What CD drive for ripping CDs?

[garym]

Does dbpoweramp also detects pre-amphasis present in the subcode? That would be quite interesting.

I have zero understanding of what dbpoweramp does with regard to detecting. I'm at the mercy of the software. In the 8,000 CDs I have, I've yet to discover any rips that seem to have a pre-emphasis problem. But that doesn't mean some problems are lurking.

[sodface]

I submitted an issue for cyanrip:

https://github.com/cyanreg/cyanrip/issues/42

The developer replied:

Emphasis is detected and identified, it's visible in the logs.
Currently, it's not wired up to automatically deemphasise, though it's easy enough to support, just haven't had any CDs that require it yet.
I'll implement it.

[sodface]

A bit off the topic for the OP at this point, but I'm intrigued by this pre-emphasis topic and I'm still reading about it, stumbled on an old topic from this forum so I thought I'd drop the link:

https://forums.slimdevices.com/forum/user-forums/audiophiles/34609-cd-red-book-de-emphasis

[streifenleopard]

Ok, so nobody bothers about the type of CD drive anymore. Do you clean your drive every now and then (ie the laser)?

[garym]

No and no.

[sodface]

Well, since the topic got bumped again, I'll drop this off topic link:

https://archive.org/details/quake-1996.-7z

I discovered in my googling that some game soundtracks had pre-emphasis. the orginal Quake being one of them (by Trent Reznor aka Nine Inch Nails). Above link is for the page, scroll down and on the right is the 7z of the bin/cue disk image. Here's a direct link:

https://archive.org/download/quake-1996.-7z/Quake%20%5B1996%5D.7z

Example from the .toc file:

// Track 2
TRACK AUDIO
NO COPY
PRE_EMPHASIS
TWO_CHANNEL_AUDIO
SILENCE 00:02:00
FILE "Quake [1996].bin" #25692160 0 05:08:38
START 00:02:00

My intent was to burn this and then re-rip it for pre-emphasis testing. Haven't got much further than the download step...

[sodface]

Apologies again to the OP and the forum for prattling on here but I dug out my ASUS SDRW-08U7M-U USB drive and burned the above mentioned Quake CD. I then ripped a track from it with cyanrip, which did detect the preemphasis:

Track 2 ripped and encoded successfully!
    File(s):
        Quake [FLAC]/02 - Quake Theme.flac
    Metadata:
        mbid: 1d6c2de9-4612-4f00-88e4-a1ad219298a7
        title: Quake Theme
        artist: Trent Reznor and Nine Inch Nails
        comment: cyanrip 0.8.1
        track: 2
        tracktotal: 11
        date: 1996-06-22
        disc_mcn: 0000000000000
        discid: oWAGWCDCO.dMpqTyR7f9LEUFVLQ-
        cddb: 9d0e790b
        release_id: 046d66a3-ec8f-4d24-873f-21a11f67b0fb
        album: Quake
        barcode: 611350226660
        packaging: Digipak
        country: US
        status: Official
        album_artist: Trent Reznor and Nine Inch Nails
        totaldiscs: 1
        disc: 1
        format: Mixed Mode CD
        isrc: 000000000000
        creation_time: 2023-03-11T10:11:44
    Preemphasis:      present, deemphasis required
    Cover art:        Motion JPEG
    Duration:         00:05:08.300
    Samples:          13609260
    Frames:           23145
    Start LSN:        12695
    End LSN:          35839
    Offset end:       35840
    Accurip:          not found
    EAC CRC32:        CBF047FA
    Accurip v1:       BEEE6933
    Accurip v2:       DF9D16D5
    Accurip v1 450:   DAFDEE39

Then I ran the resulting flac through ffmpeg to apply the deemphasis:

ffmpeg -i 02-QuakeTheme_PREEMPHASIS.flac -filter_complex "aemphasis=mode=reproduction:type=cd" -sample_fmt s16 02-QuakeTheme_DEEMPHASIS.flac

I think the difference is most noticeable in the first part of the track so I split off the first 11s of each to create sample tracks for comparison:

sox 02-QuakeTheme_PREEMPHASIS.flac 02-QuakeTheme_PREEMPHASIS_11s.flac trim 0 11
sox 02-QuakeTheme_DEEMPHASIS.flac 02-QuakeTheme_DEEMPHASIS_11s.flac trim 0 11

You can get them here:

http://sodface.com/repo/index/misc/preemph_test

[sodface]

Automatic deemphasis was added to cyanrip. I updated the test files at the above link to include the original 11s sample rip with preemphasis and then several versions with deemphasis applied by different programs, cdda2wav, sox, and cyanrip (ffmpeg).

[cfuttrup]

Hi all do you use a standard CD drive maybe left over from times when these things still made sense or are there any audiophile drives that you have purchased particularly for ripping?
I have an external Samsung drive that was Eur 25 some ten years ago...

I am using a standard PC DVD-drive for ripping the CD's that I buy. I purchased a Lenovo Laptop PC and when ordering, I chose to include an external DVD drive in the order. It's a Lenovo ThinkPad UltraSlim DVD Burner. I don't think it's anything special, but it has worked without flaws until now. No need to clean anything inside (yet). I am ripping with EAC (Exact Audio Copy) and the DVD drive spins up to double speed, sometimes triple speed and more, depending on the quality of the CD media. The rips are normally 99.9 - 100 percent accurate (checked with the AccurateRip database).

[EDIT] Over time, as you rip many CD's, the drive will eventually wear out and you start getting lower accuracy in your rips. You can try to clean it (I never tried), but otherwise the only way is to replace the drive with a new one.

Cheers,
Claus