I am trying to record vocals using a Tenlamp G3 soundcard with the Tenlamp L9 microphone. After singing a long note, the input will suddenly drop out after a second or two. It won’t fix itself until the note or sound changes, even if I change my voice’s volume. I’ve confirmed it’s not an issue with my microphone, as it happens with my laptop’s built-in microphone as well. I’ve made sure my sound card drivers are up to date, and I’ve fixed the latency, but I’m not sure what else I can do.
It’s a good bet you have automatic noise reduction running somewhere. It seeks sustained sounds, assumes they are “noise” and filters them out. This could come from Windows Enhancements or another application such as Skype or Zoom.
Check in Windows Control Panels for Sound and make sure there are no tools or filters running. Clean Shutdown Windows and Start with no other applications running.