Andy Farnell wrote:
Make sure that the sample rate of your audio system (software) is set to that of Pd (usually 44100 or 48000) and that it is talking to the soundcard. If other audio apps are working then this is probably ok.
I have change the sample rate from 44100 to 48000 but nothing happens.
Try connecting the output of Pd to the input of another audio app that gives you some visual indication of a signal, like a VU bar. If that lights up you have debugged, insofar as you know Pd is creating a signal.
I need more informatio about this. I dont have any idea about "connecting the output of Pd to the input of another audio app that gives you some visual indication of a signal"
One thing more: when i open Pd, i push over the "compute audio" button (it becomes purple color). I open "Media" and i find "default-MIDI" in purple.
If i select "ALSA-MIDI" the console shows this:
"ALSA lib seq_hw.c:457:(snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory Pd: system call timed out"
I have supposed ALSA it not installed so I have write this:
sudo apt-get install alsa
and it says this (between other things):
"This is the most recent release of alsa-base."
I
From: Andy Farnell padawan12@obiwannabe.co.uk To: Javier GarcÃa tirengarfio@hotmail.com Subject: Re: [PD] Test Audio: just trying to hear anything Date: Wed, 18 Apr 2007 05:47:22 +0100
On Tue, 17 Apr 2007 18:18:54 +0200 Javier GarcÃa tirengarfio@hotmail.com wrote:
Configure your audio drivers, start Jack etc
I dont know what you mean.
Make sure that the sample rate of your audio system (software) is set to that of Pd (usually 44100 or 48000) and that it is talking to the soundcard. If other audio apps are working then this is probably ok.
Can you get a visual indication of an audio signal (eg meterbridge) ?
I dont know what you mean.
Try connecting the output of Pd to the input of another audio app that gives you some visual indication of a signal, like a VU bar. If that lights up you have debugged, insofar as you know Pd is creating a signal.
Any way i dont know exactly what i have to do with the Test to hear the wave. Just open it and select "-40" for example??
Yes. Soon as you do that Pd should be sending audio.
From: Andy Farnell padawan12@obiwannabe.co.uk To: pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Tue, 17 Apr 2007 12:17:36 +0100
Checklist:
Other audio apps work fine?
Speakers, cables, amplifier, soundcard, mixer (in that order)?
Is one of the audio driver boxes (ALSA, JACK, OSS, ASIO etc) on the
media
menu checked?
Configure your audio drivers, start Jack etc
Can you get a visual indication of an audio signal (eg meterbridge) ?
On Tue, 17 Apr 2007 00:19:03 +0200 Javier GarcÃa tirengarfio@hotmail.com wrote:
Hi,
im trying to hear anything with the Test Audio, but i cant get it...
Maybe i should read something first but i dont find too many things
about
the Test audio...
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Hallo, Javier GarcÃa hat gesagt: // Javier GarcÃa wrote:
One thing more: when i open Pd, i push over the "compute audio" button (it becomes purple color). I open "Media" and i find "default-MIDI" in purple.
If i select "ALSA-MIDI" the console shows this:
"ALSA lib seq_hw.c:457:(snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory Pd: system call timed out"
I have supposed ALSA it not installed so I have write this:
I'm very sure, that ALSA is installed, otherwise you wouldn't have sound at all. For whatever reason, on some systems the kernel modules for the ALSA midi subsystem aren't properly loaded, this will lead to this error. You can fix this on a running system by "sudo modprobe snd-seq" and make it permanent by adding a line "snd-seq" to the file "/etc/modules" to make the sequencer module load automatically after a reboot on Debian-based systems (like Ubuntu etc.)
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
Frank Barknecht wrote:
I'm very sure, that ALSA is installed, otherwise you wouldn't have sound at all. For whatever reason, on some systems the kernel modules for the ALSA midi subsystem aren't properly loaded, this will lead to this error. You can fix this on a running system by "sudo modprobe snd-seq"
Thanks, now there isnt any error message about alsa but i still dont hear anything...
