dragoncat

Thanks for all the help. I am able to do what I originally wanted to start with, which is to direct the input to the output. I never got the fft output working as expected, perhaps because I don't really know how to control the serial plotter...

That circuit works for me now, as I said. The problem was the capacitors I am using. If I put input into that circuit, the output of the circuit connected to a speaker yields the sound as expected. I now assume that part is ok. However, the input...

Thanks for the tip. So far I'm just using a breadboard. I was using capacitors with "10" printed on them which I had assumed was 10 microfarads, but it seems that was not the case. I replaced those with 2 pairs of 22 microfarad electrolytic...

Thanks for the info. Mine doesn't work like that. In fact, if I connect the conditioning circuit directly to a speaker, I get no sound, whereas if I put the input directy to the speaker, I do. I have carefully checked that I made the circuit as...

Thanks for the info. I have made the conditioning circuit and have connected it to the input. I get a lot of numbers on the screen, but nothing seems to change when a sound signal is directed to the input. Can you please elaborate on how to get...