Hello,
u-he is offering their synths for the Linux platform. Not many are
doing so. Not at all.
Repro-1 is an emulation of the Sequential Circuit Pro-One. The video
presentation was posted a few hours ago:
https://www.youtube.com/watch?v=vhQST401uYM
Cheers.
Greetings,
Long-time Linux user, and relatively new JACK user here. I have built
some audio workstations for the community radio station where I
volunteer (WDRT, Viroqua, WI, US). I recently switched one of the
workstations to use JACK, along with PulseAudio. We use Audacity to edit
audio and we have noticed that the "left" and "right" channels are out
of sync with each other. We have witnessed the "skew" to be as few as
two samples (which is unnoticeable to the ear) to as many as a couple
hundred samples (which sounds a lot like a phase error).
We performed a lot of troubleshooting, including swapping PCI audio
cards (ESI Juli@, Digigram VX222), disabling JACK, running Audacity on
the same hardware booted from a USB stick and a completely different
Debian environment. I am not *completely* confident, but the likely
culprit seems to be JACK.
We have recorded audio using jack-record and experienced the same
left-right channel skew.
Can anyone help point to JACK or OS configuration parameters that we
might look at to get our left and right channels in sync?
Details:
OS: Debian Jessie (8.6), up to date (kernel: 3.16.0-4-amd64 #1 SMP
Debian 3.16.36-1+deb8u2 (2016-10-19) x86_64 GNU/Linux)
JACK (jackd2): 1.9.10+20140719git3eb0ae6a~df
PulseAudio: 5.0-13
ALSA: 1.0.27+1
CPU: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz
RAM: 8GB
Audio Cards: ESI Juli@ PCI, Digigram VX222HR PCI
Thanks for your consideration!
~David Klann
Hello, again!
Another Computer - another problem. :)
Seems like my HDSP is no longer catched by rtirq-init. At least htop
doesn't list this card in the "priority-view". And I get a lot of
xruns... Wonder, if this has sth to do with systemd?
Using Debian Testing with KXstudio-overlay.
There was a handy tool to list the priority of Interrupts (and devices)
but I can't find it anymore and I forgot it's name. (Sth like
"rtprio"?)
Or is using rtirq-init the old way and I should use rtkit instead? If
yes, how?
Greets!
Mitsch
Hi.
The monthly meeting will take place (i.e. at least I will go there and
try to gather some audio geeks) at c-base on Wednesday.
I hope I will see some people there.
Cheers
/Daniel
Hmm, I use Debian Testing, with JACK and a USB sound card (for both recording and playback) also using Audacity and jack-record. I don't have Pulseaudio installed at all. And I've never had left-right channels out of sync by even two samples.
Don't know what's going on with your setup. Perhaps try booting the machine from an audio-oriented distro like Musix 3, KXStudio, or ArtistX and see if you have same problem?
David W. Jones
gnome(a)hawaii.rr.com
authenticity, honesty, community
http://dancingtreefrog.comOn Dec 3, 2016 13:59, Paul Davis <paul(a)linuxaudiosystems.com> wrote:
>
> There's more or less no way for JACK to do this. Its entire design is "be woken by hardware to process N samples; process N samples; go to sleep". It is a synchronous low latency design that does not offer scope for processing different channels or different outputs at different times.
>
> On Sat, Dec 3, 2016 at 7:20 PM, David Klann <dxklann(a)gmail.com> wrote:
>>
>> Greetings,
>>
>> Long-time Linux user, and relatively new JACK user here. I have built
>> some audio workstations for the community radio station where I
>> volunteer (WDRT, Viroqua, WI, US). I recently switched one of the
>> workstations to use JACK, along with PulseAudio. We use Audacity to edit
>> audio and we have noticed that the "left" and "right" channels are out
>> of sync with each other. We have witnessed the "skew" to be as few as
>> two samples (which is unnoticeable to the ear) to as many as a couple
>> hundred samples (which sounds a lot like a phase error).
>>
>> We performed a lot of troubleshooting, including swapping PCI audio
>> cards (ESI Juli@, Digigram VX222), disabling JACK, running Audacity on
>> the same hardware booted from a USB stick and a completely different
>> Debian environment. I am not *completely* confident, but the likely
>> culprit seems to be JACK.
>>
>> We have recorded audio using jack-record and experienced the same
>> left-right channel skew.
>>
>> Can anyone help point to JACK or OS configuration parameters that we
>> might look at to get our left and right channels in sync?
