Thanks, I understand your situation now. This is not good for Csound. Do
you want to experiment with rtaudio in place of PortAudio?

I should add that I am still getting dropouts with ALSA. My Linux machine
is a 1 gigahertz PIII with 256 megabytes RAM, and top shows only a slight
load for rendering trappedrt.csd, so I am starting to wonder if the
dropouts are a PortAudio problem and not a PC problem. 

How important is ASIO on Windows for Csound? Is this something that you can
live without, or wait for the PortAudio developers to do?

Original Message:
-----------------
From:  jpff@codemist.co.uk
Date: Sun, 16 May 2004 07:07:58 +0100
To: csound-dev@eartha.mills.edu, csound-dev@eartha.mills.edu
Subject: [CSOUND-DEV:4727] Re: Linux audio


>>>>> "gogins@pipeline" == gogins@pipeline com  writes:

 gogins@pipeline> Well, I seem to recall that you said PortAudio
 gogins@pipeline> reports only one interface.

No, I see exactly 2 devices, /dev/dsp and the sound card, just like
you

 gogins@pipeline> I infer that PortAudio, OSS, and Csound do not play well
together, but I 
 gogins@pipeline> guess that PortAudio, ALSA, and Csound may well be quite
usable - I am
 gogins@pipeline> probably getting dropouts because my machine is still old
and slow, just
 gogins@pipeline> not as old and slow as the old one! The aplay utility
works just fine, so
 gogins@pipeline> does xmms.

Yes, aplay works correctly.  What does not is csound creating a mono
output, or a stereo file on the M-Audio (which is a 12 channel chip)
The PA setup does not look at the .asoundrc file and so in my set ups
I cannot select the SPDIF output on the Hamerfall or the analog output
on the M-Audio.

==John ffitch


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Greetings:

  Michael, are you running a stock kernel or one enabled for low-latency ?

  John, what is the output from 'cat /proc/asound/cards' on your 
ALSA-enabled machine ?

Best,

dp



gogins@pipeline.com wrote:

>Thanks, I understand your situation now. This is not good for Csound. Do
>you want to experiment with rtaudio in place of PortAudio?
>
>I should add that I am still getting dropouts with ALSA. My Linux machine
>is a 1 gigahertz PIII with 256 megabytes RAM, and top shows only a slight
>load for rendering trappedrt.csd, so I am starting to wonder if the
>dropouts are a PortAudio problem and not a PC problem. 
>
>How important is ASIO on Windows for Csound? Is this something that you can
>live without, or wait for the PortAudio developers to do?
>
>Original Message:
>-----------------
>From:  jpff@codemist.co.uk
>Date: Sun, 16 May 2004 07:07:58 +0100
>To: csound-dev@eartha.mills.edu, csound-dev@eartha.mills.edu
>Subject: [CSOUND-DEV:4727] Re: Linux audio
>
>
>  
>
>>>>>>"gogins@pipeline" == gogins@pipeline com  writes:
>>>>>>            
>>>>>>
>
> gogins@pipeline> Well, I seem to recall that you said PortAudio
> gogins@pipeline> reports only one interface.
>
>No, I see exactly 2 devices, /dev/dsp and the sound card, just like
>you
>
> gogins@pipeline> I infer that PortAudio, OSS, and Csound do not play well
>together, but I 
> gogins@pipeline> guess that PortAudio, ALSA, and Csound may well be quite
>usable - I am
> gogins@pipeline> probably getting dropouts because my machine is still old
>and slow, just
> gogins@pipeline> not as old and slow as the old one! The aplay utility
>works just fine, so
> gogins@pipeline> does xmms.
>
>Yes, aplay works correctly.  What does not is csound creating a mono
>output, or a stereo file on the M-Audio (which is a 12 channel chip)
>The PA setup does not look at the .asoundrc file and so in my set ups
>I cannot select the SPDIF output on the Hamerfall or the analog output
>on the M-Audio.
>
>==John ffitch
>
>
>--------------------------------------------------------------------
>mail2web - Check your email from the web at
>http://mail2web.com/ .
>
>
>  
>

xenakis:~> cat /proc/asound/cards
0 [I82801CAICH3   ]: ICH - Intel 82801CA-ICH3
                     Intel 82801CA-ICH3 at 0x1c00, irq 11
>>>>> "Dave" == Dave Phillips  writes:

