Re: [iPAQ] underwater audio

Nicolas,

Are you saying that I am actually hearing decoding errors and not a problem
with the sound driver?

I thought it might have to do with the sampling rate, bitrate, or number
of channels in my mp3.

Are there known to play correctly mp3s available for me to test with?

Do you happen to know if your sound driver fixes made it into the 0.16 beta?

I'm looking at MAD now.

thanks,

Dwayne

> On Fri, 22 Sep 2000, Dwayne Jacques Fontenot wrote:
>
> >
> > hi,
> >
> > I'm using 0.16beta audio. Trying to play an mp3 file and it sounds like
> > it's playing underwater.
> >
> > This is out of the speaker (no headphones right now).
> >
> > The loud parts almost sound correct, but the soft parts make no sound
> > at all or sound like they're bubbling from underwater.
>
> I would really really suggest that the iPaq community have a look at
> madplay (http://www.mars.org/home/rob/proj/mpeg/).
>
> I personally hacked one of the first fixed point MP3 players (namely
> splay) more than one year ago. Even if it was more performant than most
> alternatives, the accuracy i.e. sound quality of splay doesn't even
> qualify for the minimum ISO/IEC compliance. The madplay site features a
> comparison of many MP3 players, notably all known available fixed point
> based ones. Among all of them, mpg123 is __the worst__ one. Even worse
> than splay. On the other hand, madplay is the only fixed point based MP3
> player that qualifies as "fully compliant" accuracy.
>
> At that point I decided to hack on madplay and see if I could improve its
> performances without loosing accuracy, and I finally got it to go beyond
> splay. Many of my changes have been already integrated into the current
> madplay release. Therefore I'm not supporting splay anymore, but
> advocating for madplay instead.
>
>
> Nicolas
Received on Fri Sep 22 18:34:59 2000