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Ultimate Audio Playback => Music Storage and convenient playback => Topic started by: AUDIODIDAKT on November 13, 2010, 11:05:11 am



Title: Secure Ripping
Post by: AUDIODIDAKT 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 (http://blowfish.be/eac/Rip/rip12-preemph.html)

Roy


Title: Re: Secure Ripping
Post by: AUDIODIDAKT 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 (http://sox.sourceforge.net/)

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.

 :)


Title: Re: Secure Ripping
Post by: PeterSt 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 ...