Debian Bug report logs - #298682
gwc: displays two channels for one channel .WAV

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Package: gwc; Maintainer for gwc is Debian Multimedia Maintainers <pkg-multimedia-maintainers@lists.alioth.debian.org>; Source for gwc is src:gwc.

Reported by: A Costa <agcosta@gis.net>

Date: Wed, 9 Mar 2005 09:03:05 UTC

Severity: normal

Found in versions gwc/0.21.16~dfsg-1, 0.20.07-1

Forwarded to https://sourceforge.net/support/tracker.php?aid=3303524

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Report forwarded to debian-bugs-dist@lists.debian.org, Guenter Geiger (Debian/GNU) <geiger@debian.org>:
Bug#298682; Package gwc. Full text and rfc822 format available.

Acknowledgement sent to A Costa <agcosta@gis.net>:
New Bug report received and forwarded. Copy sent to Guenter Geiger (Debian/GNU) <geiger@debian.org>. Full text and rfc822 format available.

Message #5 received at submit@bugs.debian.org (full text, mbox):

From: A Costa <agcosta@gis.net>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: gwc: displays two channels for one channel .WAV
Date: Wed, 09 Mar 2005 03:59:49 -0500
Package: gwc
Version: 0.20.07-1
Severity: normal


When 'gwc' loads a .WAV file it shows two horizontal waveform bars, one
above the other.  Presumably these represent the left & right channels
of a stereo sound file.  The current help file and man page don't 
explain it.  Anyway...

The main screen shows two channels for a mono .WAV file.  Both channels
look the same.  Probably 'gwc' is making a copy of channel #1, and 
displaying that as channel #2.

It's possible to hilite one channel and not the other.  If I denoise 
one bar or channel, (of a mono .WAV), then highlight both 
channels and save it to a .WAV, the output file is mono.  Therefore
'gwc' isn't converting mono data to stereo -- it's just displaying mono
data as if it were stereo, with separate highlighting for TWO tracks,
even though there's really just ONE.

For mono data it'd be better if 'gwc' showed one and only one waveform bar.
The present graphic is confusing.


Hope this helps...


-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.9-1-686
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)

Versions of packages gwc depends on:
ii  dillo [www-browser]  0.8.3-1             GTK-based web browser
ii  elinks [www-browser] 0.10.2-2            advanced text-mode WWW browser
ii  encompass [www-brows 0.5.99.3-4          a lightweight web-browser for GNOM
ii  epiphany-browser [ww 1.4.8-1             Intuitive GNOME web browser
ii  fftw3                3.0.1-11            Library for computing Fast Fourier
ii  galeon [www-browser] 1.3.19-4            GNOME web browser for advanced use
ii  libart-2.0-2         2.3.17-1            Library of functions for 2D graphi
ii  libatk1.0-0          1.8.0-4             The ATK accessibility toolkit
ii  libbonobo2-0         2.8.1-2             Bonobo CORBA interfaces library
ii  libbonoboui2-0       2.8.1-2             The Bonobo UI library
ii  libc6                2.3.2.ds1-20        GNU C Library: Shared libraries an
ii  libgconf2-4          2.8.1-4             GNOME configuration database syste
ii  libglib2.0-0         2.6.3-1             The GLib library of C routines
ii  libgnome2-0          2.8.1-2             The GNOME 2 library - runtime file
ii  libgnomecanvas2-0    2.8.0-1             A powerful object-oriented display
ii  libgnomeui-0         2.8.1-3             The GNOME 2 libraries (User Interf
ii  libgnomevfs2-0       2.8.4-2             The GNOME virtual file-system libr
ii  libgtk2.0-0          2.6.2-4             The GTK+ graphical user interface 
ii  libice6              4.3.0.dfsg.1-12.0.1 Inter-Client Exchange library
ii  liborbit2            1:2.10.5-0.1        libraries for ORBit2 - a CORBA ORB
ii  libpango1.0-0        1.8.1-1             Layout and rendering of internatio
ii  libpopt0             1.7-5               lib for parsing cmdline parameters
ii  libsm6               4.3.0.dfsg.1-12.0.1 X Window System Session Management
ii  libsndfile1          1.0.10-2            Library for reading/writing audio 
ii  libxml2              2.6.16-3            GNOME XML library
ii  links [www-browser]  0.99+1.00pre12-1    Character mode WWW browser
ii  lynx [www-browser]   2.8.5-2             Text-mode WWW Browser
ii  mozilla-browser [www 2:1.7.5-1           The Mozilla Internet application s
ii  mozilla-firefox [www 1.0.1-2             lightweight web browser based on M
ii  opera-static [www-br 7.23-20031119.1     The Opera Web Browser
ii  xlibs                4.3.0.dfsg.1-12     X Keyboard Extension (XKB) configu
ii  yelp                 2.6.5-1             Help browser for GNOME 2
ii  zlib1g               1:1.2.2-4           compression library - runtime

-- no debconf information



Information forwarded to debian-bugs-dist@lists.debian.org, Guenter Geiger (Debian/GNU) <geiger@debian.org>:
Bug#298682; Package gwc. Full text and rfc822 format available.

Acknowledgement sent to Guenter Geiger <geiger@xdv.org>:
Extra info received and forwarded to list. Copy sent to Guenter Geiger (Debian/GNU) <geiger@debian.org>. Full text and rfc822 format available.

Message #10 received at 298682@bugs.debian.org (full text, mbox):

From: Guenter Geiger <geiger@xdv.org>
To: 298682@bugs.debian.org
Cc: jeff@redhawk.org
Subject: gwc: displays two channels for one channel .WAV
Date: Thu, 6 Oct 2005 19:22:35 +0200 (CEST)
Hi,

Sorry for replying that late. I am sorry but I do not have the
knowledge or resource to fix the problem. I am forwarding to the
upstream author.

Thanks,

Guenter

You wrote:
> Package: gwc
> Version: 0.20.07-1
> Severity: normal

> When 'gwc' loads a .WAV file it shows two horizontal waveform bars, one
> above the other.  Presumably these represent the left & right channels
> of a stereo sound file.  The current help file and man page don't
> explain it.  Anyway...

> The main screen shows two channels for a mono .WAV file.  Both channels
> look the same.  Probably 'gwc' is making a copy of channel #1, and
> displaying that as channel #2.

> It's possible to hilite one channel and not the other.  If I denoise
> one bar or channel, (of a mono .WAV), then highlight both
> channels and save it to a .WAV, the output file is mono.  Therefore
> 'gwc' isn't converting mono data to stereo -- it's just displaying mono
> data as if it were stereo, with separate highlighting for TWO tracks,
> even though there's really just ONE.

> For mono data it'd be better if 'gwc' showed one and only one waveform 
> bar.
> The present graphic is confusing.


> Hope this helps...







Set Bug forwarded-to-address to 'https://sourceforge.net/support/tracker.php?aid=3303524'. Request was from Alessio Treglia <alessio@debian.org> to control@bugs.debian.org. (Tue, 17 May 2011 20:12:04 GMT) Full text and rfc822 format available.

Bug Marked as found in versions gwc/0.21.16~dfsg-1. Request was from Alessio Treglia <alessio@debian.org> to control@bugs.debian.org. (Tue, 17 May 2011 20:12:06 GMT) Full text and rfc822 format available.

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