I didn’t know that Did you guys know that?


Looking through old Absolute Sound issues, I found this reply from Robert Harley to a letter:

"...Among those who have actually listened to CDs and CD-Rs copied from those CDs, the debate was settled long ago - CD-Rs sound better."

Is that a fact?
phaelon
It does seem to me to be technically plausible that many of these reports could be true (and I would certainly expect Learsfool's perceptions to be accurate), although I would expect the magnitude and character of the differences to be highly dependent on the design of the particular player that is being used (and probably also on the particular media, burner, and burn speed that are used).

From this paper by Steve Nugent of Empirical Audio:
3. Jitter from the pits on a CD:
These are the pits in the CD media that represent the recorded data. Variation in the spacing of these pits result in jitter when reading the data. Commercially CD's created from a glass-master generally have more variation in the locations of the pits than a CD-R written at 1X speed on a good CD-R writer. Even though most modern CD players have buffering of the data to create some tolerance to this jitter, there is usually a PLL (Phase-locked-loop) involved, which is still somewhat susceptible to jitter. To determine if your player is susceptible, it is a simple experiment to re-write or "clone" a CD and then listen for playback differences from the commercial version. For newer players that completely buffer the data at high-speed from a CDROM reader to a memory buffer, this jitter is not an issue.
And some excerpts from this thread:
07-19-11: Shadorne
If a disc wobbles while it spins then this may cause cyclical adjustments to the pick up laser servo and these repetitive draws on power may induce variations in the clock through the power supply.
07-20-11: Kirkus
CD players, transports, and DACs are a menagerie of true mixed-signal design problems, and there are a lot of different noises sources living in close proximity with suceptible circuit nodes. One oft-overlooked source is crosstalk from the disc servomechanism into other parts of the machine . . . analog circuitry, S/PDIF transmitters, PLL clock, etc., which can be dependent on the condition of the disc.... One would be suprised at some of the nasty things that sometimes come up out of the noise floor when the focus and tracking servos suddenly have to work really hard to read the disc.
Best regards,
-- Al
Amazing!!! you can quote a guy like Harley and get responses, but woe be unto anyone that dare mention anyone from stereo review. would be funny, if not so sad.
So if I have a CD, rip it to my computer and then make a CDR, then the CDR sounds better than the original CD. Does that mean if I then take the CDR, rip it to the computer and then make another CDR, does the 2nd generation CDR sound even better than the first generation CDR?

All I know is that everything matters, anything is possible and we don't fully understand audio reproduction (at least at relativistic speeds and temperatures).