Of course you need all of these. Some single chip processor have low or medium resolution AD/DA, but rarely sufficient RAM. Also analog delay chips don't have mind blowing delay times. They are better suited for time base manipulations imvolving short delays, e.g. flangers. But I guess, no new analog delay effects have been designed since 20 years or so.So no need of any memory to provide the time delay? Or ADC and DAC?
Any idea about the maximum delay time and analog bandwidth?I just wanna build something simple.
Most contributors (me to) assumed, that analog delay is referring to an perceptible delay amount, which would mean at least 50 or 100 ms. Practically, it can't be generated by "lag phase shift" (low-pass) circuits with acceptable bandwidth. For time base manipulations in a short time range, e.g for a flanger or frequency modulation (leslie effect), it can work. Effects of the analog age have been often using tunable allpass or lowpass chains for this purpose. Accurate control isn't an issue, but the limited number of stages is.can we try to have some lag phase shift to create the delay?