I am really struggling with this. What can I do soldering wise? what can I buy? I really need to know how to improve the microphone sound input to my PC. I would like to eliminate the hiss/noise.
My last effort is an external USB soundcard. It's not bad sounding like a USB headset microphone I tried once before which produced lots of hum, but it doesn't seem to be an improvement.
I have also tried some microphones that have adapters in between the microphone and the soundcard input, apparently to help boost/correct the bias voltage on the microphone element. It seems to remove some hiss, but it seems to increase low frequency hum.
I tried hooking up a digital voice recorder to the line input and it sounds better than direct input through my microphone. Any suggestions for an inexpensive retail microphone preamp? A low noise headset microphone? The circumstance requires the input to be from a headset microphone to help maintain consistent volume.
Thank you.