I will repeat what i do. This my first step:
I open Pd >> I push "compute audio" >> Media >> I found "default MIDI" activated >> go to "Test Audio and Midi" >> I select "-40" and i dont hear anything...
From: Frank Barknecht fbar@footils.org To: pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Wed, 18 Apr 2007 09:26:42 +0200
Hallo, Javier GarcÃa hat gesagt: // Javier GarcÃa wrote:
One thing more: when i open Pd, i push over the "compute audio" button
(it
becomes purple color). I open "Media" and i find "default-MIDI" in
purple.
If i select "ALSA-MIDI" the console shows this:
"ALSA lib seq_hw.c:457:(snd_seq_hw_open) open /dev/snd/seq failed: No
such
file or directory Pd: system call timed out"
I have supposed ALSA it not installed so I have write this:
I'm very sure, that ALSA is installed, otherwise you wouldn't have sound at all. For whatever reason, on some systems the kernel modules for the ALSA midi subsystem aren't properly loaded, this will lead to this error. You can fix this on a running system by "sudo modprobe snd-seq" and make it permanent by adding a line "snd-seq" to the file "/etc/modules" to make the sequencer module load automatically after a reboot on Debian-based systems (like Ubuntu etc.)
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
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Do other applications make sound? Is the card muted by Alsamixer? Check the Alsamixer app and see.
d.
Javier García wrote:
Frank Barknecht wrote:
I'm very sure, that ALSA is installed, otherwise you wouldn't have sound at all. For whatever reason, on some systems the kernel modules for the ALSA midi subsystem aren't properly loaded, this will lead to this error. You can fix this on a running system by "sudo modprobe snd-seq"
Thanks, now there isnt any error message about alsa but i still dont hear anything...
I will repeat what i do. This my first step:
I open Pd >> I push "compute audio" >> Media >> I found "default MIDI" activated >> go to "Test Audio and Midi" >> I select "-40" and i dont hear anything...
From: Frank Barknecht fbar@footils.org To: pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Wed, 18 Apr 2007 09:26:42 +0200
Hallo, Javier García hat gesagt: // Javier García wrote:
One thing more: when i open Pd, i push over the "compute audio" button
(it
becomes purple color). I open "Media" and i find "default-MIDI" in
purple.
If i select "ALSA-MIDI" the console shows this:
"ALSA lib seq_hw.c:457:(snd_seq_hw_open) open /dev/snd/seq failed: No
such
file or directory Pd: system call timed out"
I have supposed ALSA it not installed so I have write this:
I'm very sure, that ALSA is installed, otherwise you wouldn't have sound at all. For whatever reason, on some systems the kernel modules for the ALSA midi subsystem aren't properly loaded, this will lead to this error. You can fix this on a running system by "sudo modprobe snd-seq" and make it permanent by adding a line "snd-seq" to the file "/etc/modules" to make the sequencer module load automatically after a reboot on Debian-based systems (like Ubuntu etc.)
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
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Derek Holzer wrote:
Do other applications make sound? Is the card muted by Alsamixer? Check the Alsamixer app and see.
I have just intalled and open Alsamixergui but i dont hear anything, should I hear something??
From: Derek Holzer derek@umatic.nl To: Javier GarcÃa tirengarfio@hotmail.com CC: fbar@footils.org, pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Thu, 19 Apr 2007 09:40:58 +0200
Do other applications make sound? Is the card muted by Alsamixer? Check the Alsamixer app and see.
d.
Javier GarcÃa wrote:
Frank Barknecht wrote:
I'm very sure, that ALSA is installed, otherwise you wouldn't have sound at all. For whatever reason, on some systems the kernel modules for the ALSA midi subsystem aren't properly loaded, this will lead to this error. You can fix this on a running system by "sudo modprobe snd-seq"
Thanks, now there isnt any error message about alsa but i still dont hear anything...
I will repeat what i do. This my first step:
I open Pd >> I push "compute audio" >> Media >> I found "default MIDI" activated >> go to "Test Audio and Midi" >> I select "-40" and i dont hear anything...
