-------- Forwarded Message --------
From: Ralf Mardorf
To: qtractor-devel
Subject: [Qtractor-devel] ;) Was - Re: [LAU] Session management with NSM
Date: Thu, 04 Sep 2014 20:49:23 +0200
Mailer: Evolution 3.12.5
Rui :)
please consider to automatically add to
File > Properties ... > Description
the jackd "in" and "out" reported latency ;). Since the MIDI resolution
steps don't provide ms, frame information, a written note could help to
fix sync problems, without using a calculator.
(I don't need it, perhaps you could add an option to the preferences, to
uncheck this feature ;)
Regards,
Ralf
Dear List,
I have a strange and unreproducable error on my laptop, that halts the
entire audio system randomly about once every three weeks.
Jackd quits, with it all clients, and dmesg says:
[21684.947293] irq 19: nobody cared (try booting with the "irqpoll"option)
[21684.947303] Pid: 194, comm: irq/19-ehci_hcd Not tainted 3.2.0-4-rt-amd64 #1 Debian 3.2.54-2
[21684.947309] Call Trace:
[21684.947327] [<ffffffff81098889>] ? __report_bad_irq+0x2c/0xb5
[21684.947336] [<ffffffff81098c6d>] ? note_interrupt+0x16f/0x1f2
[21684.947344] [<ffffffff81097969>] ? irq_thread_fn+0x32/0x32
[21684.947351] [<ffffffff81097969>] ? irq_thread_fn+0x32/0x32
[21684.947358] [<ffffffff8109783c>] ? irq_thread+0x106/0x201
[21684.947367] [<ffffffff81097736>] ? irq_finalize_oneshot+0xb3/0xb3
[21684.947378] [<ffffffff81062ee4>] ? kthread+0x78/0x80
[21684.947385] [<ffffffff8103f2fa>] ? get_parent_ip+0x9/0x1b
[21684.947395] [<ffffffff8136a0f4>] ? kernel_thread_helper+0x4/0x10
[21684.947405] [<ffffffff81062e6c>] ? rcu_read_unlock_sched_notrace+0x2a/0x2a
[21684.947412] [<ffffffff8136a0f0>] ? gs_change+0x13/0x13
[21684.947417] handlers:
[21684.947429] [<ffffffff81096e34>] irq_default_primary_handler threaded [<ffffffffa003d483>] usb_hcd_irq
[21684.947473] [<ffffffff81096e34>] irq_default_primary_handler threaded [<ffffffffa025a85a>] ips_irq_handler
[21684.947485] [<ffffffff81096e34>] irq_default_primary_handler threaded [<ffffffffa04d62cd>] snd_hdsp_interrupt
[21684.947498] Disabling IRQ #19
The sound card is an RME Multiface via an ExpressCard in a Thinkpad
X201s. The card itself had been working reliably since more than ten
years by now (not with the ExpressCard though). Running on Debian RT
Kernel.
I have no way to set/change the IRQ assignments in this BIOS.
Interrupt 19 is shared by modules ehci_hcd:usb2, ips, snd_hdsp,
where the two others are USB and the thermal subsystem.
I assume ehci_hcd:usb2 denotes the second USB bus. If this is correct,
there are no devices connected to it at the moment, according to lsusb
(except for USB hubs).
Web research has shown that people suggest using the kernel option
"irqpoll" or disable "threadirqs", use "noirqdebug" or "irqdebug" options
(apparently quite expensive in computation), or the irqbalance
package.
https://bbs.archlinux.org/viewtopic.php?id=133327 gives a hint about
deinstalling laptop-mode-tools, which I am running, and which made the
problem go away for the poster.
As the error occurs so infrequently, I can not yet verify if any of
these help, and am hoping for some hints or experience from this list.
Please, any help or ideas are desperately needed, as this is a
production system that is used in live shows in front of large
audiences, and I absolutely need to resolve that error.
Thank you for all ideas,
best, Peter
Dear Community,
I was wondering if anyone had suggestions for audio interfaces that
could be venerable successors to an RME HDSP+Multiface. I am using
mine since over ten years, and hence prefer to stick to laptops with
ExpressCard slots, but am curious in general if this is still one of
the few pro mobile interface for Linux users.
