How to Reduce white noise in background

We are noticing significant white noise in background during jitsi calls. On comparing the voice with zoom, there wasn’t any, at least not noticable. We noticed they had lower audio levels than jitsi even on max volume. Maybe that is why the white noise is getting amplified in jitsi.
So, is there any way we can reduce the audio level or gain via configurations. We have disableAGC set to true, helped us reduce the noise quite a bit