From: Frank Barknecht fbar@footils.org To: pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Wed, 18 Apr 2007 09:26:42 +0200
Hallo, Javier GarcÃa hat gesagt: // Javier GarcÃa wrote:
One thing more: when i open Pd, i push over the "compute audio" button
(it
becomes purple color). I open "Media" and i find "default-MIDI" in
purple.
If i select "ALSA-MIDI" the console shows this:
"ALSA lib seq_hw.c:457:(snd_seq_hw_open) open /dev/snd/seq failed: No
such
file or directory Pd: system call timed out"
I have supposed ALSA it not installed so I have write this:
I'm very sure, that ALSA is installed, otherwise you wouldn't have sound at all. For whatever reason, on some systems the kernel modules for the ALSA midi subsystem aren't properly loaded, this will lead to this error. You can fix this on a running system by "sudo modprobe snd-seq" and make it permanent by adding a line "snd-seq" to the file "/etc/modules" to make the sequencer module load automatically after a reboot on Debian-based systems (like Ubuntu etc.)
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
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Hallo, Javier GarcÃa hat gesagt: // Javier GarcÃa wrote:
Derek Holzer wrote:
Do other applications make sound? Is the card muted by Alsamixer? Check the Alsamixer app and see.
I have just intalled and open Alsamixergui but i dont hear anything, should I hear something??
Only if you are playing something. A mixer software is used to set volumes of channels, but it doesn't generate any sound itself. For generating sound, you could use the "speaker-test" program, that normally comes with the ALSA utils package (in Debian/Ubuntu this is the package called "alsa-utils")
Just run
Frank Barknecht _ ______footils.org_ __goto10.org__
Frank Barknecht wrote:
For generating sound, you could use the "speaker-test" program, that normally comes with the ALSA utils package (in Debian/Ubuntu this is the package called "alsa-utils")
thanks Frank, I've tried to install alsa-utils but I havent got it... any other test to find out what is my problem with the sound? I have ubuntu edgy.
From: Frank Barknecht fbar@footils.org To: pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Sun, 22 Apr 2007 10:34:52 +0200
Hallo, Javier GarcÃa hat gesagt: // Javier GarcÃa wrote:
Derek Holzer wrote:
Do other applications make sound? Is the card muted by Alsamixer? Check the Alsamixer app and see.
I have just intalled and open Alsamixergui but i dont hear anything,
should
I hear something??
Only if you are playing something. A mixer software is used to set volumes of channels, but it doesn't generate any sound itself. For generating sound, you could use the "speaker-test" program, that normally comes with the ALSA utils package (in Debian/Ubuntu this is the package called "alsa-utils")
Just run
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Hallo, Javier GarcÃa hat gesagt: // Javier GarcÃa wrote:
Frank Barknecht wrote:
For generating sound, you could use the "speaker-test" program, that normally comes with the ALSA utils package (in Debian/Ubuntu this is the package called "alsa-utils")
thanks Frank, I've tried to install alsa-utils but I havent got it...
Please try again, alsa-utils is an important package. It includes all the debugging and configuration tools for ALSA like alsamixer, aplay, aconnect etc. "sudo apt-get install alsa-utils" should install it.
Here's the package homepage: https://launchpad.net/ubuntu/edgy/i386/alsa-utils
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
Frank Barknecht wrote:
Please try again, alsa-utils is an important package. It includes all the debugging and configuration tools for ALSA like alsamixer, aplay, aconnect etc. "sudo apt-get install alsa-utils" should install it.