The following features would be required:
-Operation on laptops, either through PCMCIA, ExpressCard, USB, Firewire
-Stable low-latency operation under Linux
-16-18 channels of I/O each, eg half of them analogue, the others digital.
thank you for any hints!
best, Peter
I am fascinated by Carla's ability to call ZASFX. How could this be implemented for Yoshimi? Are there config files of some sort?
--
Jonathan E. Brickman
Ponderworthy Music | jeb(a)ponderworthy.com<mailto:jeb@ponderworthy.com> | (785)233-9977 | http://ponderworthy.com
I have a huge number (about 2400) of 0.5GB WAV files from live 24
track recordings. 10-40% of the tracks on some recording sets
are not needed, an unused vocal mic stashed off stage. I have
been using the RMS function in SOX by command line to help me
determine which files are not useful. A low RMS level tends to
indicate less usable signal.
But, this doesn't always work. For instance, it can miss that
great minute long harmonica solo during the hour long show.
Peak levels don't help, because frequently a drummer will slam
something loudly enough to falsely mark the file as useful, when
it's actually not.
Looking at the audio waveform with Ardour or Audacity seems
foolproof. But, it's also way too much work to use a GUI
application on that many files.
I would like to run a script or program on the set of files and
produce something like an Audacity or Ardour waveform graphic to
be stored in a PNG (or similar) associated file. Does anyone
know of something close to out-of-the-box ready to do this?
I did find these possibly helpful links.
http://www.network-theory.co.uk/docs/octave3/octave_263.htmlhttps://wiki.ubuntu.com/Waveform_Viewers-Plotting_Large_Analog_Data
Thanks...
--
Kevin
Hi all,
all the recent talk about less audio interfaces being supported for Linux
got me thinking.
First I want to mention that I'm neither a programmer nor an electrical
engineer, but what if we could develop our own AI?
We could start a Kickstarter project for the first open source AI.
I am sure many people would invest in the possibility of having a real
Linux natively supported high quality AI.
I imagine a modular approach with options to customize and add different
features like building blocks.
One user needs a lot of preamps, the other works mostly over ADAT or Madi...
We could even implement a DSP chip with LV2 effects to lessen the CPU load.
The possibilities are endless and I believe that it would broaden the
community instanly.
Maybe this is just wishful thinking, but it would solve one of the biggest
problems for Linux audio musicians.
Cheers
Moshe
Hi all,
Yoshimi seems be able to autoconnect to a MIDI input device (e.g. a
keyboard) using its --alsa-midi (short form -a) option. But I can't seem to
get it to work. I'm not sure what string I should pass to identify
For example, running:
yoshimi --alsa-midi="microKONTROL MIDI 1"
(i.e. using the name which aconnect -o gives for the device) gives the
error:
ALSA lib seq.c:935:(snd_seq_open_noupdate) Unknown SEQ microKONTROL MIDI 1
Error, failed to open alsa midi device: microKONTROL MIDI 1
Any ideas how I should identify my keyboard? (OR does this feature simply
not work at the moment?)
Thanks!
J
I'd like to tell Claudia to load a specific studio and/or room at
startup; are command-line options (or OSC/MIDI/other methods) to do this
automatically?
--
Jonathan E. Brickman
Ponderworthy Music | jeb(a)ponderworthy.com | (785)233-9977 |
http://ponderworthy.com
Hi guys. I know I did this before ... but for some reason I can't get
timidity to play on my laptop to an external USB device. Works fine using
the internal speakers.
I can play audio to the USB. No problems there.
But, timidity just won't play nice. No errors (of course). And no sound
either.
I've noticed that the timidity daemon gets launched at boot, and I have
killed that ... no changes. I'm going to work on this some more tomorrow
(after i get a good sleep), but the first thing I'm doing is to kill the
daemon.
This is being controlled by pulse, but that should help :)
I need to get this working in the next few days for a little gig and I
don't want to rely on the internal speakers going to an amp!
Thanks.
--
**** Listen to my FREE CD at http://www.mellowood.ca/music/cedars ****
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bob(a)mellowood.ca
WWW: http://www.mellowood.ca
In the next couple of days I should be getting a new fanless dual core machine
with a 64bit intel cpu running at 3.1G. This is really intended to replace my
ageing 'office' machine, but I thought I might as well set it up for decent
audio too.
As this will be a clean install, I'm wondering what people might suggest as
for best distro to make full use of it - all my other machines have had a
progression of debian upgrades so are probably full of crud.
--
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.
