17 Jan
2011
17 Jan
'11
11:09 p.m.
On Mon, 17 Jan 2011 12:41:07 +0200
Moshe Werner <moshwe(a)gmail.com> wrote:
Hi renato,
only saw the question now, so sorry for the late reply.
The input voltage of soundcards depends on the headroom of the AD of
your soundcard. (e.g. Dynamic Range).
Pro and semi-pro cards often have a line level of +4dBu (1.227V RMS,
3.472V Peak) plus a bit headroom.
Hope this helps.
Moshe
Yes, thanks. I might just try sticking in my USB function generator and
go up with voltage untill the sound card clips...
Also, I realized that putting a zener diode in parallel will just clip
the signal at the diode voltage, so it won't solve the problem.
A simple resistor in series with the piezo (of appropriate value)
should work, shouldn't it?
renato