 Dave>   John, what is the output from 'cat /proc/asound/cards' on your 
 Dave> ALSA-enabled machine ?

xenakis:~> cat /proc/asound/cards
0 [I82801CAICH3   ]: ICH - Intel 82801CA-ICH3
                     Intel 82801CA-ICH3 at 0x1c00, irq 11

cage:~> cat /proc/asound/cards
0 [M2496          ]: ICE1712 - M Audio Delta DiO 2496
                     M Audio Delta DiO 2496 at 0x1460, irq 11

jpff:~ 31> cat /proc/asound/cards 
0 [R15            ]: RME9636 - RME Digi9636 (Rev 1.5)
                     RME Digi9636 (Rev 1.5) at 0xdb000000, irq 5

I also have a machine with M Audio Audophile 2496

==John ffitch

Hi Michael, 

For dropouts, are you running as root and with --sched flag?  I'm
running a PIII-M 1.2ghz with 768megs ram and it's running in realtime
with these settings without any dropouts. 

Sidenote:  I just tried to run csound5 with examples/trappedrt.csd and
it took me a couple of minutes to realize that I wasn't able to set the
soundcard on it on the commandline because the settings in the CsOptions
was overriding what I fed in the commandline. Shouldn't flags fed in on
the command line override CsOptions?

Thanks,
steven


On Sun, 2004-05-16 at 08:16, gogins@pipeline.com wrote:
> Thanks, I understand your situation now. This is not good for Csound. Do
> you want to experiment with rtaudio in place of PortAudio?
> 
> I should add that I am still getting dropouts with ALSA. My Linux machine
> is a 1 gigahertz PIII with 256 megabytes RAM, and top shows only a slight
> load for rendering trappedrt.csd, so I am starting to wonder if the
> dropouts are a PortAudio problem and not a PC problem. 
> 
> How important is ASIO on Windows for Csound? Is this something that you can
> live without, or wait for the PortAudio developers to do?
> 
> Original Message:
> -----------------
> From:  jpff@codemist.co.uk
> Date: Sun, 16 May 2004 07:07:58 +0100
> To: csound-dev@eartha.mills.edu, csound-dev@eartha.mills.edu
> Subject: [CSOUND-DEV:4727] Re: Linux audio
> 
> 
> >>>>> "gogins@pipeline" == gogins@pipeline com  writes:
> 
>  gogins@pipeline> Well, I seem to recall that you said PortAudio
>  gogins@pipeline> reports only one interface.
> 
> No, I see exactly 2 devices, /dev/dsp and the sound card, just like
> you
> 
>  gogins@pipeline> I infer that PortAudio, OSS, and Csound do not play well
> together, but I 
>  gogins@pipeline> guess that PortAudio, ALSA, and Csound may well be quite
> usable - I am
>  gogins@pipeline> probably getting dropouts because my machine is still old
> and slow, just
>  gogins@pipeline> not as old and slow as the old one! The aplay utility
> works just fine, so
>  gogins@pipeline> does xmms.
> 
> Yes, aplay works correctly.  What does not is csound creating a mono
> output, or a stereo file on the M-Audio (which is a 12 channel chip)
> The PA setup does not look at the .asoundrc file and so in my set ups
> I cannot select the SPDIF output on the Hamerfall or the analog output
> on the M-Audio.
> 
> ==John ffitch
> 
> 
> --------------------------------------------------------------------
> mail2web - Check your email from the web at
> http://mail2web.com/ .
> 
> 
>