I installed it and typed "speaker test". The only thing i heard was noise in the same time this lines below appeared. (If you dont understand i can translate them)
speaker-test 1.0.11
El dispositivo de reproducción es default Los parámetros del flujo son 48000Hz, S16_LE, 1 canales Usando 16 octavas de ruido rosa Frecuencia establecida a 48000Hz (se solicitó 48000Hz) El rango del tamaño del buffer va desde 2048 hasta 16384 El rango del tamaño del perÃdo va desde 1024 hasta 1024 Utilizando el tamaño máximo de buffer 16384 Periodos = 4 fue establecido period_size = 1024 fue establecido buffer_size = 16384 0 - Frontal izquierdo Tiempo por perÃodo = 2,662514 0 - Frontal izquierdo Tiempo por perÃodo = 2,986795 0 - Frontal izquierdo Tiempo por perÃodo = 2,986777 0 - Frontal izquierdo Tiempo por perÃodo = 2,986826 0 - Frontal izquierdo Tiempo por perÃodo = 2,986783 0 - Frontal izquierdo Tiempo por perÃodo = 2,986814 0 - Frontal izquierdo Tiempo por perÃodo = 2,987081 0 - Frontal izquierdo Tiempo por perÃodo = 2,986516 0 - Frontal izquierdo Tiempo por perÃodo = 2,986817 0 - Frontal izquierdo Tiempo por perÃodo = 2,986796 0 - Frontal izquierdo Tiempo por perÃodo = 2,987113 0 - Frontal izquierdo Tiempo por perÃodo = 2,986573 0 - Frontal izquierdo Tiempo por perÃodo = 2,986712 0 - Frontal izquierdo Tiempo por perÃodo = 2,987091 0 - Frontal izquierdo Tiempo por perÃodo = 2,986440 0 - Frontal izquierdo Tiempo por perÃodo = 2,987008 0 - Frontal izquierdo Tiempo por perÃodo = 2,986883 0 - Frontal izquierdo Tiempo por perÃodo = 3,007837 0 - Frontal izquierdo Tiempo por perÃodo = 2,965442 0 - Frontal izquierdo Tiempo por perÃodo = 2,986798 0 - Frontal izquierdo Tiempo por perÃodo = 3,008192 0 - Frontal izquierdo Tiempo por perÃodo = 2,986843 0 - Frontal izquierdo Tiempo por perÃodo = 2,965680 0 - Frontal izquierdo Tiempo por perÃodo = 2,986487 0 - Frontal izquierdo Tiempo por perÃodo = 2,986816 0 - Frontal izquierdo Tiempo por perÃodo = 2,987027 0 - Frontal izquierdo
From: Frank Barknecht fbar@footils.org To: pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Mon, 23 Apr 2007 08:56:16 +0200
Hallo, Javier GarcÃa hat gesagt: // Javier GarcÃa wrote:
Frank Barknecht wrote:
For generating sound, you could use the "speaker-test" program, that normally comes with the ALSA utils package (in Debian/Ubuntu this is the package called "alsa-utils")
thanks Frank, I've tried to install alsa-utils but I havent got it...
Please try again, alsa-utils is an important package. It includes all the debugging and configuration tools for ALSA like alsamixer, aplay, aconnect etc. "sudo apt-get install alsa-utils" should install it.
Here's the package homepage: https://launchpad.net/ubuntu/edgy/i386/alsa-utils
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
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Hallo, Javier GarcÃa hat gesagt: // Javier GarcÃa wrote:
I installed it and typed "speaker test". The only thing i heard was noise in the same time this lines below appeared.
speaker-test is testing with pink noise by default. To make sure it's speaker-test, that you are hearing, you could also test with a sine wave by calling speaker-test as:
$ speaker-test -t 2
"speaker-test -h" gives an overview of the possible options:
$ speaker-test -h
speaker-test 0.0.8
Usage: speaker-test [OPTION]... -h,--help help -D,--device playback device -r,--rate stream rate in Hz -c,--channels count of channels in stream -f,--frequency sine wave frequency in Hz -F,--format sample format -b,--buffer ring buffer size in us -p,--period period size in us -t,--test 1=use pink noise, 2=use sine wave -s,--speaker single speaker test. Values 1=Left or 2=right
It seems your card is working. The error you get in Pd ("Couldn't sync A/D" etc.) hints at a problem with Pd and your card. What card do you have? Could you send the output of this command please:
$ cat /proc/asound/cards
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
On Mon, 23 Apr 2007 22:05:32 +0200 Javier García tirengarfio@hotmail.com wrote:
Frank Barknecht wrote:
Please try again, alsa-utils is an important package. It includes all the debugging and configuration tools for ALSA like alsamixer, aplay, aconnect etc. "sudo apt-get install alsa-utils" should install it.
