29 Aug
2014
29 Aug
'14
6:57 a.m.
Have just read a bit of Lisalo/LisaloQt, front end for calfbox; what is the status of this
project? Also, are there usage examples for calfbox I can learn from?
--
Jonathan E. Brickman
Ponderworthy Music | jeb@ponderworthy.com<mailto:jeb@ponderworthy.com> |
(785)233-9977 | http://ponderworthy.com
29 Aug
29 Aug
4:24 p.m.
On Fri, 29 Aug 2014, Jonathan E Brickman wrote:
Have just read a bit of Lisalo/LisaloQt, front end for
calfbox; what is the
status of this project? Also, are there usage examples for calfbox I can learn
from?
Please post some urls :) I am thinking Dr Lisa Lo and lisalot and "calf
box" (milk means more) are not what this is about even if google does.
In truth, I did find calfbox on github but the README file gave me no clue
what this does. And the comment by a distro packager that as it was cli he
didn't know either even though he includes it was not enlightening either.
I am thinking something to do with playing samples. I found a comment in
Debian multimedia that says: "calfbox (free alternative for linuxsampler
SFZ sampler, http://repo.or.cz/w/calfbox.git)" Which sounds very
interesting.
--
Len Ovens
www.ovenwerks.net
4:34 p.m.
Greetings, Len. The creator of calfbox suggested I look at this file:
sampler_api_example2.py
which can be seen in the git repo here:
http://repo.or.cz/w/calfbox.git/blob/HEAD:/sampler_api_example2.py
My impression has become, that calfbox is probably a very nice Python
toolkit by which one can build applets to do a number of musical things,
including build a live synth using SFZ instruments. This thought is
analogous to mididings, which is indeed a very nice Python toolkit by
which one can build applets to do a number of MIDI conversions,
combinations, and other renobulations of many sorts. I have not tried
calfbox yet, but do use mididings regularly, and am looking forward to
some careful experimentation; I am trying to build a very dense Strings
instrument for my synth box ( http://lsn.ponderworthy.com ), and
although the 14-item LinuxSynth setup I have right now sounds great for
a second or two of note-hold, one hears increasing spits and pops and
static after more hold even on one note.
Jonathan E. Brickman
Ponderworthy Music | jeb(a)ponderworthy.com | (785)233-9977 |
http://ponderworthy.com <http://ponderworthy.com/>
------ Original Message ------
From: "Len Ovens" <len(a)ovenwerks.net>
To: "Jonathan E Brickman" <jeb(a)ponderworthy.com>
Cc: "linux-audio-user(a)lists.linuxaudio.org"
<linux-audio-user(a)lists.linuxaudio.org>
Sent: 8/29/2014 9:24:00 AM
Subject: Re: [LAU] Status of lisalo/lisaloQt and calfbox?
>On Fri, 29 Aug 2014, Jonathan E Brickman wrote:
>
>> Have just read a bit of Lisalo/LisaloQt, front end for calfbox; what
>>is the
>> status of this project? Also, are there usage examples for calfbox I
>>can learn
>> from?
>
>Please post some urls :) I am thinking Dr Lisa Lo and lisalot and "calf
>box" (milk means more) are not what this is about even if google does.
>
>In truth, I did find calfbox on github but the README file gave me no
>clue
>what this does. And the comment by a distro packager that as it was cli
>he
>didn't know either even though he includes it was not enlightening
>either.
>I am thinking something to do with playing samples. I found a comment
>in
>Debian multimedia that says: "calfbox (free alternative for
>linuxsampler
>SFZ sampler, http://repo.or.cz/w/calfbox.git)" Which sounds very
>interesting.
>
>
>--
>Len Ovens
>www.ovenwerks.net
8:01 p.m.
On Fri, 29 Aug 2014, Jonathan E Brickman wrote:
some careful experimentation; I am trying to build a
very dense Strings
instrument for my synth box ( http://lsn.ponderworthy.com ), and
although the 14-item LinuxSynth setup I have right now sounds great for
a second or two of note-hold, one hears increasing spits and pops and
static after more hold even on one note.
