12 Jan
2008
12 Jan
'08
3:03 p.m.
ciao/hello
i use some applications on pc with a updated debian unstable to make
some beautiful electronic (:-)) music. i don't have external midi
controller or some instruments, i only use my pc. i have a creative
audigy es.
1) what configuration can i use in jack for best performance?
now i use this command line:
/usr/bin/jackd -v -R -P70 -dalsa -dhw:0 -r48000 -p256 -n2 -P -s -zt
with a latency of 10.7 ms; is it important latency in my case?
2) when i use vsthost with wineasio and some vsts i have some xruns
and i can hear some poppings? is it a normal problem?
3) as midi arpeggiator i try to use qmidiarp (gpl but old, it is a dead
project?) and hypercyclic (freeware, new and very good) but i can figure
out how can use these softwares? precisely i don't know how link these
programs with jack.
excuse for my english.
thanks in advice.
Luigi
--
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
Io sono
lo sbaglio, il momento di confusione, l'inopportuno
Non sono niente.
Non sarò mai niente.
Non posso volere d'essere niente.
A parte questo, ho in me tutti i sogni del mondo.
F. Pessoa
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
12 Jan
12 Jan
5:11 p.m.
New subject: Some Problems/Questions (about jack , qmidiarp and maybe other)
On Sat, 2008-01-12 at 19:58 +0100, luigi curzi wrote:
ciao/hello
i use some applications on pc with a updated debian unstable to make
some beautiful electronic (:-)) music. i don't have external midi
controller or some instruments, i only use my pc. i have a creative
audigy es.
1) what configuration can i use in jack for best performance?
now i use this command line:
/usr/bin/jackd -v -R -P70 -dalsa -dhw:0 -r48000 -p256 -n2 -P -s -zt
with a latency of 10.7 ms; is it important latency in my case?
2) when i use vsthost with wineasio and some vsts i have some xruns
and i can hear some poppings? is it a normal problem?
The basic idea is that if you're hearings pops (xruns) either you need
to run jack with a higher latency, or you need to look at an rt (real
time) kernel.
Low latency is necessary if you are using a midi controller to drive a
synth on the PC, or if you are recording and you need to do software
monitoring.
3) as midi arpeggiator i try to use qmidiarp (gpl but
old, it is a dead
project?) and hypercyclic (freeware, new and very good) but i can figure
out how can use these softwares? precisely i don't know how link these
programs with jack.
For an audio program to support jack, the programmers need to use the
jack api. Or if the programs support alsa but not jack, there is an
alsa-jack plugin (or whatever it's called).
bye
John
13 Jan
13 Jan
12:23 a.m.
New subject: Some Problems/Questions (about jack , qmidiarp and maybe other)
ciao
Il giorno Sat, 12 Jan 2008 21:10:56 +0000
John Anderson <ardour(a)semiosix.com> ha scritto:
qmidiarp has jack support but i don't know how use it to connect this
application with a sofsynt (for example);
there are some other new (and maybe gpl) arpeggiator?
On Sat, 2008-01-12 at 19:58 +0100, luigi curzi wrote:
with software monitoring do you mean the recording from software
sources?
i have a realtime kernel: 2.6.24-rc5 with realtime patch;
i have 1 gigabyte ram with a pentium 4 (2.66 gigahertz, no ht) system
and an audigy es soundcard;
in my /etc/security/limits.conf i have:
@audio - nice -19
@audio - rtprio 95
@audio - memlock 512000
and i use this script when system starts:
chrt -v -f -p 80 `pgrep softirq-timer`
chrt -v -f -p 80 `pgrep softirq-hrtimer`
chrt -v -f -p 82 `pgrep IRQ-21` --> my soundcard's irq
chrt -v -f -p 98 `pgrep IRQ-8` --> rtc's irq
chrt -v -f -p 70 `pidof "jackd"`
something wrong?
ciao/hello
i use some applications on pc with a updated debian unstable to
make some beautiful electronic (:-)) music. i don't have external
midi controller or some instruments, i only use my pc. i have a
creative audigy es.
1) what configuration can i use in jack for best performance?
now i use this command line:
/usr/bin/jackd -v -R -P70 -dalsa -dhw:0 -r48000 -p256 -n2 -P -s -zt
with a latency of 10.7 ms; is it important latency in my case?
