XXHighEnd

After ripping with EAC it is possible to remove Glitch (bugs) from the rip. It is only possible to do this song by song so it will take long time.
Do i have to remove the Glitch to get the best sound?  (is it possible to hear?)

Tore

Why are you getting glitches?   I never get them.  Well, except when I had the "Overread" button 'checked' It would say read error right at the end but I wouldn't hear anything where it said it might be a glitch... after unchecking "Overread" I get no glitches.   I've used 4 different types of burners... at the moment a new Pioneer (I heard rumor teh new plextors are not special anymore... look like the pioneers anyway? any truth to that?)

Perhaps your drive is going out?  (after some 1500 rips and a number of burns my plextor started showing excessive errors and I felt it had become unreliable).

A literlal "glitch" is a number of bytes repeating the same value while they actuallly should be different each. Removing that afterwards is always faking things, and most probably more wrongish things will be in the rip.
You just need to avoid them ...

You could say that all anomalies are audible. Pointing them out as wrong is another thing.

Thanks!
Is it possible to avoid the Glitch?  I use a little used Plextor Premium cd-drive and i use the C2 correction on it. My cd`s is ripped with no problems but EAC is finding plenty of Glitch after the rip

I remember reading somewhere (sorry I don't have the source) that EAC's "glitch" removal is simply scanning the waveform to detect "pops" and "clicks". Scanning electronica music, it would have a field day (find lots of "glitches"). It's just guessing. Not very reliable. I wouldn't use it. But that's just MHO. Take it FWIW.

It could be a matter of a wrong drive (read : not properly reading), or wrong EAC settings.
In what time can you usually rip a CD ? (naming the "factor" like 5x is informative enough)

When it is well over 4x you can bet your settings are wrong. So, no matter the native speed of the drive, you should be around 3x - 4x max.
An important setting is the "cache". So, the drive is NOT allowed to cache.

Also, be careful about that glitch detection. I never tried it, but made one of my own. If it works as should, it must ignore "glitches" at the beginning - but more importantly at the end of a track. Otherwise the reported glitches are not real.
Btw, to my own experience when the rip process is prone to creating glitches (but mind the meaning of the phenomenon, which IMO is only 1) it will be audible throughout the CD several times. Mind you, at that stage thousands of samples got "stuck" and keep in mind there are 44100 in a second. A glitch can obviously be 50 samples long as well, but you'll not be able to perceive it as a glitch. But, when many are in there (like sever times per second the 50 sample glitch) it will sure influence sound. When you have 10 50 sample glitches on a whole album, there is now way it will influence sound, and the only thing it could to is create audible small clicks.

I hope it is clear a bit ?
Peter

True. WaveLab has similar too. That's why I created my own, as "intelligently" as possible. In its current stage it can be rather infinitly extended.
I was planning to stuff it into XX but actually forgot about it ...

I have some pretty wild electronic music stuff and never ran into reported glitches... are the glitches throughout the cd? If settings on EAC are correct, I'd bet it was the DVD drive going out... or well,
I run pretty clean machines, not a lot of stuff going on in the background (never any auto updates, virus scanners, programs...the like...)... could be that?

In fact I am 100% sure things like that *will* influence. Also, and sadly, this is -then- something EAC will *not* report upon.
I once used a drive a couple of days to rip 40 CDs or so, and after that, at listening, those rips were full of glitches. Now poper glicth detection is very handy, because it gives you insight in what happens at a rerip. It could be a matter of trying that particulair track over and over until you have a good rip. Since my glitch detection also reports where the glitches are, it was clear to me -in that situation- that the glitches could occur at various different places at re-ripping. My conclusion : it's interrupts from the system causing them. But : in the end it was the drive inducing for it. Somehow ...

One other thing I noticed, is that a rip can be rather full of "zero" values. Thus, right in between, say, 1Volt values suddenly 0Volt. Your DAC would loudly crack on that. Now :

What I understood (but maybe I'm wrong) is that a 0 value for a DAC implies "do nothing". Or IOW, repeat the last received value (1V in my example). This would be a typicle example of influencing the sound throughout. This would be a "full of glicthes" situation, but one sample long only (only one sample would be repeated).

So, that this can happen at EAC ripping is for sure, but what I'm not sure about is what the DAC does with it. I mean, when the DAC has to step from the smallest 00000000 00000001 value to 00000000 00000000 the "1" value would be repeated also ? That looks wrong to me ...

The drives "cache" is off but the C2 is on. This gives up to 18x speed for a song and up to 11x speed for a album. When i turn of the drives C2 correction i get half of this speeds. I will try to turn of the C2 correction to see if that gives less glitch.

The C2 is okay. But the 11x seems way to high to me. Possibly certain drives can do it properly, but since you have the glitches ...

Btw, are they audible ?

I have not got my Dac yet so i can`t say if the glitch is audible. Can`t EAC find any glitch on your ripping? Some few album of mine have no glitch. How can i get the ripping speed down?

Never tried it :)


I already thought you might take my words like that. But no ... it should be so that EAC just doesn't "want" to go faster, or else something is wrong. Compare it with "burst" versus secure ripping. "Burst" would be super fast, but super wrong. Just as an example !

Under EAC > Drive Options > Offset/Speed you'll find an option to select speed selection.  Also make sure you have checked "Allow speed reduction during extraction"  Unfortunately for me, my new pioneer DVR-2810 only gives me two options for speed selection ...40Xs and Actual :/ ... When I rip in Secure mode though, it rips at just over 5Xs... when I rip in Paranoid mode the rip starts at ~5Xs but continues to go up in speed until the end of the rip where it hits about 20Xs.  I recently made 4 rips of the same album using various settings; only the two rips that I had checked "Overread into read in and read out" caused an error right at the end of the rip... EAC then gives you an option to listen and remove the "glitch" but I never heard any music/(only silence) when I pushed play.

I'm still needing to listen and go back and forth between secure/paranoid, but I thought I was giving the nod to paranoid (I listen to beginning, middle and end songs when comparing)... I don't know, I'd prolly be safer going with secure, not sure there was a difference (maybe think paranoid sounded more open/there?).  need more time.

I have done some testing now. Ripping with and without C2, with internal and external haddisk, with my internal Plextor Premium cd-drive and NEC dvd-drive. I use a 3 year old Dell pc. I belief in that all the glitch was because off my external WE harddisk and USB cabel.
The fastest combination was with internel harddisk, Plextor drive and C2. The speed was 12,9X.
The slowest combination was with external harddisk, NEC drive without C2.

To my surprice all the combinations gave exactly the same numbers of glitch. The cd i used gave over 5000 glitch on track 1, over 3000 glitch on track 2 and over 2000 glitch on track 3. Some cd`s gives over 200 glitch on a track and some cd`s have no glitch at all.

Can the reason to the glitch be how the cd pressing is done?

Of course it can. But I presume you tested several CDs and just can't come up with a solution.

Is there any change you can upload such a track so I can look at it ? Never mind any "police". I'll take responsibility. But maybe send the links to it by PM.

?

The test was done with only one CD. Earlier i have seen how the number of glitch vary. Under the spinning in the drive it came some noise from the test cd. Not round??
Tomorrow i will send you a track.

I have burned the test-CD and then ripped the copy to see if the copy gives less glitch. But no, this gives the same number of glitch so it is nothing wrong with the original CD