Low Latency vs. Real Time Kernel
by Brian Monroe
I've been spending a lot of time on the #opensourcemusicians channel
talking to Ubuntu Studio users about their kernel and latency times they're
getting. Seems like most of them are using g a stock kernel with the
preemptive option enabled and they are getting great latency results
(2ms)while utilizing the @audio group on their user. I ended up compiling
my own low latency kernel and I haven't had any issues with it yet. If this
is what we are missing for the spin I'd be happy to maintain packaging for
the kernel. I know ccrma has been behind a few kernel releases.
I saw the instructions for adding the real time patch for a tick less
kernel and from what I can tell it wouldn't be hard to get that rolling as
well.
I'm not entirely sure what ccrma does differently with their kernels
compared to other Linux users, and I'm still a bit of a noob so I could be
off base with this, but I would reason that we should be able to just
utilize the same settings to archive similar performance enhancements.
I thought I read that ccrma uses a unique scheduler, but if we could get a
2ms latency time without it, the point may be moot.
9 years, 5 months
Jam On? Help with Getting Started wiki
by Brendan Jones
Hi all,
assuming the wheels don't fall off at the last minute like last time, it
looks like we are good to go.
One thing we are going to need for the spin is a definitive 'Getting
Started' page. Detail is not really appropriate for the spins donwlaod
page, so I have created a skeleton page here [1]. I will request
websites add a link to it in the 'Support' section. PLEASE edit - I
seriously threw this together in 5 minutes from what we already have.
Contributing section is still empty. Disabling desktop effects also has
no link. Feel free to change all the wording etc, it would be awesome if
someone could add some charm ;)
I apologise in advance for not being as active this cycle with the Jam
spin, I've been travelling a lot for work, visited home for a few
months, and as a result I've be poorly keeping up with my packages
updates let alone coordinating this spin.
I'm going out of town again tomorrow, will be around for the launch on
July 2, but then will be disappearing overseas again for a couple of
weeks at the end of that week.
If you really want to help out, join the SIG, I'll sponsor you and at
the very least you'll have access to editing the wikis. No obligation!
For the launch I would have liked a bit more "spin" on the spin, press
etc and what not, but I just haven't had the time. I hoped that the
momentum we built up over GSOC would sustain itself but no. Maybe the
realization of the spin will fire things up.
Anyway, thanks to all who have helped out - really appreciate it.
[1] https://fedoraproject.org/wiki/Fedora_Jam_Audio_Spin
Brendan
10 years, 9 months
amsynth 1.4.0
by Martin Tarenskeen
Hi,
amsynth-1.4.0 has been released upstream
at http://code.google.com/p/amsynth/
I think it's really worth having
this in Fedora. It would probably need to be split in a amsynth,
amsynth-dssi, and lv2-amsynth package. I have been using test versions
from GIT these months, and it's working nicely.
I quote from the NEWS file:
amsynth 1.4.0 -- 2013-06-23
- LV2 support added
- various improvements to sound engine, including:
- mono & legato keyboard modes
- portamento / glide control
- extended OSC 2 detune range
- switchable low-pass / high-pass / band-pass filter modes
- switchable 12 / 24 db/Octave filter slopes
- additional LFO waveforms (sawtooth up & down)
- reduced aliasaing on oscillator's square / pulse waveform
- now ships with substantial library of presets, thanks to
brian(a)amsynth.com
- preset banks are now stored in ~/.amsynth/banks
- numerous other improvements and bug fixes
--
MT
10 years, 10 months
