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Topic: CD24 (Read 7608 times) previous topic - next topic
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CD24

I need to know how common this format is and its technical specs.

CD24

Reply #1 –
Call me crazy, but the first thing that comes to mind when I see "CD24" is a 24-minute, 8cm audio CD single. Is that what you are referring to?

CD24

Reply #2 –
Actually, no.

Some "audio engineer" is trying to convince me on another board that there is an actual 24-bit audio-CD standard.

And this is his reference link.

If there really is such a format as 24-bit audio-CD, then I need to know about it, because I can't find anything conclusive on Google. It's a bit strange to not find any reference to an industry standard if you ask me.

CD24

Reply #3 –
Quote
Burn CDs using Standard "Red Book" (16-bit/44.1kHz) and high resolution formats…up 24-bit, 96kHz

Standard "Red Book" and high resolution formats…up 24-bit, 96kHz are mutually exclusive. I think the 'and' there implies that.

CD24

Reply #5 –
This much I have already deduced.

Anything else I can use to disprove him?

CD24

Reply #6 –
Ask him if there's an international standard on high-resolution CDs which has been published and is available? Where to get it?

I think there's a standard on mono CDs, but I've never seen a mono CD in the wild.

CD24

Reply #8 –
On the alesis tech, it says "red book 24bit". This is not standard, would a
normal cd player playback this without problems.? btw. is this CD24 = HDCD.?

CD24

Reply #9 –
Quote
The introduction of MasterLink also marks the debut of CD24™, a breakthrough technology from Alesis. CD24, a proprietary format developed by Alesis engineers, exceeds the previously limited resolution of Red Book audio on standard compact discs. Utilizing the ISO 9660 disc format and AIFF audio files on standard CD blanks, MasterLink 9600 creates high resolution CDs that can be played back on MasterLink 9600, in addition to being accessible to digital audio workstations at studios and mastering facilities worldwide.


from here

Edit: added emphasis

CD24

Reply #10 –
Which makes me think...how is this all that different from a data cdr with .wav's with your choice of sampling rate/bit depth?

Marketing?
"You can fight without ever winning, but never win without a fight."  Neil Peart  'Resist'

CD24

Reply #11 –
That's right.

CD24

Reply #12 –
Quote
On the alesis tech, it says "red book 24bit". This is not standard, would a
normal cd player playback this without problems.? btw. is this CD24 = HDCD.?

No it wouldn't play in any standard CD players. If they are indeed aiff files on CD ROMs, it is not impossible that one day, a universal multimedia player (MP3/WMA/WAV/CD, etc) play it.

It is not HDCD at all. HDCD is 16 bits, with encrypted information for boosting dynamic range (thus achieving the equivalent of 20 bits under some circumstances, for some frequencies, at given times in the track).

Edit : in conclusion, this in NO audio CD. This is a plain data CD, and you can put anything you want on a data CD, even 256 bits 20 MHz raw audio. It just stores any computer file you want.

CD24

Reply #13 –
So..
Quote
in conclusion, this in NO audio CD. This is a plain data CD, and you can put anything you want on a data CD, even 256 bits 20 MHz raw audio. It just stores any computer file you want.

This is basicly nothing more than a small computer with the alesis logo.
At a closer look at the "masterlink comparisson chart" on this pdf:
http://www.alesis.com/products/ml9600/ml9600_bro2.pdf
well, for Alesis to survive on this front, maybe a new PR staff is in order,
certainly they should stop feeding lies.

CD24

Reply #14 –
Quote
well, for Alesis to survive on this front, maybe a new PR staff is in order, certainly they should stop feeding lies.

Quite the opposite! Good PR staffs spread lies like if there was no tomorrow. Consider the lies spread in PRs by Microsoft, Real, Ahead... (Just to focus on the ones that release PRs of interest to HA)

By all means, they should keep them. The way the PR world is now, an honest staff releasing truthful PRs would be fating their company to doom.

CD24

Reply #15 –
Standard or not, there is of course one major caveat to this "CD24" format: wouldn't a 700MB CD-R only hold about 20 minutes of 24/96 audio? Seems as though a recorder utilizing DVD+R/W media would be a more practical (and useful) approach.

CD24

Reply #16 –
Quote
Quite the opposite! Good PR staffs spread lies like if there was no tomorrow. Consider the lies spread in PRs by Microsoft, Real, Ahead... (Just to focus on the ones that release PRs of interest to HA)

By all means, they should keep them. The way the PR world is now, an honest staff releasing truthful PRs would be fating their company to doom.

Your kidding, Right.
Example:
Regarding Alesis, I use Alesis signal prosessors at work
since around 84. And i would say "no PR, is good PR.". Those days it was the "word of mouth" who did the desisions.
For a period of 5-8 years, Alesis have been kings in this erea.
But was bypassed by (lexicon i think)
All the PR Alesis did for there prosessors later on. did infact have a reverse effect,
"The more PR. a product need, the more likely is it that the sales numbers
are bad, and that again, mirrors on the quality. This isn`t always true,
but perticular for the "pro. audio equipment" it`s a valid quote.

As for MS. Real. Ahead etc.. i don`t trust them a bit.
 

CD24

Reply #17 –
(Laughing)

I just noticed in Alesis' PDF document, that they offer you a deal on CD-R's. And there's an image there showing a BASF CD-R along with some other paraphanelia [sic]. I once bought a BASF CD-R, which indentified as manufactured by 4M. 4M = crap last time I checked.

CD24

Reply #18 –
Quote
Your kidding, Right.

No

Quote
Those days it was the "word of mouth" who did the desisions.


If Microsoft, Real and Ahead depended on "word of mouth", they would be dead by now, or limited to a niche market

Quote
As for MS. Real. Ahead etc.. i don`t trust them a bit.


It's not your trust they are after.

CD24

Reply #19 –
 you know where i was going.

CD24

Reply #20 –
I'd say they're not spreading "lies," but a cleverly spun truth. Here is what the original link says:
Quote
or new high resolution CD24, fast becoming the new standard for archiving and transferring high-res. audio files to the mastering room.

... and ISO9660 CD-Rs have been the prevailing standard for "archiving and transferring high-res. files" for a while now, have they not? 

    - M.

CD24

Reply #21 –
To me, it seems odd to call their "format" "CD24," because it appears that the AIFF files burned to the CD are not necessarily 24-bit, but can be 16- or 20-bit just as well.