Arbitrary skipping of Audio CDs

User-8961 wrote on 3/12/1999, 1:45 AM

A couple of questions:

1 - What kind of PC do you have (Processor & RAM)?
2 - What kind of hard drive is the audio coming off of (IDE, EIDE,
UDMA,
etc.)?
2 - Is this a SCSI or an IDE CD Writer?

I think the symptoms you describe might be attributed to buffer
underruns. That's when the computer can't keep the data flow
continuously fast enough to keep the CD Writer's buffer full. Of
course, I'm no expert, but that's what I've heard in the past.
Also, I
was warned when buying my 4 speed writer. I was told that my
computer
need to be fast with plenty of memory. When I told them I was going
to
runit it on a PII 350 with 128 mb ram I was told that I shouldn't
have a
problem. So the faster you're writer is, so must your computer be.

Hope it helps a little.

Orion wrote:

> I just got a Smart-n-Friendly 8x Rocket CD-R, which
> bundles Sonic Foundry's CD Architect 4.0e software.
> I used it to create a Audio-CD but when I play it on
> home CD-Player it arbitrarily skips, never at
> the same place in a track and all tracks are effected.
> I am using TDK Cd-R blanks that are certified for 8x
> recording. Is there something that I'm doing wrong.

User-8961 wrote on 3/12/1999, 5:18 AM

This may sound stupid, but I got the same "stuttering" when I played
any
CD in my car for a while. Then I ran a CD player cleaner in there
and
all the skipping went away. Maybe that will help.

Good luck.

Orion wrote:

> I just got a Smart-n-Friendly 8x Rocket CD-R, which
> bundles Sonic Foundry's CD Architect 4.0e software.
> I used it to create a Audio-CD but when I play it on
> home CD-Player it arbitrarily skips, never at
> the same place in a track and all tracks are effected.
> I am using TDK Cd-R blanks that are certified for 8x
> recording. Is there something that I'm doing wrong.

Orion wrote on 3/12/1999, 6:49 AM

roller8,

I have PII 333Mhz 64MB EIDE and SCSI. The wav's are without
errors and no errors during burn. So my system was able to
"feed" my 8x without a problem.

But the CD actually "stutters" meaning it plays a segment
of audio twice and never at the same spot. "Like like Just for a split second thought. Interestingly
thought on my 24X CD-ROM, I don't hear these glitches.

- Orion

roller8 wrote:
>>A couple of questions:
>>
>>1 - What kind of PC do you have (Processor & RAM)?
>>2 - What kind of hard drive is the audio coming off of
(IDE, EIDE,
>>UDMA,
>>etc.)?
>>2 - Is this a SCSI or an IDE CD Writer?
>>
>>I think the symptoms you describe might be attributed to
buffer
>>underruns. That's when the computer can't keep the data
flow
>>continuously fast enough to keep the CD Writer's buffer
full. Of
>>course, I'm no expert, but that's what I've heard in the
past.
>>Also, I
>>was warned when buying my 4 speed writer. I was told
that my
>>computer
>>need to be fast with plenty of memory. When I told them
I was going
>>to
>>runit it on a PII 350 with 128 mb ram I was told that I
shouldn't
>>have a
>>problem. So the faster you're writer is, so must your
computer be.
>>
>>Hope it helps a little.
>>
>>
>>
>>Orion wrote:
>>
>>> I just got a Smart-n-Friendly 8x Rocket CD-R, which
>>> bundles Sonic Foundry's CD Architect 4.0e software.
>>> I used it to create a Audio-CD but when I play it on
>>> home CD-Player it arbitrarily skips, never at
>>> the same place in a track and all tracks are effected.
>>> I am using TDK Cd-R blanks that are certified for 8x
>>> recording. Is there something that I'm doing wrong.
>>
>>
>>
>>

Orion wrote on 3/12/1999, 10:14 AM

Ya right it does sound stupid.

The player is clean and a store bought
album/CD plays just fine.

Thanx for your suggestions though.

roller8 wrote:
>>This may sound stupid, but I got the same "stuttering"
when I played
>>any
>>CD in my car for a while. Then I ran a CD player cleaner
in there
>>and
>>all the skipping went away. Maybe that will help.
>>
>>Good luck.
>>
>>
>>
>>Orion wrote:
>>
>>> I just got a Smart-n-Friendly 8x Rocket CD-R, which
>>> bundles Sonic Foundry's CD Architect 4.0e software.
>>> I used it to create a Audio-CD but when I play it on
>>> home CD-Player it arbitrarily skips, never at
>>> the same place in a track and all tracks are effected.
>>> I am using TDK Cd-R blanks that are certified for 8x
>>> recording. Is there something that I'm doing wrong.
>>
>>
>>
>>

pwppch wrote on 3/12/1999, 5:09 PM

Try buring at a lower rate.

I have seen where if I burn at 4x some CD players will do what you
describe.
Buring the same material at 1x or 2x solves the problem.