I installed it and typed "speaker test". The only thing i heard was noise in the same time this lines below appeared. (If you dont understand i can translate them)
speaker-test 1.0.11
El dispositivo de reproducción es default Los parámetros del flujo son 48000Hz, S16_LE, 1 canales Usando 16 octavas de ruido rosa Frecuencia establecida a 48000Hz (se solicitó 48000Hz) El rango del tamaño del buffer va desde 2048 hasta 16384 El rango del tamaño del perído va desde 1024 hasta 1024
It's working and happy afaics. But you didn't hear anytying? Have a really good fiddle with your ALSA mixer settings.
Please elaborate on "The only thing i heard was noise"
Did you hear residual hiss? Or something else?
Andy Farnell wrote:
It's working and happy afaics. But you didn't hear anything? Have a really good fiddle with your ALSA mixer settings.
Please elaborate on "The only thing i heard was noise"
Did you hear residual hiss? Or something else?
No, i dont hear anything.
About the ALSA mixer settings i think everything is ok.
When i say noise, i mean residual hiss, yes.
Some more clues:
when i try to test the audio with "Test audio and MIDI" i have selected "default MIDI". If I select ALSA, "default MIDI" and "ALSA" are selected and this message appears:
tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A ..... tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A audio I/O stuck... closing audio
I hope this helps little more...
From: Andy Farnell padawan12@obiwannabe.co.uk To: Javier GarcÃa tirengarfio@hotmail.com CC: fbar@footils.org, pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Tue, 24 Apr 2007 09:51:20 +0100
On Mon, 23 Apr 2007 22:05:32 +0200 Javier GarcÃa tirengarfio@hotmail.com wrote:
Frank Barknecht wrote:
Please try again, alsa-utils is an important package. It includes all the debugging and configuration tools for ALSA like alsamixer, aplay, aconnect etc. "sudo apt-get install alsa-utils" should install it.
I installed it and typed "speaker test". The only thing i heard was
noise in
the same time this lines below appeared. (If you dont understand i can translate them)
speaker-test 1.0.11
El dispositivo de reproducción es default Los parámetros del flujo son 48000Hz, S16_LE, 1 canales Usando 16 octavas de ruido rosa Frecuencia establecida a 48000Hz (se solicitó 48000Hz) El rango del tamaño del buffer va desde 2048 hasta 16384 El rango del tamaño del perÃdo va desde 1024 hasta 1024
It's working and happy afaics. But you didn't hear anytying? Have a really good fiddle with your ALSA mixer settings.
Please elaborate on "The only thing i heard was noise"
Did you hear residual hiss? Or something else?
-- Use the source
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rerun alsaconf and make sure the sample rate is set to 48k then try starting Pd with these options
pd -r 48000 -channels 2 -audiobuf 160 -audiodev 1
On Mon, 23 Apr 2007 23:27:18 +0200 Javier García tirengarfio@hotmail.com wrote:
when i try to test the audio with "Test audio and MIDI" i have selected "default MIDI". If I select ALSA, "default MIDI" and "ALSA" are selected and this message appears:
tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A ..... tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A audio I/O stuck... closing audio
I hope this helps little more...
Frank Barknecht wrote:
It seems your card is working. The error you get in Pd("Couldn't sync A/D" etc.) hints at a problem with Pd and your card. What card do you have? Could you send the output of this command please:
$ cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel HDA Intel at 0xefffc000 irq 66
And Andy Farnell wrote:
rerun alsaconf and make sure the sample rate is set to 48k then try starting Pd with these options
pd -r 48000 -channels 2 -audiobuf 160 -audiodev 1
Sorry, what do you mean with "alsaconf"?
