I'm the (un?)lucky owner of an M-Audio Fast Track Pro USB audio
interface and I'm having some serious problems getting this device to
record audio reliably under Linux.
I've been using arecord and occasionally Audacity for all of my
testing. My problem is this: Recording a take works about 80% of the
time. In the remaining ~20% of cases, the captured audio is extremely
loud with severe digital distortion. Once this problem shows up, it
persists for any subsequent takes. The only way I've found to make
the problem go away, at least temporarily, is to power-cycle the Fast
Track Pro.
I considered the possibility that this particular device might be
defective, but it seems to work wonderfully under Windows.
I'm calling out to other Fast Track Pro users in the hope that someone
out there has encountered the same problem and better still, found a
solution.
Any suggestions at all would be greatly appreciated!
.lewis
Hi.
Quite a shot into the dark, but: Is anyone here by chance into
eurorack modular and has tried the Expert Sleepers ES-8 USB Interface
with Linux yet? It claims to be class compliant, but you never know...
--
CYa,
⡍⠁⠗⠊⠕
Hey hey,
when I recorded something today - after a long time - I noticed masive xruns
during recording, not during playback. I suspected LinuxSampler with the SFZ
engine, but - as far as I could see - it doesn't use much CPU. It's still
getting so bad that I get horrible timing issues. I am recording five stereo
tracks from LS, while four more tracks are playing back. Below you'll find
system/software info. I'd welcome any tip.
Kernel: 4.13.12-1-ARCH (64bit)
CPU: AMD Athlon(tm) II X4 640 Processor (as listed in /proc/cpuinfo)
realTimeConfigQuickScan reports that the system is good, except for no full
preemtion enabled in the kernel.
LinuxSampler: v2.0.0
jackd: v0.125.0 (-R --timeout 4500 -d alsa -C multi_capture -P multi_playback
-r 48000 -p 256 -z shaped)
multi_capture and multi_playback are ALSA devices that couple two MAudio Delta
1010LT cards (linked by S/PDIF clocking)
Internal hard-drive: apparently SAMSUNG HD154UI (as found via /sys)
Best wishes,
Jeanette
--------
* website: http://juliencoder.de - for summer is a state of sound
* SoundCloud: https://soundcloud.com/jeanette_c
No one in this world
Knows me better than you do
So diary I'll confide in you <3
(Britney Spears)
Hi,
Have beat my head against the wall long enough... I have AV Linux,
Hammerfall DSP card, am using Ecasound with ladspa plugins for DSP
crossover, Pianoteq piano model, and Jack to glue things together. I built
2 nice large subwoofers (4 ft3 each) with 12" SBAcoustics drivers. Just
realized the other day that my 5.1 surround sound is missing the .1; the
LFE channel. I want to get it to appear in my PulseAudio sink, map it in
the my Ecasound logic, and split the LFE signal between the 2 subs. Since
I use them for 20 to 80hz, maybe this will sometimes detract from accuracy
of movie music, but still I at least want to learn how to do it and see how
I like it. Problem is, no matter what I do with /etc/pulse/daemon.conf,
default.pa etc. (setting channels=6, channel order, no LFE mixing, etc.), I
can't seem to get the LFE channel to work. I've searched the Internet over
and over, read everything I could find and tried setting things like the
articles say, but still the LFE channel just won't show up. Alsamixer
shows front, rear and center master volume controls only; no LFE.
pulsevumeter, etc., show only 5 channels, nothing shows the LFE channel.
Any idea what I'm doing wrong?
Thanks!!
John
Hi,
I have a Minidisc deck with various digital in- and outputs using
S/PDIF. If you connect another MD deck or a CD player digitally and
record from it, it will faithfully reproduce the titling (not sure about
alphanumeric titles, but at least the starting points of the tracks will
be accurate and reliable and not just based on pauses like when
recording via the analog inputs).
