25 Dec
2010
25 Dec
'10
12:47 p.m.
Em Fri, 24 Dec 2010 17:07:48 +0000
Q <lists(a)quirq.ukfsn.org> escreveu:
Out of interest, how high can intersample peaks get
above the highest
peaks in a file?
here mix to max. -1,0 dBFS is recommended:
1. Leave lots of headroom in your mix: This is the
obvious solution,
and it requires no special processing. As long as you keep the peak
levels in your mix below 0dBFS, the DAC will never encounter the
situation described above. The consensus I’ve found is that real-world
inter sample peaks never exceed 1dB, so keep your levels below -1.0
dBFS and you’ll be fine.
from: http://www.hometracked.com/2007/11/08/prevent-intersample-peaks/
2. Use a mastering tool designed to prevent these
peaks: iZotope’s
Ozone is one such tool. The loudness maximizer has a one-click option
to prevent inter-sample clipping.
3. Use a metering tool that highlights the peaks: SSL recently
released the X-ISM Plug-In which adds an inter-sample peak meter to
any VST-capable DAW.
wondering if any of those tools in 2. or 3. are available for linux!?
here it is shown that intersample peaks can eventualy/teoriticly exceed
10db!!!:
If you want to see something really bad on the
oversampled meter -
try a sequence of maximum and minimum values that goes like this:
"1010101101010" - notice that the alternating 1's and 0's suddenly
change direction in the middle. The results depends on the filter
being used in the reconstruction, with the intersample peak easily
exceeding 10dB!
from:
http://www.gearslutz.com/board/tips-techniques/334385-intersample-peaks.html