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EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #50
I don't know about the search function of XP cause I haven't used it in months, but there are many programs that allow you to search in files for a given string. Try Agent Ransack, or the fantastic Total Commander for example.
Of course this is a lot of handwork, but assuming that there is no program to automatically care for pre-emphasis CD's it's a viable solution .
Blubb

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #51
is there any utility program that can perform a earch on all my CUE sheets to check if the FLAGS PRE appear?


Maybe I'm missing something obvious, but can't you just do a pattern search on the CUE files? (i.e. grep -r "FLAGS*PRE" *)
Is your perfect hearing worth <$200? -- USE EAR PLUGS

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #52
total commander rules!

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #53
Quote
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Now it would be nice to have a free tool that can properly apply de-emphasis on WAVs securely ripped by EAC.[{POST_SNAPBACK}][/a]
That would be the ideal solution.  I definitely prefer EAC because of its precision and error detection abilities.[a href="index.php?act=findpost&pid=338556"][{POST_SNAPBACK}][/a]

This command line sound file processor, [a href="http://sox.sourceforge.net/]Sox[/url] can do de-emphasis. Its standalone usage to do this is just "sox infile.wav outfile.wav deemph" If you pop sox.exe in Eac's directory it should be possible to pipe Eac's output through Sox on the way to the encoder, something like "commandline encoder: sox.exe - - deemph | lame --preset standard - outfile.mp3" -but it will take some fiddling to find the exact syntax.


I've tried Sox for de-emphasis... I burned the resulting WAVE files to a CD, then compared the CD to the original, pre-emphasis coded CD in my Oppo player. Hmmm.... anybody tried that? Do you think the reverse EQ curve applied by Sox is perfect? I had the feeling that the sound was better on the original CD, kind of muffled on the de-emphased CD.

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #54
I've tried Sox for de-emphasis... I burned the resulting WAVE files to a CD, then compared the CD to the original, pre-emphasis coded CD in my Oppo player. Hmmm.... anybody tried that? Do you think the reverse EQ curve applied by Sox is perfect? I had the feeling that the sound was better on the original CD, kind of muffled on the de-emphased CD.

I haven't tried it myself (I only have a few discs with PRE, The Wall and some Sabbath Castles), but in general my SoXed files sound a bit muddy.  From what I've read, you're not alone.  Gee, do I have to install iTunes?  Sigh.

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #55

I've tried Sox for de-emphasis... I burned the resulting WAVE files to a CD, then compared the CD to the original, pre-emphasis coded CD in my Oppo player. Hmmm.... anybody tried that? Do you think the reverse EQ curve applied by Sox is perfect? I had the feeling that the sound was better on the original CD, kind of muffled on the de-emphased CD.

I haven't tried it myself (I only have a few discs with PRE, The Wall and some Sabbath Castles), but in general my SoXed files sound a bit muddy.  From what I've read, you're not alone.  Gee, do I have to install iTunes?  Sigh.


So what CD software will give an accurate indication if the pre-emphasis bit is set or not? Correcting the EQ is easy in Audition but I don't like not being absolutely certain if it's needed. I got out the service manual on my old Sony CDP-302 and it isn't too difficult to add an LED to indicate pre-emphasis but I'd prefer not to go that route.

Thanks

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #56
so, what is the best way for de-emphasis process?

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #57
so, what is the best way for de-emphasis process?


I posted these numbers in another thread 2-August-08 and am happy with them. This is for CoolEdit Pro 2.1 or Adobe Audition using the FFT. Select "logarithmic" to see the scale in dB rather than percent. Check "Spline Curves" and "Log Scale". FFT size 8192 and Blackman windowing. I believe these last 2 settings are defaults.

21.53 Hz 0dB
1241.7 Hz 0dB
1552.49 Hz 0dB
2386.17Hz -0.6dB
3330.31 Hz -2.4dB
6228.9Hz -6.3dB
8097.04 Hz -8.4dB
10851 Hz -9.6dB
22050 Hz -9.9dB

I then saved this filter as "CD De-Emphasis"

You can see the response by creating a sweep of 1 kHz to 22 kHz and then apply the filter. It mimics the analog filter nicely.


EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #58
I had completely forgotten that I posted this !

Anyway, the best way to copy such a CD is to use EAC's wave files, and set the emphasis flag to "yes" on the copy. This way, the copy will be faithful to the original.

I checked four programs
EAC ( http://www.exactaudiocopy.de ) and Feurio ( http://www.feurio.de ) allow to set the emphasis flag to "yes" on a copy.
Nero and Plextools Pro don't.

sorry where is this option
in eac i can 't find it

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #59
There is no option in EAC.  The information will automatically be included in a CUE sheet if one is generated.
Is 24-bit/192kHz good enough for your lo-fi vinyl, or do you need 32/384?

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #60
There is no option in EAC.  The information will automatically be included in a CUE sheet if one is generated.

thanks so i have to edit the cue sheet?

does nero make perfect audio copy(outside offset)? because i use it to burn my original cd , and i would like they sound like the original

EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #61
Since this thread is resurrected already, I might even quote a three-year old posting:

Attention: It's often said that only recordings mastered before 1986 use pre-emphasis --> definitely wrong !!!
Some labels do use it just up to date (but not regularily) e.g. Erato and the Swedish label BIS (on almost every second CD) !!!

In short (I can only tell about classical, though) - which labels are suspicious to use it more frequently than others?


When it comes to classical music, some budget labels are just buying the rights to an old recording, and the release might just be a copy of the old master with the same pre-emphasis flag. This Bach box from 2001 consists of 160 CDs, of which I think 18 had pre-emphasis. The recordings are probably old, I might look it up if anyone cares. The box has later been repackaged and released as this 155 CD set in 2006 -- I have no idea if there is still pre-emphasis. (I would indeed not be surprised if somewhere there is a CD around, which is a reissue of a pre-emph'd CD but without the flag, i.e. wrong-sounding.)


Apart from that, I know that Swedish darkwave label Cold Meat Industry was quite eager to release pre-emph'd CDs in the nineties. I have a few of their releases.
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EAC changes the EQ [moderation: only via pre-/de-emphasis]

Reply #62
Edit: was searching up some pre-emphasis discussion, and later realized that the topic title is off mark. Oh well, sorry for that ...



Emphasis [sic!] mine:

Attention: It's often said that only recordings mastered before 1986 use pre-emphasis --> definitely wrong !!!
Some labels do use it just up to date (but not regularily) e.g. Erato and the Swedish label BIS (on almost every second CD) !!!


When it comes to classical music, some budget labels are just buying the rights to an old recording, and the release might just be a copy of the old master with the same pre-emphasis flag. This Bach box from 2001 consists of 160 CDs, of which I think 18 had pre-emphasis. The recordings are probably old, I might look it up if anyone cares.


Turns out that the organ section of that box, was Hans Fagius' recordings (83 to 89) on ... BIS! In addition, the two other pre-emph'ed CDs  in that box, seem to be BIS recordings too (based on track lengths).

So this label also sells recordings, and in doing so, spreads the disease.


(Culprits:
http://bis.se/people_info.php?pID=1623 and
http://bis.se/index.php?op=album&aID=BIS-CD-587-88
19 CDs total, not 18 as stated above.)
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