audio multivoice, anyone??

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dorin

Beginner

Posts: 4

Thursday, June 24th 2004, 10:41am

audio multivoice, anyone??

hello
does anybody know how or if it's possible in this gem of a free software to have multiple audio streams playing _IN THE SAME TIME_?

i've tried it already on five different computers with different hardwares, thus soundcards and none managed to offer this facility taken for granted in the sacrilege you call windows.

so i want polyfony on fedora kde, say xmms while receiving amsn messages so hearing the blips and tunes.

a collateral problem is that when a conflict like this happens the card phux up and doesn't work for a few minutes.
maybe they're connected. but all i can say is that i had this issue on ALL my systems, so it's not something hard but rather surely software related.
thanx

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dorin

Beginner

Posts: 4

Friday, June 25th 2004, 12:34pm

helllooooo?

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anda_skoa

Professional

Posts: 1,273

Location: Graz, Austria

Occupation: Software Developer

Friday, June 25th 2004, 4:16pm

There are several options.
If the soundcard offers more than one DSP device, you can for example configure aRts (KDE sound daemon) to use dsp1 and keep dsp0 free for other apps.

Linux 2.6 sound architecture ALSA should be able to have multi-open for the same device on all sound cards, maybe needs anothe kernel module installed.

You can tell other applications to output sound through the aRts daemon, thus having only the daemon aqcuire the sound device.
For instance XMMS has an aRts output plugin, other applications might work when started by artsdsp
#> artsdsp application

Cheers,
_

Qt/KDE Developer
Debian User

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dorin

Beginner

Posts: 4

Tuesday, June 29th 2004, 12:43am

finally! a reply!
and even more or less on the point!

ok, i'm a bit puzzled, cause ida know how am i supposed to know how many dsps does my card offer. it's a standard card - wasn't linux supposed to autofeel around things?

you speak in conditional tenses (alsa should blalbla) what the hell is going on?? am i the only one and i'm asking for such fancy facilities that you haven't yet heard anyone talk about it or even have it yourself on your machine as well??
don't you want this?!
it seems a pretty default feature to me. . isnt' linux emulating windows? there it's de facto . .
i'm using xmms s0 yes, i see there oss driver currently used, but also both of which you spoke undeterministically: alsa and arts, which and how should i use, and how and why the heck isn't it defaulted?

i may seem harsh, and that's because i'm frustrated
oh heck, even as i write this my playback was interrupted by an instant message and now it ain't and won't work for a few minutes

. .it's annoying!!!

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anda_skoa

Professional

Posts: 1,273

Location: Graz, Austria

Occupation: Software Developer

Tuesday, June 29th 2004, 5:22am

Quoted

Original von dorin

ok, i'm a bit puzzled, cause ida know how am i supposed to know how many dsps does my card offer. it's a standard card - wasn't linux supposed to autofeel around things?

It does, for example on SoundBlaster Live.
Applications use the first device on default, because that one most likely exists. A lot of them can be configured to use the other device.

Quoted

you speak in conditional tenses (alsa should blalbla) what the hell is going on?? am i the only one and i'm asking for such fancy facilities that you haven't yet heard anyone talk about it or even have it yourself on your machine as well??

I don't have it, I am running a 2.4 kernel and multi open was introduced in the ALSA drivers for 2.6, as I wrote above.

Quoted

it seems a pretty default feature to me. . isnt' linux emulating windows?

No, it isn't, fortunately.
Offering just what Windows does would be a pretty limited experience.

Quoted

alsa and arts, which and how should i use, and how and why the heck isn't it defaulted?

I don't use XMMS myself, I could only tell you what I have read so far (that there is an aRts output plugin which allows XMMS to output sound through aRts)

It isn't default because this is only needed when running on KDE with a sounds system not offering multiple devices or multi open.

Cheers,
_

Qt/KDE Developer
Debian User