I had never seen this described before, but I have always experimented it with noise such as from air conditioners or plane flights. Especially plane flights, as the noise is so loud. However, I don't hear voices, but music (maybe because I'm a music lover?) And I have learned to control it, so that I can somewhat listen to the music I want (kind of: I can control the melody, but timbre control is very limited, and sometimes I lose melody control too). It keeps me entertained for a while on flights.

A pity the article doesn't really explain the reason. I have always assumed (just as a wild, uninformed guess) that it's because the noise contains a wide selection of frequencies, so if our brain is looking for one for some reason, it can tune the others away and isolate it.