Forums | MacLife

Ribtorus · 2003-05-15 2:05 pm

No, not The Michael Palin series, or a topic about tearing up sweaters, but a question for you high-performance types.

What sort of ripping speeds can I expect from a 54x CDrom (or similarly speedy drive) and a fast processor?

Right now I get a peak speed of 11.5x and an average rate of 8x with a 12x max CD-R (Plextor PXR 412C) with MusicMatch Jukebox and a 700MHz Celeron.

Sumarizing my tests, I got;

56 min audio CD to 128K MP3 @ 7 min 3 sec
56 min audio CD to wav @ 6 min 35 sec
56 min audio CD to 256k MP3 @ 7 min 46 sec

This gives me an average of 8x

What sorts of times could I expect with a 2+ GHz AMD or Pentium.

Has anyone experienced jitter with fast CD ripping, or made use of the jitter correction feature on some ripping software?

Has anyone noticed any differences in audio quality based strictly on rip speed?

I'd run my own tests but my faster workstations are unavailable to me for quite some time, they don't have Windows installed and they all have slow CD drives.

dv · 2003-05-16 9:43 am

Well, my 52x CD-ROM, 16x DVD (40x CD read) and 40x Read CD-RW never pump past 12x, but my CPU can encode a WAV file at 50x easily.

I think older CD-ROMs have seperate DAE speeds in the 8-10x range. Newer ones are supposed to have fixed that.

As long as you have DMA turned on, you are getting as fast as you can.

Bat · 2003-05-16 10:14 am

The latest burners seem to be heck on plinths for DAE- the May Maximum PC shows an MSI 52/24/52x CD-RW ripping over 70 minutes of audio flawlessly in 2:05... "Our Art Director, Natalie Jeday, can hold her breath longer than it takes the MSI burner to rip a 70-minute plus CD. We really do live in an age of miracles."

Looks like burners can read, including ripping, more precisely than other drive types. Makes sense.

Recently I've begun considering a new burner... I'm patient, but when drives can burn a 700MB disc in a little over 2 minutes for under $50, the 13-17 minutes it takes my 8/4/32A Plextor begins to beg for consignment to another machine.

I know of some of the concerns about quality, jitter control etc, from reading, but at my speeds and lack of ripping experience, they aren't fresh in mind, and I can't speak to them from personal experience.

Eric Olthwaite

Ribtorus · 2003-05-16 5:31 pm

I guess for ripping there is no substitute for a quality optical drive and a fast processor. There doesn't seem to be much point in speeding up one without speeding up the other.

Thanks for the input.

test · 2003-05-17 11:52 am

I'll second the motion for fast processors. My room-mate uses a 2 Ghz P4 with 256 Mb of RAM and a badly fragemented hard-drive with 8-9 GB of free space to back up his DVDs. He can rip one to SVCD in less than 3 hours. My 500 Mhz G4 with 512 MB and 20+ GB of free space on a scratch drive takes 22-24 hours to do the same thing. It seems the megahertz myth is no myth - 4 times the clock speed and half the RAM and disk space and the XP box is still 7-8 times faster than a G4. Kinda sucks.

Odin · 2003-05-17 1:20 pm

Ripping just needs a fast CD-ROM.. its the encoding that'll get ya with a slow cpu wink

Unfortunately for me, I'm stuck the otherway around.. I have very poor rip speeds from my Toshiba DVD (DVD-ROMs generally have very poor DAE speeds, and my OLD cdrw is just plain slow) but my Athlon 2ghz encodes rediculously fast.. It took about 3-4 hours to encode almost 3 days of high bitrate mp3s to ogg, IIRC. That was a while ago, though, so I don't have more exact numbers.

So get a nice cd drive and a nice cpu, and you'll be in heaven smile

Forums | MacLife

#1 2003-05-15 2:05 pm

Ripping Yarns!

#2 2003-05-16 9:43 am

Re: Ripping Yarns!

#3 2003-05-16 10:14 am

Re: Ripping Yarns!

#4 2003-05-16 5:31 pm

Re: Ripping Yarns!

#5 2003-05-17 11:52 am

Re: Ripping Yarns!

#6 2003-05-17 1:20 pm

Re: Ripping Yarns!

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