[ALSA Gstreamer] - Yet Another Sound Problem...

abali · Posted: Thu Sep 23, 2004 12:22 am Post subject:

I had the same problem and it turned out that either I had to resample the audio stream to 48000 hertz before piping it into alsasink ("audioscale" might be the appropriate filter to insert into the chain) or I had to remove the period_time, period_size, buffer_size and rate settings from the ALSA dmix config. But even though I got it working, it was far from perfect: I experienced random delays and cracks in the output. Therefore I set up ESD to use ALSA as output and configured gstreamer to use esdsink instead of alsasink. Interestingly this introduction of an additional layer solved the problems, which led me to the conclusion that alsasink is way to buggy to use (at least with my crappy onboard soundcard).

ale · Posted: Thu Sep 23, 2004 2:16 am Post subject:

Well, ESD is the default sound server for GNOME, so I guess it should work... I'm trying it right now... most applications seem to work.

Guess we'll have to wait for an upgrade

Anyway thanx.

--Ale

abali · Posted: Thu Sep 23, 2004 10:09 am Post subject:

What I meant was that gstreamer-based applications only worked correctly if I told gstreamer to use ESD instead of ALSA. This is because the alsasink in gstreamer is buggy. However ESD can be set up to use native ALSA output (and thus dmixing) so it is still possible to run ESD/gstreamer and other ALSA-aware applications such as xmms at the same time.

ale · Posted: Thu Sep 23, 2004 4:43 pm Post subject:

Sorry, I didn't understand very well, as I said, I'm new to this whole dmixing stuff. (Actually I just cut and paste conf code from google

... I guess I should read more).

Anyway I set esd to use alsa, and got a 'nicer' asound.conf

This link was helpfull too.
[url]
http://alsa.opensrc.org/index.php?page=Dmix+Kde+-+arts%2C+ESD+and+SDL+quick+and+dirty+HOWTO
[/url]

Thanx for your help and time.

thrope · n00b Joined: 03 Nov 2004 Posts: 66

There is a patch here which fixes this problem...

There is a bug filed (no 623 i think) on http://bugtrack.alsa-project.org/

askoff · Tux's lil' helper Joined: 15 Apr 2004 Posts: 77

How can I get Gstreamer to resample audio? I guess there is a good resampler plugin for Gstreamer? I'm using amaroK with Gstreamer.

EDIT: And is there a way to get dithering also for Gstreamer?