and when do I apply the mathematics we are learning about (as we haven't needed to really do so yet)?