Hello, I am a physics undergrad currently applying to grad schools in physics with primary interests in experimental AMO and condensed matter. However, I also have some interest in areas of EE. Specifically, those are the areas of close proximity to condensed matter physics and DSP(digital signal processing) because of my music interests. My question is about DSP. Is that a currently vigorous research branch? Which section of EE studies and researches such things? How feasible is it to go into DSP in grad school without EE undegrad degree? Any help, advice, link, suggestion, etc is appreciated.