No, I don't know why.

Peter

Orion wrote in message ...
>roller8,
>
>I have PII 333Mhz 64MB EIDE and SCSI. The wav's are without
>errors and no errors during burn. So my system was able to
>"feed" my 8x without a problem.
>
>But the CD actually "stutters" meaning it plays a segment
>of audio twice and never at the same spot. "Like like Just for a split second thought. Interestingly
>thought on my 24X CD-ROM, I don't hear these glitches.
>
>- Orion
>
>roller8 wrote:
>>>A couple of questions:
>>>
>>>1 - What kind of PC do you have (Processor & RAM)?
>>>2 - What kind of hard drive is the audio coming off of
>(IDE, EIDE,
>>>UDMA,
>>>etc.)?
>>>2 - Is this a SCSI or an IDE CD Writer?
>>>
>>>I think the symptoms you describe might be attributed to
>buffer
>>>underruns. That's when the computer can't keep the data
>flow
>>>continuously fast enough to keep the CD Writer's buffer
>full. Of
>>>course, I'm no expert, but that's what I've heard in the
>past.
>>>Also, I
>>>was warned when buying my 4 speed writer. I was told
>that my
>>>computer
>>>need to be fast with plenty of memory. When I told them
>I was going
>>>to
>>>runit it on a PII 350 with 128 mb ram I was told that I
>shouldn't
>>>have a
>>>problem. So the faster you're writer is, so must your
>computer be.
>>>
>>>Hope it helps a little.
>>>
>>>
>>>
>>>Orion wrote:
>>>
>>>> I just got a Smart-n-Friendly 8x Rocket CD-R, which
>>>> bundles Sonic Foundry's CD Architect 4.0e software.
>>>> I used it to create a Audio-CD but when I play it on
>>>> home CD-Player it arbitrarily skips, never at
>>>> the same place in a track and all tracks are effected.
>>>> I am using TDK Cd-R blanks that are certified for 8x
>>>> recording. Is there something that I'm doing wrong.
>>>
>>>
>>>
>>>

SonicJG wrote on 4/13/1999, 7:37 AM

Here's something to consider:

The faster the burn, the greater the more dependent you are
on the write-laser doing it's job correctly. Basically,
the disc is spinning faster, so at 4x or 8x, it writes at a
greater angle, with slightly less precision. If your CD
Player has only one read head, it may have difficulty
tracking the spiral correctly, and may mis-track, resulting
in stut-stut-stuttering. Often, one CD player will have
difficulty playing a CD that another has no problems with.
Your best bet, as Peter said, is burning more slowly if
this happens to you.

In short, it's a combination between the high-speed write
being a little sloppy, and a CD Player's inability to
correct for this.

BTW, generally a buffer underrun implies that the CD
Burner's cache is empty, because the data throughput to it
was bottle-necked earlier on. If this happens, you'll
either get a big ol' glitch in your audio, or your CD write
will fail.

Rafael wrote:
>>I just got a Smart-n-Friendly 8x Rocket CD-R, which
>>bundles Sonic Foundry's CD Architect 4.0e software.
>>I used it to create a Audio-CD but when I play it on
>>home CD-Player it arbitrarily skips, never at
>>the same place in a track and all tracks are effected.
>>I am using TDK Cd-R blanks that are certified for 8x
>>recording. Is there something that I'm doing wrong.
>>

Russell wrote on 8/23/1999, 8:06 AM

We moved into audio CDR production about 2 years ago and initially
had heaps of trouble with some customers having all sorts of weird
problems playing our copies. We did some tests and especially
concentrated on writing speed and the TYPE OF DISK USED. The big
difference we found was the type of CDR - in those days you could use
green/gold,blue/gold or gold/gold. We found the best (read most
reliable out their in the customers cd players) was the gold/gold and
it seems to be all about the light reflectivity off the CDR. Some cd
players just cant track the low levels of light reflected back from
the CDR's and you get skipping/repeating or just complete tracks get
jumped over. Since moving to gold/gold (Mitsui actually) we have had
absolutely no problems at all. We have also noticed our clients
(recording studios) are using the same type of product for their
masters. Playing around with the writing speed didnt help us at all
so we stuck to 4x (we wont go to 8x until it is well settled down,
kind of like using version 1 of software - wait for the update first).
Just incidentally I know that Sony here have recently had a lot of
trouble with the blue/silvers and it is due to this reflectivity
thing.

Rafael wrote:
>>I just got a Smart-n-Friendly 8x Rocket CD-R, which
>>bundles Sonic Foundry's CD Architect 4.0e software.
>>I used it to create a Audio-CD but when I play it on
>>home CD-Player it arbitrarily skips, never at
>>the same place in a track and all tracks are effected.
>>I am using TDK Cd-R blanks that are certified for 8x
>>recording. Is there something that I'm doing wrong.
>>