Now how do I get this information when recording an S/PDIF signal into
the computer? Does this information get back out of the ALSA driver (I
can use an RME Multiface here) in some manner? I presume it doesn't
make it through Jack?
Thanks
--
David Kastrup
Hey everyone!
I have created a YouTube channel where I am creating playlists of ambient
music. As many of you have told me that they enjoy listening to "droning"
and other of my ambient creations during work, I have created "Music for
programming" mixes.
Some of them might feature just one tune, some feature several tunes.
Take your pick - and subscribe!
The Ambient Channel
<https://www.youtube.com/channel/UC_niY_HzHQVRtjZLRHNyQfA>
--
Louigi Verona
https://www.patreon.com/droninghttps://louigiverona.com/
James Harkins:
>
> Asking which DAWs are good, especially for mixing, audio editing and
> stability.
>
> I'm not a heavy DAW user. Most of my work is electronic music live
> performance with SuperCollider. Because my usage is rare, I've shied away
> from Bitwig, and even Ardour. I use SuperCollider a lot, and I pay for it
> by answering support questions and contributing. I don't want to pay money
> for something I'll use, oh, maybe 10-15 hours in a whole year.
>
> I've had bad experiences with qtractor crashing.
>
> Never used the non- suite.
>
> I installed Rosegarden at one point, but never kicked the tires for audio.
>
> Did I miss anything?
>
>
I found Ardour a lot more intuitive and easy to use than reaper or audacity
(which I recently compared it against:
https://www.kvraudio.com/forum/viewtopic.php?p=6828874#p6828874)
But of the big ones, you missed muse: http://muse-sequencer.org/
Folks,
it would appear that Mackie puts up the circuit diagrams of a number of
its mixer models up for download. That's something that I very much
appreciate.
Now the EQ section of the Onyx mixers has been designed by Carl Perkins
and is liked by a few people. Since it has to get along with not too
many elements and uses opamps, the actual equations for the various
sections (shelved low-pass, parametric mid pass(es), shelved high-pass)
are comparatively simple and basically amount to comparatively simple
transfer functions yielding themselves reasonably well to bilinear
transforms and consequently low-order IIR filters. There is frequency
warping, of course, but at least for higher sampling frequencies like
96kHz the effect should be reasonably contained since the filters are
shelved and thus the warp at higher frequencies becomes irrelevant. And
it probably makes sense to transform the filters such that the
transition frequencies remain the same in analog and digital filters.
So it should be possible to offer emulations of the various mixers'
channel strips. Bonus task, of course, would be to recover
automation/settings of physical channel strips including EQ by recording
the analog complete mix as well as the pre-fader pre-EQ signals and then
reconstruct from there. But that would be a lot more complex than
providing the digital equivalents of the channel strips including EQ.
Now if one did this, what would be the most defensive way to go about
it, and how would one try getting Mackie to be ok with it? I don't know
if there would be legal repercussions unless one used trademarked terms,
but stuff like providing the circuit diagrams is a great service from
them that I would not want to see stopped.
Obviously, the "recover automation" bit would help a lot since it would
work best if you owned a physical mixer with the exact channel strips
being emulated. Certainly more appealing than "now your Behringer
BCF2000 can be used for producing the same mix digitally as a Mackie
analog mixer, and you get a full automation record in the process".
That would not sound exactly like a driver of enthusiasm.
Of course, an analog mixer beats a DAW in terms of signal delay and
hands-on-ness and reliability, so one could consider the digital version
"training wheels" for "the real thing": if you like the digital version,
you'd quite likely get along with the analog version.
--
David Kastrup
Linux, but not Open Source, u-he's new synth Repro-5 public beta is now
available. I installed it and give it a quick try for now. Sounds
great. Repro-5 is the Sequential Circuit polyphonic Prophet
synth emulation.
From the KVR thread, first page:
https://www.kvraudio.com/forum/viewtopic.php?f=31&t=494717
Cheers.
