Arch Linux

skoczo

Member

Registered: 2012-09-12

Posts: 55

[solved] Multiple USB sound cards

If there is a contraindication to connect several USB sound cards.
I want to write QT app which will play different music on each card.
I know that QT support such thing "QAudioDeviceInfo::availableDevices(QAudio::AudioOutput))" but what about arch?

Last edited by skoczo (2014-05-06 07:26:27)

Rexilion

Member

Registered: 2013-12-23

Posts: 784

Re: [solved] Multiple USB sound cards

Linux is capable of handling multiple soundcards. You could even have more than 16 of the same type of you enable CONFIG_SND_DYNAMIC_MINORS in your kernel.

I think you have to use the alsa-libs to drive multiple cards. QT is a widget toolkit.

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Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 29,596

Website

Re: [solved] Multiple USB sound cards

As indicated above, alsa is perfectly capable of driving multiple sound cards.  Allegedly, pulseaudio may help with this - I think such tasks are one of the main goals of pulse, but I have zero experience with it myself.

The QT functions you refer to are just a front-end for either alsa, or one of the other sound systems.

I'm also not sure what you mean with your final question "what about arch?"  You can use QT in arch - it seems like you are comparing/contrasting QT and arch.  That just makes no sense: one is a toolkit library, the other is a distro.

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"UNIX is simple and coherent..." - Dennis Ritchie, "GNU's Not UNIX" -  Richard Stallman

skoczo

Member

Registered: 2012-09-12

Posts: 55

Re: [solved] Multiple USB sound cards

Ok. So i think that everything is clear.
Arch support multiple sound cards.

Thanks for help.