26 Apr
2011
26 Apr
'11
10:55 p.m.
On 26/04/11 21:52, Harry Van Haaren wrote:
On Tue, Apr 26, 2011 at 9:36 PM, andy baxter
<andy(a)earthsong.free-online.co.uk
<mailto:andy@earthsong.free-online.co.uk>> wrote:
I have a signal from a Supercollider program which goes into jack.
I want to adjust the signal level so it's as loud as possible
without clipping. Could someone tell me what is the loudest sound
that doesn't get clipped in dB, as measured by ardour or
meterbridge for example?
To be nasty, 0dBFS... but that's not the answer you're looking for.
JACK's audio is floating-point between -1 -> 1.
Hence outputting all 0's is silence. If you scale your output to be
between -1, 1 then you've got what you want.
Note that inter-sample peaks in high frequencies will still go beyond
your DAC's range, so there might be clipping in hardware... but I'm
not too certain in that field.
Cheers, -Harry
OK. I was aiming for about that, but I noticed that ardour's peak level
meters go into positive decibels as well.
thanks,
andy