Time series Processing, Sequence Processing
Signal is vector when you recognize both are just series of numbers
인지하고 가야할 건 익숙한 함수는 값이 input, 시그널 프로세싱은 signal 혹은 동등한 함수가 input
There are several layers like system layer, FT layer, LTI layer. You need to distinguish them.
Signal Processing Notion
Signal Processing Usages