What's the best way to rip CDs to a Mac?

[Speed Racer]

XLD is fine, but I much prefer using dBpoweramp. Sure, it costs $39, but it's with it as far as I am concerned.

[Speed Racer]

22 minutes ago, audiventory said:

Checksum database filled by secondary results (not original record) with unknown error probability. So it can't be used for checking of ripping quality.

 

Sure it can. If the checksum database has an entry that is incorrect, it become obvious fairly quickly. If a variety of systems and a variety of drives consistently generate the same checksum from a large number of pressings of the same source CD, you can be confident that the checksum is correct.

 

Suggesting anything else is fear mongering or an attempt to sell something.

[Speed Racer]

AccurateRip with dBpoweramp works very well. It's not perfect but then nothing is. All I see is someone trying to undermine a solution that competes with their own product. It doesn't look good.....

[Speed Racer]

Your "method" is not better than what AccurateRip offers. Sorry.

[Speed Racer]

I don't even know what you are talking about now.

 

All I know is that dBpoweramp with AccurateRip works perfect for me. I am confident that all the CDs I have ripped using dBpoweramp with AccurateRip are bit perfect.

[Speed Racer]

You know, with every post you make, it becomes more and more certain that I will never buy any of your products...

 

I am confident that my rips are bit perfect rips of the CDs in consumers hands. Since I can't possibly get access to the original tracks, that is all I can ask for from my ripping solution.

[Speed Racer]

The best way is the way that gets you fast and accurate rips easily and consistently.

 

You are hung up on matching the the original audio file. Well, there is no way to do that considering the original audio file is not available to the public. Only the copies of that file on the CDs released to the public are available. So a checksum database is an ideal solution.

 

I am out after this post. You are only looking at this from the perspective of what your product does so you are a completely biased source and are wasting my and everyone else's time...

[Speed Racer]

Just now, audiventory said:

 

It don't guarantee that CD ripped correctly. Because original content is unknown.

 

Let's consider example:

1. CD ripper 1 don't found error.

2. CD ripper 2 don't found error.

3. There are different check sums.

 

That is probaility of undetected error for each ripper after several stages of error detection during CD ripping seance?

 

OMG, give it a rest......

 

Original content is NEVER known. All you have are the CDs out in the real world. The AccurateRip database has checksums from these CDs. whether or not the ripper generates errors is irrelevant. What matters is the checksum from thousands of rips. The odds of the same error happening over and over again across thousands of CDs across thousands of systems with hundreds of CD readers is nil. 

[Speed Racer]

2 minutes ago, audiventory said:

 

Post was updated. Check question at the end of the post.

 

Who cares? It's the same answer. You are wasting everyones time with this sideshow of yours that no one cares about.

[Speed Racer]

Just now, audiventory said:

 

Sales are not matter here.

But I can't understand logic: "We don't care about exact CD rip. But we want check CD rip by non-100% database for sureness".

 

Wow. The checksum database is a far better way to rip with confidence than ANY methods you have suggested.

[Speed Racer]

This is a waste of time. You are being pedantic.

[Speed Racer]

I've worked software developers my entire adult life. Writing good or even great software does not mean the writer understands anything about the real world situations the software is used in. In this case, Yuri does not understand what works best for most people in most situations. He is focused on outlier cases that don't matter to 99.99% of the people using rippers.

[Speed Racer]

19 minutes ago, William said:

I spent days and weeks some years ago to find the best way to rip CD's to a Mac.

 

If " best " means for you as it means for me : an exact copy, error free, with all the bits at their right place, you could export your CD as a DDP. 

 

I used DDP Creator (Pro) from Sonoris to export all my CDs to my Mac.

Result is perfect.

 

There are, however, some drawbacks : 

- CD is exported as a folder containing specific files. Music tracks are in a single file " IMAGE.DAT ". You cannot see the separates tracks anymore.

- You need a player that can read DDP. I use soundBlade SE (wich plays AIFF & FLAC files from dowloaded music too). DDP Creator (Pro) can of course read DDP.

- Basic metadata. I don't really care, but important for others.

 

If these points are not a problem for you, here is the best rip possible.

 

William

 

I fail to see how this method is better than using something like dBpoweramp with AccurateRip. In fact, it has the major draw backs of leaving you without metadata and no individual track files. 

[Speed Racer]

There are other ways to combine tracks, or whole albums, that you can do on a case by case basis.

[Speed Racer]

19 minutes ago, Ralf11 said:

how does noise in the power supply affect the transfer of any bit on the CD to that bit onto the HDD or SSD?

