summing

I'm designing a quad-preamp circuit (for an experimental musical instrument). Each pre-amp channel is read by the analog input of a microcontroller before being summed together. The issue is that there is a ton of crosstalk being reported by the microcontroller between the four channels. I'm...

Hello Everyone again, I have a continuation from my previous problem from my adjustments and testing that I was hoping to get help on. I am doing a multi channel mixer that pipes audio signals to different channels to go to different speakers. My previous post have pointed me to fixing the...

Hello Everyone, To add on to my newbness from yesterday, I have one other part of my design that I am not sure what's going on. I have some suspicions but thought you guys probably could spot it pretty quickly or at least probe at me to look at it differently. I have again attached a setup...