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I've heard that signal processing is fundamental field that can be applied to many other fields (MRI, EEG, audio, speech recognition, communication even to economics)
So, I want to contribute myself to studying this field deeply.
I already took Signals and systems and DSP, and also in this semester, I'm taking Statistical Signal Processing.
This may be stupid question But, I cannot form any idea of how I can improve and study signal processing. Taking a theoretical theory is not enough to get the concept. And even if I learned some basics, I still don't know what signal processing is in general. Constructing a filter or classifier is main goal of signal processing?
Could you share the general insight and recommend the method I can follow?