Bug 6775

Summary:	mpg123 with esd makes an mp3 sound scratchy
Product:	[Retired] Red Hat Linux	Reporter:	nobody+egalanos
Component:	esound	Assignee:	Michael Fulbright <msf>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	6.1	CC:	ml
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	1999-12-03 19:39:25 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description nobody+egalanos 1999-11-06 12:16:08 UTC

A very high priority bug :)

mpg123r as shipped with RH6.1 makes one particular mp3 I
have sound scratchy. What should have been an sinusoidal
base sound turns into a static scratch sound. I downloaded
mpg123r and compiled it. It does not show this problem when
compiled as normal (ie using /dev/dsp directly). When
compiled against esd (after patch to audio_esd.c to make it
compile ie esdserver -> NULL), it then makes the mp3 sound
bad. mp3 is a standard 44kHz MPEG1 layer 3, 128kbps joint
stereo file.

Comment 1 Bill Nottingham 1999-11-22 16:33:59 UTC

Can you post a sample mp3 that shows this?

Comment 2 nobody+egalanos 1999-11-23 00:41:59 UTC

Sample at

ftp://ftp.cse.unsw.edu.au/pub/users/egalanos/test.mp3

Comment 3 Mario Lorenz 1999-11-23 20:03:59 UTC

This .mp3 is not 44khz, its 48khz. Which kinda explains whats happening. ESD's
mixing routines dont handle anything != 44khz very well. This could be
considered an esd bug/unimplemented feature. Either esd needs to be fixed or
replaced by something else (alsa should become usable soon, and even then, nas
was the older standard for doing network audio / mixing)

Comment 4 Michael Fulbright 1999-12-03 19:39:59 UTC

There are community efforts to replace esd in progress, but this is not
something we can fix in the short term.