[Gap-dev-discuss] Cynthiune: Further Evidence on Old Problem (was: Re: Fwd: Cynthiune: Two Problems)

[Richard Stonehouse]

Hi Sebastian,

Way back, I reported a problem playing MP3 files in Cynthiune. The 
problem was that, shortly after the music starts, there is a kind of 
high-pitched twittering noise that mostly blocks out the music. At the 
time it was non-reproducible on your set-up, but I now have further 
information in case it is still of interest.

On Sat, Mar 08, 2014 at 02:07:29PM +0100, Sebastian Reitenbach wrote:
> Hi Richard,
>
> On Wednesday, February 19, 2014 16:52 CET, Richard Stonehouse <address@hidden> 
> wrote:

> > >I do use(d) Cynthiune to play MP3 files quite a bit. Does it happen
> > >with all MP3 files or only with a certain file?
> >
> > It happens with all the MP3 files I've tried - both ones I've
> > generated using lame and ones I've downloaded.
> >
> > Having listened to a few more, it seems that the 'twittering' noise is
> > actually a delayed echo of the original sound, grossly distorted.
> >
> > By the way, I should have mentioned that au, wav and ogg work fine.
>
> I've tried playing MP3's again, but I don't seem to be able
> to reproduce this noise you hear.
>
> Sebastian

I've now found that the problem seems to depend on the machine 
architecture. On an old 32-bit machine, it does not occur. On a newer 
64-bit machine, it still does occur. Tests on both architectures used 
Cynthiune built from the same source (latest SVN) and same RPM spec 
file. au, wav, ogg and flac versions of the same test file work on 
both architectures.

The test file (attached) plays OK in madplay.

Also attached are the /proc/cpuinfo from both machines.

--
    Richard Stonehouse

test.mp3
Description: audio/mpeg

cpuinfo-32bit.txt
Description: Text document

cpuinfo-64bit.txt
Description: Text document