>>
>> Details:
>>
>> OS: Debian Jessie (8.6), up to date (kernel: 3.16.0-4-amd64 #1 SMP
>> Debian 3.16.36-1+deb8u2 (2016-10-19) x86_64 GNU/Linux)
>> JACK (jackd2): 1.9.10+20140719git3eb0ae6a~df
>> PulseAudio: 5.0-13
>> ALSA: 1.0.27+1
>> CPU: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz
>> RAM: 8GB
>> Audio Cards: ESI Juli@ PCI, Digigram VX222HR PCI
>>
>> Thanks for your consideration!
>>
>> ~David Klann
>>
>>
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user(a)lists.linuxaudio.org
>> http://lists.linuxaudio.org/listinfo/linux-audio-user
>>
>
Howdy,
In contrast to the last few pieces, Aquaterra is rather laid
back. It's a smooth travel from water to land and back to water. The
sonic 'waves' could be representing water waves or perhaps whales.
This one brings back acoustic guitar in the sonic palette. Since we
know an autistic child who likes whales a lot, the solo with its
'stuck notes' that are evolving takes a new dimension.
https://soundcloud.com/nominal6/aquaterra
There is also a remix of a previous piece, that makes it perhaps a bit
more even:
https://soundcloud.com/nominal6/jumanmai
Comments are welcomed !
Cheers.
Howdy,
The title for this one is from one of the presets included in the new
Repro-1 synth. There is no political statement but if you insist...
there might be a general statement about the blah-blah talk with the
piece ending appropriately with an ACE synth sound called 'In the
Oubliette', in the dungeon if you wish :) This said, I do not favor any
of the - for all practical purposes - only two candidates.
Comments welcomed !
https://soundcloud.com/nominal6/softtrump
Cheers.
Anyone on the list know how to persuade an Arduino to look like a MIDI
device?
I've got it generating MIDI signals via a MIDI breakout unit, but want
to connect direct
to my PC using the USB. I've got it sending what appear to be valid MIDI
messages to
/dev/ttyUSB1, but qjackctl doesn't see it as a midi device so it can't
connect it.
Any useful information would be welcome.
Thanks in advance
Bill
--
+----------------------------------------+
| Bill Purvis |
| email: bill(a)billp.org |
+----------------------------------------+
Hi.
Something me and my friend (who dropped by to cheer me up) made this
afternoon using Bitwig on Ubuntu. It's David on guitar:
https://soundcloud.com/excds/regularberlinmonday
Comments?
Cheers.
/Daniel
On Nov 30, 2016 15:01, Len Ovens <len(a)ovenwerks.net> wrote:
>
> On Wed, 30 Nov 2016, David Jones wrote:
>
> > On Nov 30, 2016 10:17, Len Ovens <len(a)ovenwerks.net> wrote:
> >>
> >> > termtech <termtech(a)rogers.com> wrote:
> >> >
> >> >> Fascinating! ANY one or two of the cores are OK,
> >> >> yet ANY three or all four of them causes the noises.
> >> >
> >> > Don't know what CPU you have, but sounds like SMT (hyperthreading isn't
> >> > working well for you?
> >>
> >> His 4 core i5 doesn't have ht... (according to the intel web site)
> >
> > My i7 doesn't have the problem, either. Makes me wonder if OP's i5 chip
> > or one of the supporting chips on the motherboard has a defect?
>
> Or an engineering mistake, low latency and PCI performance is not exactly
> top priority in todays computer world.
>
> I have an i5 (4 core no ht) and a D66, which is the same ice1712 to the
> PCI bus as the OP. No problems. I have an azus MB which I chose for
> maximum number of PCI slots (3) so I had as much choice of slot as I could
> get. I chose minimum on board bells and whistles because those are just
> more to get in the way of my audio. Intel video (on chip) and even ps2
> mouse and keyboard. (I have an old mechanical KB that has a switch for "at
> or xt" to show how old it is). While I don't use a USB Audio Interface, I
> don't like USB mice if I can avoid them... I have found USB interrupts
> troublesome in the past. The only USB device I have is a scanner which is
> turned off when not used, plus the odd USB mem stick and a second keyboard
> I use with midikb as a controller sometimes for testing. Audio is not plug
> and play really on a PC (win or linux) if you want low latency it needs
> exrta work. Linux at least gives one the tools to do that.
Agreed. Pro audio work (Win or Linux - don't now about MacOS) is such a tiny fraction of total PC use, so I don't think PC makers consider it at all. Even a friend who pursued a music career using Windows systems set up and supplied by experts at Sweetwater never got reliable RT audio performance. (He's now considering a Mac and Pro Tools.)
David W. Jones
gnome(a)hawaii.rr.com
authenticity, honesty, community
http://dancingtreefrog.com
