In this respect, this camera is awesome - the HPF has removed any sort of ambient noise/hissing, and their voice comes through light years better than my on board mic

There is just too much room echo/ambient noise

Nonetheless, the whir does come up, and I'm not talking about regular ambient noise - an actual frequency interruption

The ambient noise is a constant din that makes conversation challenging.

It always seems hit-or-miss as to how it fits, but it eventually falls into place

but you must be careful with the 20 ft cord as it can break if you don't handle it with TLC