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List:       alsaplayer-devel
Subject:    RE: [Alsaplayer-devel]Re: Dead time between tracks...
From:       "Mark Knecht" <mknecht () controlnet ! com>
Date:       2003-09-08 17:09:03
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Mike,
   Just my 2 cents, but I think in the random play mode it doesn't matter if
there is dead time between tracks since the artist didn't intend you to play
them in that order anyway.

   The artistic 'problem' I have with alsaplayer putting dead time between
two tracks that are in order is that the artist (RWPL, Pink Floyd,
Quicksilver Messenger Service) put their tracks on CD with audio right out
to the end of the first track and audio starting at the very beginning of
the second track since they intended there be no dead time. From what I can
tell, if we just read data and continued to play it right out to the end of
the first track and just continued reading the next track we wouldn't have
this problem.

   It seems to me (from a logical perspective only) that when alsaplayer is
playing track 1, and it sees that track 1 is ending, it doesn't get ready to
play track 2. It seems like it might be waiting for track 1 to finish before
it decides what the next thing to do it.

   If it just kept going, when playing tracks in order (not random) that
everything would probably work correctly.

   Anyway, I don't think the random order list is an issue.

thanks,
Mark

> -----Original Message-----
> From: alsaplayer-devel-admin@lists.tartarus.org
> [mailto:alsaplayer-devel-admin@lists.tartarus.org]On Behalf Of Mike
> Patnode
> Sent: Monday, September 08, 2003 9:30 AM
> To: alsaplayer-devel@lists.tartarus.org
> Subject: [Alsaplayer-devel]Re: Dead time between tracks...
>
>
>
> The right fix for this requires either a database, or more info in the
> MP3 header.  If the track in question is being played in a random list
> of songs, then you probably want a moment of silence between the next
> song (or a merge transition).  So the trick is to flag continuous songs
> and know what the next song on that album is.  If the next song in the
> playlist is the next song on the album and the continous flag is set,
> you use the perfect merge transition effect.
>
> Now, you have to be sure your ripper ripped the tracks without any
> overlap AND that you don't produce an artifact in the merge.   Pretty
> tricky problem.   Since alsaplayer doesn't use a database (at least not
> the last time I looked), I think this would be pretty tough.  It's been
> on my list of problems to solve for a while now.  Definitely tricky to
> handle automatically.
>
> mp
>
>
> From: Andy Lo A Foe <andy@alsaplayer.org>
>
> You might want to try playing "CD.cdda" when you have a audio CD with
> seamless transition between tracks. The CDDA plugin will then map the
> CD
> as one huge track. Not ideal but until the plugin is made smarter...
> (how
> does one detect these kind of CD's? :)
>
> Other options:
> - Make the player core aware of audio CDs so it handles buffering
>   differently. Downturn: create dependancies from player core to plugin
> - Use the crossfading feature. Dowturn: requires code hacking right
> now.
>
> Regards,
> Andy
>
> On Wed, Aug 27, 2003 at 09:40:07AM -0700, Mark Knecht wrote:
> > Hi,
> >    I've started using alsaplayer again since I now have an alsa
> driver that
> > works for my sound card. One minor frustration I've run into is that
> on a
> > few CDs which have tracks where audio flows from one track to the
> next
> > without any breaks, alsaplayer is inserting about .5-1 second of dead
> air.
> > This most certainly breaks the mood. (RPWL - Stock is an example.) I
> checked
> > on Linux-Audio-User and others have seen/heard the same thing.
> >
> >    One response I got on this said that possibly the cdda plugin had
> changed
> > back in December in a way that might be effecting this.
> >
> >    Is there any configuration option for alsaplayer that will fix
> this?
> >
> >    If not, is this something that could be looked at and addressed in
> a
> > future release?
> >
> > Thanks,
> > Mark
> >
> >
> >
> > _______________________________________________
> > alsaplayer-devel mailing list
> > alsaplayer-devel@lists.tartarus.org
> > http://lists.tartarus.org/mailman/listinfo/alsaplayer-devel
>
>
>
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>
>



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