I was surprised that you include X and a wm at all. I would suggest
running screen from dbus-launch could do the same thing so long as all
your applications are CLI. I have set a box up this way and been able to
run pulseaudio, jackdbus and other things (before I ran out of memory on
the old P300). I would not suggest pulse in your case though. There are
some very good CLI tools for keeping track of jack connections.
It is relatively easy using sys v init, upstart or systemd to run a shell
script as a user that would start dbus and screen (or another cli session
manager) with a number of screens open and running some predefined
program. Ssh login to the box and type:
screen -df
will connect you to the already running screen instance running as your
user. I have done this from an android phone, though the text was really
too small :) but a tablet would be better. If you run out of buttons on
your keyboard, USB keyboards (qwerty) are cheap and the controller inside
can be directly connected to stomp switches. Actkbd can assign keypress to
CLI command or with the extension I am working on (it is far enough along
to be useful to you I think) send a jack midi command to your midi
filter/combiner or direct to an app.
There are also a number of MIDI control apps that send MIDI via
ethernet/wireless some of them for android. qmidinet should now be able to
run headless too.
Just a note and you may already know this, you can stack commands with
jack_control. For example I start jackdbus like this:
jack_control ds $DRIVER dps device $DEV dps rate $RATE dps period $FRAME \
dps nperiods $PERIOD start
From a script.
I understand using 96k for this project, but in the case of pops and such
have you tried setting 48k just to see if it goes away? Then setting
period 32 would give the same latency, but may still give cleaner sound.
You can use jack_bufsize to change period on the fly, but note that there
will be audiable artifacts and some applications (rakarrack for example)
never recover and need to be restarted.
--
Len Ovens
www.ovenwerks.net
8:28 p.m.
Greetings, Len, and thanks for writing. Reponses below.
I was surprised that you include X and a wm at all. I would suggest
running screen from dbus-launch could do the same thing so long as all
your applications are CLI. I have set a box up this way and been able
to
run pulseaudio, jackdbus and other things (before I ran out of memory
on
the old P300). I would not suggest pulse in your case though. There are
some very good CLI tools for keeping track of jack connections.
It is a perennial question for me, whether or not to start going CLI.
So far every time I have begun to look there, I have found yet another
tweak I want to do NOW which is very easy in GUI and rather arcane in
CLI. One of the better examples is the use of Calfjackhost, most of my
patches use a single CJH with three plugins (usually EQ, reverb, and
compression), and I haven't found a way to handle that anywhere near as
easily in CLI, and the visualizations help. Similarly I use Yoshimi a
lot, three simultaneous instances in two different patches, and although
I could run it CLI, I could not easily configure it CLI. I have also
thought about setting up two different major modes, CLI and GUI, using
the same patchset items, but it seemed to me like a lot of
time-expenditure and complexity for minimal gain; the current hardware
is not very CPU- or RAM-limited, and it does seem best to use exactly
the same setup in production as on the bench. So I mix, CLI for some
things, GUI when it's just easier. And figuring out Jack connections is
a lot easier in GUI :-) I don't keep qjackctl or one of the newer ones
running all the time, but it sure is nice to have it one click away.
It is relatively easy using sys v init, upstart or systemd to run a
shell
script as a user that would start dbus and screen (or another cli
session
manager) with a number of screens open and running some predefined
program. Ssh login to the box and type:
screen -df
will connect you to the already running screen instance running as your
user. I have done this from an android phone, though the text was
really
too small :) but a tablet would be better. If you run out of buttons on
your keyboard, USB keyboards (qwerty) are cheap and the controller
inside
can be directly connected to stomp switches. Actkbd can assign keypress
to
CLI command or with the extension I am working on (it is far enough
along
to be useful to you I think) send a jack midi command to your midi
filter/combiner or direct to an app.
I have been wondering how much capacity I'm wasting keeping the desktop
manager up. I have a good graphics card so that isn't a limiter, but
obviously there is some motherboard bandwidth being taken. It may be
that I should do something like the Archbang default, which is just
enough.
There are also a number of MIDI control apps that send MIDI via
ethernet/wireless some of them for android. qmidinet should now be able
to
run headless too.
