On Fri, Mar 08, 2013 at 10:02:49AM +0000, Ben Bell wrote:
1) Older kernels sound much warmer than newer ones.
2) Kernels compiled by hand on the machine they run on sound less sterile
than upstream distro provided ones which also tend to have flabby low
end response and bad stereo imaging.
3) As if it needed saying, gcc4 is a disaster for sound quality. I mean,
seriously if you want decent audio and you use gcc4 you may as well be
recording with a tin can microphone.
4) Kernels sound better after they've been worn in a bit. Don't expect your
newly built 2.4 kernel to have that warm sound until you've run with it
for a few weeks, but for a really classy sound here's a trick: compile the
kernel and then put it somewhere safe (ext2 partition, obviously) to mellow
for a month and then boot into it at the last minute before you start
recording an important session. Your clients will thank you.
5) Make sure to disable all but one CPU and any hyperthreading.
Parallel processing produces a very nasty form of crosstalk. [1]
Even non-audio data (e.g. network packets) could leak into your
signals if you leave it enabled.
[1] This is why Jack1 usually sounds more transparent than Jack2.
Ciao,
--
FA
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It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)