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Author Topic: Secure Ripping  (Read 11484 times)
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AUDIODIDAKT
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« on: November 13, 2010, 11:05:11 am »

Today I bought an album,

And 2 problems during ripping are there at once, from which I thought it could be usefull to post them on the forum.

The first is about SECURE ripping with EAC,
Its important to use the "test & copy" function in EAC, meaning, to make use of CRC-calculations,
I had to rip the album TWICE, to get it right.
If you do not use test and copy, about 2-3 albums out of 50 are not SECURE, they have not the same CRC-calculations after test and copy.

Second problem is about albums that have pre-emphasis (not so many are)
While your rip is 100% secure it does have pre-emphasis on it, there is no problem if you just burn it and play it on a regular cd-player.
But this is NOT the case with PC-playback, the album needs to be de-emphasized, which is a lossy process by itself. (SOX can do this for eg.)
Thats why it is important to keep your logs and cue-sheets, because then you can recognize this by the "flag" in the cue sheet.
http://blowfish.be/eac/Rip/rip12-preemph.html

Roy
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AUDIODIDAKT
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« Reply #1 on: November 13, 2010, 01:42:22 pm »

Peter,

Is it possible to implement something like sox as a pre-process on those albums with pre-emphasis. (recognized by flags in the cue sheet)
sox is commandline exe tool, very fast and available here

Just used it to de-emphasize an album, I think it sounds better when using sox then play it as "original".

Let me know what you think.

 Happy
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(Sept 30, 2010)                                                
W7 Ultimate x64 Tweaked/60 GB SSD OCZ Vertex (1.50)/Gigabyte GA-EP45-EXTREME/Intel Q9550 2.83Ghz/OZC Reaper 2x2GB/
Esi Juli@ soundcard (KS)(x2v-v0_978)(Tweaked Coaxial)/Nvidea Geforce 9800 GTX+/750 Watt Zalman ZM-750-HP/100 MB Fiber-Optical Internet/
(XXHighEnd 0.9z-2)
#4Engine, Special Mode, 48 samples, SFS 12MB, DAP, Scheme=3, Q1=1, Q2/Q3/Q4/Q5=30,30,0,0, PlayerPrio=Low, ThreadPrio=Realtime
x-Allow Format Change, x-Stop Services, x-Copy to XX-drive by Standard, x-Start Engine3 During Conversion
PeterSt
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« Reply #2 on: November 13, 2010, 02:15:33 pm »

It wouldn't work on albums without a cue sheet (and 99% of my albums don't have that -> no reason to).

But if something in the file header denotes it, it's another story ...
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