Just a note and you may already know this, you can stack commands with
jack_control. For example I start jackdbus like this:
jack_control ds $DRIVER dps device $DEV dps rate $RATE dps period
$FRAME \
dps nperiods $PERIOD start
From a script.
Wow, I had forgotten about that, although I think I saw it in a doc once
or twice.
I understand using 96k for this project, but in the case of pops and
such
have you tried setting 48k just to see if it goes away? Then setting
period 32 would give the same latency, but may still give cleaner
sound.
You can use jack_bufsize to change period on the fly, but note that
there
will be audiable artifacts and some applications (rakarrack for
example)
never recover and need to be restarted.
--
Len Ovens
www.ovenwerks.net
Aha, did not think of reducing to 48k for just the one patch, that
should work just fine, because I have found that to keep Jack completely
stable I have to kill the process and restart between patches anyhow.
I'll have to keep that one in the bag of tricks!
Jonathan E. Brickman
Ponderworthy Music | jeb(a)ponderworthy.com | (785)233-9977 |
http://ponderworthy.com <http://ponderworthy.com/>
>
30 Aug
30 Aug
9:50 p.m.
Hello Jonathan,
1) there will be never again a program of mine based on Linuxsampler. So
if you hope that I reupload the old CLI lisalo which was for LS: no.
Reason: Linuxsampler has a bad license. don't support it.
2) I took the prototypes based on calfbox down not because I don't want
to work on them anymore but I want to release proper software, not
low-quality, half-done stuff. I still need a sampler myself, but this is
not a trivial piece of software.
3) My current life planning is that I'm done with my thesis in October
and then I choose what to do with my programming time. There are three
options: laborejo 2, the sampler or a commercial screencasting helper/tool.
Everything that involves getting money is quite convincing to me right
now, I have to say.
Nils
http://www.nilsgey.de
On 29.08.2014 06:57, Jonathan E Brickman wrote:
Have just read a bit of Lisalo/LisaloQt, front end for
calfbox; what
is the status of this project? Also, are there usage examples for
calfbox I can learn from?
--
Jonathan E. Brickman
Ponderworthy Music | jeb(a)ponderworthy.com | (785)233-9977 |
http://ponderworthy.com
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Linux-audio-user(a)lists.linuxaudio.org
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31 Aug
31 Aug
4:35 a.m.
Thank you, Nils. Will be keeping my eyes open for your work :-) Am not sure I am up to
implementing even a simple SFZ test with calfbox, it is clearly a very powerful and
flexible component, but am going to try again using its samples.
J.E.B.
On 08/30/2014 02:50 PM, Nils wrote:
Hello Jonathan,
1) there will be never again a program of mine based on Linuxsampler. So if you hope that
I reupload the old CLI lisalo which was for LS: no. Reason: Linuxsampler has a bad
license. don't support it.
2) I took the prototypes based on calfbox down not because I don't want to work on
them anymore but I want to release proper software, not low-quality, half-done stuff. I
still need a sampler myself, but this is not a trivial piece of software.
3) My current life planning is that I'm done with my thesis in October and then I
choose what to do with my programming time. There are three options: laborejo 2, the
sampler or a commercial screencasting helper/tool.
Everything that involves getting money is quite convincing to me right now, I have to
say.
Nils
http://www.nilsgey.de
On 29.08.2014 06:57, Jonathan E Brickman wrote:
Have just read a bit of Lisalo/LisaloQt, front end for calfbox; what is the status of this
project? Also, are there usage examples for calfbox I can learn from?
--
Jonathan E. Brickman
Ponderworthy Music | jeb@ponderworthy.com<mailto:jeb@ponderworthy.com> |
(785)233-9977 | http://ponderworthy.com
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Linux-audio-user mailing list
Linux-audio-user@lists.linuxaudio.org<mailto:Linux-audio-user@lists.linuxaudio.org>
http://lists.linuxaudio.org/listinfo/linux-audio-user
--
Jonathan E. Brickman
Ponderworthy Music | jeb@ponderworthy.com<mailto:jeb@ponderworthy.com> |
(785)233-9977 | http://ponderworthy.com
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