From: Andy Farnell padawan12@obiwannabe.co.uk To: Javier GarcÃa tirengarfio@hotmail.com CC: fbar@footils.org, pd-list@iem.at Subject: Re: [PD] Test Audio: just trying to hear anything Date: Tue, 24 Apr 2007 11:55:41 +0100
rerun alsaconf and make sure the sample rate is set to 48k then try starting Pd with these options
pd -r 48000 -channels 2 -audiobuf 160 -audiodev 1
On Mon, 23 Apr 2007 23:27:18 +0200 Javier GarcÃa tirengarfio@hotmail.com wrote:
when i try to test the audio with "Test audio and MIDI" i have selected "default MIDI". If I select ALSA, "default MIDI" and "ALSA" are selected
and
this message appears:
tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A ..... tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A audio I/O stuck... closing audio
I hope this helps little more...
-- Use the source
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Javier García wrote:
Sorry, what do you mean with "alsaconf"?
http://www.linuxmanpages.com/man8/alsaconf.8.php
"Alsaconf is a simple shell script which tries to detect the sound cards on your system and writes a suitable configuration file for ALSA. It will try to guess what GNU/Linux distribution you're running, and will act accordingly to the standards of that distribution, if specific support is available.
Alsaconf will write a modutils snippet which can be then used by modutils to load the correct parameters for your sound card. "
It's very useful as long as you have one soundcard. I recommend to start here.
It sounds to me like you're still struggling with the basics of ALSA. You might read some of the ALSA and Linux Sound documentation listed under "Documentation" and "Installation" here:
http://alsa.opensrc.org/Main_Page
d.
Javier García schreef:
Some more clues:
when i try to test the audio with "Test audio and MIDI" i have selected "default MIDI". If I select ALSA, "default MIDI" and "ALSA" are selected and this message appears:
tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A ..... tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A tried but couldn't sync A/D/A audio I/O stuck... closing audio
take oss instead of alsa in "Media".
m
mik wrote:
take oss instead of alsa in "Media".
and don't forget to load the "snd_pcm_oss" module first, to be able to do this!
i found that using oss emulation often is a good idea (if you don't care for advanced features, whatever they are), especially if other applications work fine with your soundcard and only pd has problems with it.
however, if you don't get any sound from any application (alsaplay, play, audacity,...), then this won't help you either.
mfgsdfrt IOhannes
IOhannes m zmoelnig wrote:
mik wrote:
take oss instead of alsa in "Media".
and don't forget to load the "snd_pcm_oss" module first, to be able to do this!
i found that using oss emulation often is a good idea (if you don't care for advanced features, whatever they are), especially if other applications work fine with your soundcard and only pd has problems with it.
however, if you don't get any sound from any application (alsaplay, play, audacity,...), then this won't help you either.
mfgsdfrt IOhannes
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ola, i have also to say that i have often less problems with OSS emulation on different linux-machines then direct with ALSA. With "direct"-alsa i have a lot of DIO-errors: A/D/A sync bla.. DAC blocked...(even with the same audio buffer)
Or does the OSS-emulation just not report the errors?
eo
MOritz
OSS (emulation) and JACK are the interfaces of choice for Linux. Miller never really worked out direct ALSA support, and continues to recommend OSS long after its obsolescence. Of the two, I've found JACK more useful.
best, d.
moritz wrote:
ola, i have also to say that i have often less problems with OSS emulation on different linux-machines then direct with ALSA. With "direct"-alsa i have a lot of DIO-errors: A/D/A sync bla.. DAC blocked...(even with the same audio buffer)
Thanks for the info Derek, I have been getting mad crazy errors with ALSA and now I know to use Jack. Is ALSA really in that rough of shape?? It's always been a pain for me since I run PPC hardware which is very, very poorly supported by ALSA unfortunately (I don't think I've had a single machine with a functional line in capture under linux...)
Kevin
On 4/25/07, Derek Holzer derek@umatic.nl wrote:
OSS (emulation) and JACK are the interfaces of choice for Linux. Miller never really worked out direct ALSA support, and continues to recommend OSS long after its obsolescence. Of the two, I've found JACK more useful.
best, d.
moritz wrote:
ola, i have also to say that i have often less problems with OSS emulation on different linux-machines then direct with ALSA. With "direct"-alsa i have a lot of DIO-errors: A/D/A sync bla.. DAC blocked...(even with the same audio buffer)
-- derek holzer ::: http://www.umatic.nl ---Oblique Strategy # 83: "How would someone else do it?"
