digital communcation

In an community project, I was assigned to design an FIR filter that eliminate the 60 Hz hum and its harmonics present in a voice signal, without perceptibly degrading the quality or intelligibility of the conversation, while meeting the real-time constraints (latency and computational cost)...

Hey guys, I am trying to diagnose what the issue is with my Kurzweil CUP2 digital Piano The piano displays no sign of life besides a red on led. LCD screen does not display anything Buttons do not seem to do anything(there is a little red light above each button that indicates the "mode" it is...

I stambled on a Matlab solution to calculate the phase by which symbols in the Rx of a 4-QAM have been shifted and therefore do the phase correction. The solution is only custome to Tx'ng and Rx'ng 432 bits, which therefore takes 2bits per symbol. The thing is, i don't understand well how they...