Bill, I’m assuming you mean this sound is present only in a quiet situation and it disappears as soon as sound appears.
Yea, I’m pretty sure it is the soft sound setting. I would describe it as the sound you get when you raise the volume too high on the stereo during a quiet period with no sound input. Perhaps before you start playing the music. I would call it a rushing sound. I first noticed it when I thought there was rain falling on the window next to me but there was none. I can increase the noise by going to the right on the soft sound scale and eliminate it by going to the left. As to it being a swishing sound yes there is some minor variability in the frequency so I suppose it could be described as swishing.
Volusiano, because Genie2 makes instant changes to the aids as you adjust you could try sitting in a quiet space and varying the soft sound from low to high and see if you get the described sound. If not, well maybe there is too much distance between my audiogram and yours.
Bill you can have that setting reduced a notch if the sound is bothersome but remember it is a trade-off. Lower it and you get less in the soft sound range. I found that maxed out to the right I couldn’t put up with the noise but that one notch down was acceptable.