2) when i use vsthost with wineasio and some vsts i have some xruns
and i can hear some poppings? is it a normal problem?
The basic idea is that if you're hearings pops (xruns) either you need
to run jack with a higher latency, or you need to look at an rt (real
time) kernel.
Low latency is necessary if you are using a midi controller to drive a
synth on the PC, or if you are recording and you need to do software
monitoring.
3) as midi
arpeggiator i try to use qmidiarp (gpl but old, it is a
dead project?) and hypercyclic (freeware, new and very good) but i
can figure out how can use these softwares? precisely i don't know
how link these programs with jack.
For an audio program to support jack, the programmers need to use the
jack api. Or if the programs support alsa but not jack, there is an
alsa-jack plugin (or whatever it's called).
bye
John
Luigi
--
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
Io sono
lo sbaglio, il momento di confusione, l'inopportuno
Non sono niente.
Non sarò mai niente.
Non posso volere d'essere niente.
A parte questo, ho in me tutti i sogni del mondo.
F. Pessoa
~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
2:51 p.m.
New subject: Some Problems/Questions (about jack , qmidiarp and maybe other)
On Sun, 2008-01-13 at 05:18 +0100, luigi curzi wrote:
Partly. I mean when you have an audio signal that runs into the
soundcard, through jackd and the audio apps, and out again through the
audio card. For example if you have a vocalist singing into a microphone
to a track that's already been recorded. The vocalist will then hear a
delay between what she or he sings and what she or he hears in the
headphones. Which some people find very distracting.
In the above case you'd want to go for the lowest latency your system
can handle. Otherwise using high latency setting for jack would get rid
of the clicks and pops.
bye
John
Low latency is
necessary if you are using a midi controller to drive a
synth on the PC, or if you are recording and you need to do software
monitoring.
with software monitoring do you mean the recording from software
sources?
5:57 p.m.
--- John Anderson <ardour(a)semiosix.com> ha scritto:
On Sun, 2008-01-13 at 05:18 +0100, luigi curzi
wrote:
from software
so, if i want to use only my pc without external
instruments or vocalist (:-)) i don't need a very low
latency, is it?
> Low latency is necessary if you are using a
midi
controller to drive a
> synth on the PC, or if you are recording and
you
need to do software
monitoring.
with software monitoring do you mean the recording sources?
Partly. I mean when you have an audio signal that
runs into the
soundcard, through jackd and the audio apps, and out
again through the
audio card. For example if you have a vocalist
singing into a microphone
to a track that's already been recorded. The
vocalist will then hear a
delay between what she or he sings and what she or
he hears in the
headphones. Which some people find very distracting.
In the above case you'd want to go for the lowest
latency your system
can handle. Otherwise using high latency setting for
jack would get rid
of the clicks and pops.
bye
John
ciao and thanks
luigi
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14 Jan
14 Jan
5:55 a.m.
New subject: Some Problems/Questions (about jack , qmidiarp and maybe other)
On Sun, 2008-01-13 at 22:57 +0100, Luigi Curzi wrote:
--- John Anderson <ardour(a)semiosix.com> ha
scritto:
Pretty much. Try out high latency settings, and unless you find that
there are annoying delays you should be fine.
bye
John
On Sun, 2008-01-13 at 05:18 +0100, luigi curzi
wrote:
from software
so, if i want to use only my pc without external
instruments or vocalist (:-)) i don't need a very low
latency, is it? > Low latency is necessary if you are using a
midi
controller to drive a
> synth on the PC, or if you are recording and
you
need to do software
monitoring.
with software monitoring do you mean the recording sources?
Partly. I mean when you have an audio signal that
runs into the
soundcard, through jackd and the audio apps, and out
again through the
audio card. For example if you have a vocalist
singing into a microphone
to a track that's already been recorded. The
vocalist will then hear a
delay between what she or he sings and what she or
he hears in the
headphones. Which some people find very distracting.
In the above case you'd want to go for the lowest
latency your system
can handle. Otherwise using high latency setting for
jack would get rid
of the clicks and pops.
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days inactive
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days old
linux-audio-user@lists.linuxaudio.org
5 comments
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luigi curzi