# wave generator
for Hz = 500 to 6000 step 500
sound{Hz,500}
print Hz
next Hz
end

This little program generates beeps UP to 3500 Hz but then beeps DOWN from 3500 to 6000 Hz...
Can somebody explain how that works?
Platform: Ubuntu14, Basic256 version 1.1.2.3 (2014-05-13) - built with QT 5.2.1

I'm suffering of Tinnitus at 7400 Hz left 50dB and right 60dB. I want to check if the frequency still the same. I've now the impression that are extra fequencies too because I hear sissing noice above 7400 Hz.

But the generator goes not higher as 3500 Hz!

--
it must be possible...