Does burning at high speeds affect quality?

[Vince604]

Does burning at say 40x or 48x affect the overall quality of your CD? I mean wouldn't it make more sense to burn something slower to ensure that the data is being burned on to the cd correctly?

 

[AMD_Man]

If your CD-Rs can handle that speed then probably not. If not, there is a risk of producing a coaster or errors on the CD.

<b><i>"A penny saved is a penny earned!"</i></b>

 

[Arrow]

In some instances, burning at such high speeds can have negative impacts. Some devices, especially some CD players, will not be able to read CDs burnt at high speeds (e.g. some car stereos).

Rob
Please visit <b><A HREF="http://www.ncix.com/canada/about.php?affiliateid=319048" target="_new">http://www.ncix.com/canada/about.php?affiliateid=319048</A></b>

 

[lakedude]

Burning faster definately reduces quality on a givin drive. That is why they say to overburn at 1x or the slowest the drive can go. However my (wonderful) TDK 40x burner can burn perfect at 24x plus but my (crappy) Phillips 8x burner has trouble at 8x. Burning at 16x or so takes just over 5 minutes and is fast enough for me. Cranking the thing up to max only reduces the time down to about 3 and a half minutes and isn't worth the risk to me. My new burner has not made a coster yet burning at 16x with (wonderful) 16x Verbatim disks.

Give me fuel, give me fire, give me that which I desire.

 

[FutureProof]

Burning Speed does affect reliability but it really is a waste of time to read at 1x and burn at the lowest speed of your burner. The only constant here is that audio should be read at no more than 8x UNLESS the reader is a Plexie or a late model, high-end Yammy - they both have extra circuitry for jitter-free DAE, which is why they're expensive. Extra cost for name-brand doesn't enter the equation. If Plextor and Yamaha could economically sell their units for the same price as, say, Liteon or ASUS they would Why 8x? The answer is math and I'd put us all to sleep if I explained the reasons

PSX is another kettle of fish. I read and write PSX as slow as possible. I keep my Ricoh MP7163A for just this reason. There is a marked difference in the step height between a CD-R and a console disc; and the laser reader on the console is lousy in various areas as well. I use expensive, quality, speed certified media for PSX. Verbatim light blue has possibly the best Aluminium spattering of any CD-R.

For a little elaboration on why speed is important, take a look at www.quantized.com for very good explanation of recorded and unrecorded disc tests. You will need to read each test several times to get an appreciation for what goes on at the atomic level

Hell Hath No Fury Like ASPI Scorned

 

[lakedude]

Make it click: <A HREF="http://www.quantized.com" target="_new">http://www.quantized.com</A>

My (wonderful) TDK does 48x audio rip.

I'm a Verbatim fan too.

Give me fuel, give me fire, give me that which I desire.

 

[FutureProof]

I tested the TDK 40x for DAE and it was excellent

Try these

http://www.quantized.com/Recorded_Disc_Tests.htm

http://www.quantized.com/Blank_Disc_Tests.htm

Hell Hath No Fury Like ASPI Scorned

 

[ejsmith2]

<A HREF="http://www.quantized.com/KnowledgeBase.htm" target="_new">http://www.quantized.com/KnowledgeBase.htm</A>

 

[Vince604]

Thanks you guys. Well my plan is to purchase the CRW-F1 from Yamha when it comes out in the next half month. That has been what I've been waiting for a long time. But I headed over to <A HREF="http://www.cdrlabs.com " target="_new">http://www.cdrlabs.com </A> and saw a couple press releases of high quality CD-R and CD-RWs coming out. TDK already announced its 48x/40x CD-Rs.


Well as you said audio should be read no more than 8x but my plan to burn anything would probably ripping it first to my hardrive then write it to my CDR/W, just incase of any copy protections. So if your saying audio should be read no more than 8x, does it mean audio should be burned at no more than 8x too?

I haven't read the articles at quantinized yet but I will later on today.

Another question that came into my mind was the type of CD-Rs that would be used. I'm planning on getting the proper media which would be media certified at that speed. But what company now has the best CD media? TDK, Mitsui, Kodak, etc.?..

 

[Arrow]

Taiyo Yudens - good stuff!

Rob
Please visit <b><A HREF="http://www.ncix.com/canada/about.php?affiliateid=319048" target="_new">http://www.ncix.com/canada/about.php?affiliateid=319048</A></b>

 

[lhgpoobaa]

its only logical really that at the microscopic scale a fast burn wil be alot less accurate than a slow one.

ive got a 'old' ricoh that burns at 12x.
so 12 x 150k/sec = 1800k/sec = 14400 kbits/sec = 14.7 million dots and blanks per second.

compare that to a 48x burning at full speed:
48 x 150 = 7200k/sex = 58.9 million dots & blanks per second.
change it around and thats 17 nanoseconds per bit of data!
and that is a huge number to do. especially as the cd is spinning and shaking at a high speed at the same time.

at that speed there MUST be some loss in integrity of the burn bits.


<font color=green>Proud member of THG's</font color=green> <font color=blue>Den Of Thieves</font color=blue> :lol:

 

[lagger]

CDR-ID identifies my fuji's I got at best buy recently for 3.00 USD ( 50 spindle) as Taiyo Yudens whoopee ( I like Verbatims a lot too but rarely see them as cheap as some other acceptable brands)

<font color=blue><b> Common Sense is anything but ... Common !</font color=blue></b>

 

[Vince604]

Ok. Lets PRETEND there was some loss in integrity....
What difference does it make compared to another CD that was burned at a lower speed?

Is it more likely the one burned slower will be much easier to read off a cd-rom and be able to read it faster than the one that was burned at 48x?

Any idea which companys will be introducing the 48x CDRs or 24x CD-RW?

 

[lhgpoobaa]

well i bet that the pits burnt are more.. pitty. better defined and shaped and in a more precise track allignment.

Proud owner of the <b>Beige Beast</b> :lol:

 

[phsstpok]

so 12 x 150k/sec = 1800k/sec = 14400 kbits/sec = 14.7 million dots and blanks per second.

I'm not sure how you get 14400 kbits/sec from 1800KB/sec but don't forget that CDs use EFM, Eight-Fourteen Modulation. Eight bits are encoded into fourteen bits. These codes have been chosen to reduce repetive patterns of 1's and 0's which makes it easier for correct detection and also easier for error correction.

To make your burn rate calculation more complicated, one "pit" or one "land" does not consitute one bit. Bits are partially determined by the transition from pit to land or land to pit. However, long pits or long lands represent a continuation of the previous transistion, that is, a continuation of ones or a continuation of zeroes, limited by the EFM encoding (I think. Just starting to learn this stuff, myself).

<b>I have so many cookies I now have a FAT problem!</b><P ID="edit"><FONT SIZE=-1><EM>Edited by phsstpok on 07/11/02 11:01 AM.</EM></FONT></P>