Merciadri Luca writes: > Note that ~28000 Hz << 48000 Hz. As a result, my sound should not > cause any trouble! 28000 is more than half of 48000. You need at least two samples per cycle. Camaleón wrote: > It might be the sampling frequency. 28000 Hz is quite big, even if we > can hear until 200000 Hz. No you can't. Perhaps to 20000Hz or a bit above if you are small and young. -- John Hasler