Hi, my friend and I had tried combining lavalier mic and funnel as DIY stethoscope connecting to phone for telemedicine. During a video call, the heartbeat can be clearly heard from the headset but not the lung sound. I think if the signal from lavalier mic can be amplified it would lead to...
I'm trying to sim the input circuit of an audio EQ, but I'm getting only DC at the output.
This is what I'm trying to simulate:
It's the input section of this schematic:
Here's what I've created, the .ASC is attached:
I'm using an LT1057 model as it is described as a drop-in...