Bug 116517 - ESD will degrade sound volume when it changes frequency (filtering)
Summary: ESD will degrade sound volume when it changes frequency (filtering)
Alias: None
Product: Fedora
Classification: Fedora
Component: esound   
(Show other bugs)
Version: 1
Hardware: athlon
OS: Linux
Target Milestone: ---
Assignee: John (J5) Palmieri
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2004-02-22 13:40 UTC by Dimitris
Modified: 2013-03-13 04:46 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2004-08-08 16:11:48 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Dimitris 2004-02-22 13:40:09 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040124

Description of problem:
I've noticed that when i play some types of audio or viode files,
the generated volume is very low.

I searched around and i think the problem is with ESD when the
original stream frequency is converted. For example, in mplayer
when i see this:

Building audio filter chain for 48000Hz/2ch/16bit -> 44100Hz/2ch/16bit...

The resulting audio has an extremely low volume.

When i change the mplayer configuration to use the SDL filtering
as the audio device, then audio plays fine without any loss
in volume.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Find an audio stream which requires filtering (48khz to 44khz)
2. Play with mplayer via esd
3. Play with mplayer via SDL

Actual Results:  Via esd the audio volume is very low.

Via SDL/ALSA the audio volume is normal.

Expected Results:  Volume should be consistent.

Additional info:


Comment 1 Dimitris 2004-02-24 09:09:36 UTC
I found a work-around to this problem:

1) i edited /etc/esd.conf
2) and added "-r 48000" in the spawn options

As a result, all output is 48khz so esd will
never do any downsampling, thus will not
lower the volume.

Its not a real solution though, since downsampling
shouldnt affect the volume, so the bug is still there.

Comment 2 Dimitris 2004-08-08 16:11:48 UTC
No answer. closing.

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