[Biturbos4] CD Player Troubles
brayd at rogers.com
Thu Jan 8 15:22:25 EST 2004
> -----Original Message-----
> From: Ti Kan [mailto:ti at amb.org]
> Sent: January 8, 2004 2:20 PM
> To: David Bray
> Cc: BiturboS4
> Subject: Re: [Biturbos4] CD Player Troubles
> David Bray writes:
> > 1. The CDRs I made are in standard CD-Audio (WAV) format so
> this is NOT a
> > case of trying to access a non-existent MP3 decoder in the S4's
> Bose stereo.
> Just a minor (if irrelevant) correction... What's on normal audio CDs
> are not WAV files. It's raw headerless PCM, and contiguous from
> beginning to end. There is a TOC section in the beginning that describes
> the starting locations of each track, and other info. "WAV" connotes
> Microsoft RIFF headers, which do not exist on an audio CD.
> I know, picky, picky. :)
You're right (of course :)), but I simply wanted to convey that they were
not in MP3 format and thus, MP3 decoding was neither necessary nor relevant.
> > 2. This CDR, AND many others I've made, have played fault-free
> in my car.
> > In fact, on the day in question, it had been playing for over 70 minutes
> > flawlessly. I am aware of the lower reflectivity of CDRs vs.
> pressed CDs,
> > but if it played, clearly it wasn't too low to be compatible.
> (BTW, CDRWs
> > won't play because they have even lower reflectivity.) However, if the
> > electronics in my unit have drifted "out of spec" due to age, possibly
> > exacerbated by temperature and/or dampness, that is plausible.
> Try playing some non-CDR (i.e., factory pressed) discs. If they
> work fine,
> then your hypothesis is probably correct. Otherwise, your changer has
> probably gone south.
Well, my initial post *did* say:
a) when the fault occurred I tried a commercial (pressed) CD as
well as another burned CDR, both with the same (erroneous) result
b) since that occurrence though, no other discs have failed again
I know, picky, picky! ;0)
But seriously, any idea about whether a cleaning would work?
And, just in case it's relevant, I'm referring to the single CD player in
the head unit (I have no changer).
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