I found out that I was a little to optimistic. A frequence at 10-20 Hz is really or hardly audible. I found an interresting demo at youtube going down from 10000 to 10 Hz:
http://www.youtube.com/watch?v=igGro...eature=related
So the tones I would like to produce with the virus are about between 50-100 Hz. Did someone of you have ever played with deep tones?
Regarding the youtube video, thats exactly the tones I would expect if using sinus wave form. But at low frequencies the virus tone is not smooth like that.
@TIMO
I know you are very deep into the virus. Do you have an idea if I do something wrong or there is a certain technical limit producing deep tones with the virus?