 

It doesn't affect the data. The idea that power supply choices can affect digital data copied from a CD and stored in a digital format  file has no technical merit.  

[Speed Racer]

14 minutes ago, William said:

 

I haven't said it was better than any other software in the market.
I just said the rip was perfect, everytime.  That's what I meant by " best ".

 

No metadata and no individual tracks is a major drawback for you, simply because we don't have the same listening needs.

 

I would posit that DDP Creator acting as a CD ripper has unknown accuracy based on this from the DDP Creator manual:

 

DDP Creator depends on the error-checking capabilities of the computer’s optical drive to ensure that the audio data is read reliably with no errors. 

 

Since the computer's optical drive is never perfect and DDP Creator is not comparing against a known good master in any way, the rip may or may not be perfect and there is no way to know if it is or is not.

 

This is exactly why AccurateRip is such a good idea. Products that use AccurateRip can promise perfect rips while products that don't, cannot.

[Speed Racer]

2 hours ago, Ralf11 said:

BTW, how do we know that the CD is bit for bit perfect w.r.t. a master?

 

Without access to the master, you don't. You can only assume that the record label's disc maker has done his job and verified the CDs they produce match the master they were given.

 

After the fact, all we can do is compare the checksums from tracks we rip from CDs to a crowd sourced database (e.g., AccurateRip).

[Speed Racer]

But your assumptions are incorrect. You have used mathematics in the wrong way to fit your narrative.

 

A CD drive has error detection and correction. If there is a error detected, it may or may not be corrected. Errors may not be detected. Without something known to compare to, you have no idea how accurate your rip is.

 

If you have a CD that is in the AccurateRip database, the checksum is going to be 100% percent correct based on a huge number of tests. The vast majority of CDs people have are going to be in the AccurateRip database. I have yet to come across a CD that is not in the database. If the checksums don't match, the CD is reread until they do or the retry limits is reached.

 

So, without AccurateRip, the math is:

 

CEDPwod=CEDPcd

 

With AccurateRip and no database entry the math is:

 

CEDPwod=CEDPcd

 

With AccurateRip and a database entry, and conformation the rip is accurate, the math is:

 

CEDP = 100%

 

In other words, AccurateRip is a binary. The only way the 100% figure is not reached is if the CD is bad and the data cannot be read or the CD drive is bad and it cannot read the data properly.

 

 

[Speed Racer]

2 hours ago, audiventory said:

 

No doubts.

 

Not when checksums match, no. Well, there is a is one in 2^128 chance that a combination of bit errors could match the checksum. So, no, no doubts.....

[Speed Racer]

1 minute ago, audiventory said:

 

What is 2^128?

 

Oh, I was assuming AccurateRip is using an MD5 checksum and MD5 is 128 bits.....

[Speed Racer]

21 minutes ago, audiventory said:

And how the database give correct error detection probability of original studio content = 100%?

 

Let's show us calculations in details.

 

We have gone over this multiple times. There is no way to know if the CDs made by the disc maker match the master. That test happens, or should happen, before the CDs are pressed in mass quantities. All we can do is work with enough released CDs to have confidence in the checksums in the AccurateRip database.

 

You seem to be doubting the validity of a checksum database. Using checksums is the most common way to verify the data in a file is accurate for mission critical firmware upgrades. They work and work well.

 

How many times does the same track across thousands of CDs need to generate the same checksum before you can have confidence in that checksum? I don't need to do probability calculations.  

Your clearly have a bias against AccurateRip and it is coloring your arguments. You are being ridiculous.

 

 

[Speed Racer]

25 minutes ago, audiventory said:

I was expected math.

 

How can you do math with unknown variables? How likely is 6,234,560 equal to X when X is unknown?

[Speed Racer]

15 minutes ago, Ralf11 said:

when you turn on the "Use Error Correction" check box in iTunes, what exactly does it do?

 

does it use checksum?

 

or does it do 2 reads and see if each bit matches, then do additional reads if they do not match?

 

It doesn't use checksums. Beyond that, I am not sure what that option actually does.

[Speed Racer]

18 minutes ago, monteverdi said:

I need a recommendation for an external optical drive specifically for ripping to use with my last years MacBook Pro (ideally with USB-C connectivity without adapter).

My searches found a lot of discontinued models and mostly reviews about blue-ray performance. Should as accurate as possible and fast reading speed at the same time because I find ripping boring!

 

I have used this drive for quite  a while and it is excellent!

 

https://eshop.macsales.com/item/OWC/MR3UBDRW16/

 

You would have to buy a USB 3.0 to USB C cable.