Date: Tue, 3 Dec 2013 14:13:56 +0100 From: clemens@ladisch.de To: cmst@live.com; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] Intermittent cut out on the video

Dolevo Jay wrote:

...

...

You would need software that measures that actual sample rate of both devices and resamples its output appropriately. Try using PulseAudio.

I have tried to apply pulseaudio but couldn't really manage it.

http://www.freedesktop.org/wiki/Software/PulseAudio/FAQ/#index31h3

Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

I think this is not what I want. I don't want to combine the two sound cards. I want to route the audio being played on one sound card to the other sound card. I have found the following answer: http://askubuntu.com/questions/168333/routing-sound-from-different-cards-to-...

So with the following line:

pactl load-module module-loopback source=<name_or_index> sink=<name_or_index>

I should be able to achieve what I want. However, I know no pulseaudio and I got some issues with it already.

For example, I start the pulseaudio with

root@dolevo:~# start-pulseaudio-kde W: [pulseaudio] main.c: This program is not intended to be run as root (unless --system is specified).

I guess it starts working properly after this call. However, I call

pactl list

to get the list of the devices but I get

root@dolevo:~# pactl list Connection failure: Connection refused pa_context_connect() failed: Connection refused

So, what should I put as source and sink? I have already tried calling the following:

pactl load-module module-loopback source=hw:1,0 sink=0,3

However I again receive:

Connection failure: Connection refused pa_context_connect() failed: Connection refused

I would appreciate if you could help.

From: cmst@live.com To: alsa-devel@alsa-project.org Date: Wed, 4 Dec 2013 10:08:15 +0000 Subject: Re: [alsa-devel] Intermittent cut out on the video

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From: cmst@live.com To: alsa-devel@alsa-project.org Date: Tue, 3 Dec 2013 15:43:39 +0000 Subject: Re: [alsa-devel] Intermittent cut out on the video

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Date: Tue, 3 Dec 2013 14:13:56 +0100 From: clemens@ladisch.de To: cmst@live.com; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] Intermittent cut out on the video

Dolevo Jay wrote:

...

...

You would need software that measures that actual sample rate of both devices and resamples its output appropriately. Try using PulseAudio.

I have tried to apply pulseaudio but couldn't really manage it.

http://www.freedesktop.org/wiki/Software/PulseAudio/FAQ/#index31h3

Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

I think this is not what I want. I don't want to combine the two sound cards. I want to route the audio being played on one sound card to the other sound card. I have found the following answer: http://askubuntu.com/questions/168333/routing-sound-from-different-cards-to-...

So with the following line:

pactl load-module module-loopback source=<name_or_index> sink=<name_or_index>

I should be able to achieve what I want. However, I know no pulseaudio and I got some issues with it already.

For example, I start the pulseaudio with

root@dolevo:~# start-pulseaudio-kde W: [pulseaudio] main.c: This program is not intended to be run as root (unless --system is specified).

I guess it starts working properly after this call. However, I call

pactl list

to get the list of the devices but I get

root@dolevo:~# pactl list Connection failure: Connection refused pa_context_connect() failed: Connection refused

So, what should I put as source and sink? I have already tried calling the following:

pactl load-module module-loopback source=hw:1,0 sink=0,3

However I again receive:

Connection failure: Connection refused pa_context_connect() failed: Connection refused

I would appreciate if you could help. _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

Hi Clemens,

Could you please tell me where I can get some help about pulseaudio? I tried pulseaudio-discuss but my question is not even posted there yet.

Since my question is now related to the pulseaudio, I have asked my current question to: http://stackoverflow.com/questions/20370418/pulseaudio-connection-issue

I'd appreciate your help.

Regards, _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

I have come to conclusion that this issue is way more complex that I thought and won't be "possible" to implement even with the help of pulseaudio since I will require a complete new implementation. I thought that it would be solved by a configuration file in pulseaudio but apprently some development/code writing will be needed as well.

What I don't understand, ok one of the sound card gets drifted over time if two sound cards are employed in the system and therefore I got cut outs but why doesn't this happen if I use the same sound card alone? I mean the audio from my application is perfect if I use only the a sound card. But it produces intermittent cut outs if I use another sound card (b) together with a. Shouldn't have I gotten also the cut outs in the first casae?

Please enlighten me.