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Hallo, Kevin McCoy hat gesagt: // Kevin McCoy wrote:
Thanks for the info Derek, I have been getting mad crazy errors with ALSA and now I know to use Jack. Is ALSA really in that rough of shape?? It's always been a pain for me since I run PPC hardware which is very, very poorly supported by ALSA unfortunately (I don't think I've had a single machine with a functional line in capture under linux...)
On any Linux system that's not ancient you normally are using ALSA drivers anyway. When you start Pd with "-oss" it will just use ALSA's OSS emulation (and you will use some of the more advanced features, ALSA has to offer). And when you run Pd over Jack, jackd will use ALSA as default as well.
Pd's OSS support is the oldest of the three (or four when you include PA) sound interfaces on Linux, so it is probably the most stable one. However I also ran into problems with "pd -oss" once, which were solved by using "pd -alsa". So I wouldn't say, that either of them is more stable. For example I generally have the most problems when running Pd over Jack, probably because I also do Gem graphics with the same Pd. Currently I prefer "pd -alsa" on my laptop.
One thing to note is that Pd only supports the hw:X and plughw:X devices of ALSA. I couldn't make Pd accept the full range of possible ALSA devices (which is basically unlimited as you can give devices arbitrary names in your asoundrc config file). And when using hw:X, Pd for example doesn't support 24bit devices directly, you need to use the slightly less efficient plughw:X devices then.
But I wouldn't share Derek's opinion that Pd's ALSA support is basically unusable. (As for me, -jack is less usable than -alsa.) It's worth trying all options until you find something that works for you.
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
Hallo, Frank Barknecht hat gesagt: // Frank Barknecht wrote:
When you start Pd with "-oss" it will just use ALSA's OSS emulation (and you will use some of the more advanced features, ALSA has to offer).
I meant to write "and you will *lose* some of the more advanced features".
Ciao
Frank Barknecht _ ______footils.org_ __goto10.org__
Javier GarcÃa wrote:
Frank Barknecht wrote:
I'm very sure, that ALSA is installed, otherwise you wouldn't have sound at all. For whatever reason, on some systems the kernel modules for the ALSA midi subsystem aren't properly loaded, this will lead to this error. You can fix this on a running system by "sudo modprobe snd-seq"
Thanks, now there isnt any error message about alsa but i still dont hear anything...
I will repeat what i do. This my first step:
I open Pd >> I push "compute audio" >> Media >> I found "default MIDI"
hmm, you are basically not interested in MIDI (fixing this is just a side-product of your problem) but in AUDIO. as long as you have neiter "OSS" nor "ALSA" nor "JACK" activated (note: not all 3 options might be present on your system; and "ALSA" is NOT the same as "ALSA-MIDI") you will not hear anything.
ALSA-MIDI is really just the seq-subsystem of alsa (for sharing midi data); it is definitely _not_ ALSA+MIDI otoh, ALSA is the audio-subsytem of alsa; you can well run audio over oss (or jack) and midi over alsa.
activated >> go to "Test Audio and Midi" >> I select "-40" and i dont hear anything...
this might sound trivial, but: try selecting "-20", probably -40 is just to low for your soundcard/setting....
fma.dr IOhannes
On 19/04/2007, at 10.21, IOhannes m zmoelnig wrote:
activated >> go to "Test Audio and Midi" >> I select "-40" and i
dont hear anything...this might sound trivial, but: try selecting "-20", probably -40 is just to low for your soundcard/setting....
Or maybe see if the numbers in the numberboxes below - where it says
"audio input (rms db) - are more then 0 anywhere.
That would be like seeing if there is any sound that Andy talked about.
I'm not expert, just a debug hint..
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Andy Farnell -
Derek Holzer -
Frank Barknecht -
IOhannes m zmoelnig -
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