I just finished designing an analog 10-band EQ guitar pedal, and it works really well in simulation. I'll be breadboarding it shortly but another idea popped into my head and I can't stop thinking about it. I'd like to try my hand at designing an analog delay pedal, but I'm not sure how to go about it.
My initial idea was to use a variable gain circuit that adds phase shift to the input signal, then sum the original input signal with the phase shifted signal. I'm not sure how I'll make the added phase variable or have multiple taps, but am I on the right track? Would this have the intended result of delaying the input?