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Le 03/07/2014 11:36, Basil Chupin a écrit :
Well, not really debatable. The sound from CDs does not have the full frequency range produced by vinyls. Don't take my word, check for yourself.
the two systems are very different. What limits the cd is frequency of digitalisation (sorry forget the english word), in vinyls it's the needle size and cinetic
Absolutely correct. In fact, the limits in vinyls depends a lot on your hardware: the frequency response of the needle, and the conversion curve of the pickup assembly, which is not linear neither in amplitude nor frequency. The pre-amplifier could compensate. Then you also have to consider that the arm of the pickup could be pivoting from a holding point (and the radius differed on each model), or on a perpendicular tracking system, quite expensive: the result was that the response varied from the start of the record to the end (even on perpendicular arm, because the record maker could have taken in consideration a standard pivoting arm). Then the pickup arm had to compensate for weight, and... I don't remember the name, even less in English. Related to the centrifuge force. You actually needed lab equipment to properly calibrate those things. Then there was the "RIAA equalization". Exactly implementing this is close to impossible, you only approximate it as much as the expertise of the designer allows, and the available money allows. Analog filters are complex in math, and more so in real hardware. All that is distortion, different from machine to machine, and from record to record. The vinyls some times were "undulated", the plastic could bend, depending on storage and quality. Then there is dust, unavoidable. There is wear, also unavoidable: it could be reduced a lot (proportionally to money spent). Nowdays you may have a laser "needle": there is no actual wear, but the laser may instead pick imperfections on the surface that previously could not be detected. I guess that they employ analog filtering - don't tell me they employ digital filters, because that means that they digitize the signal and work on it as on a CD. It would kill all the "enjoyment" of a vinyl. That is, even on silent periods, you could hear the vinyl. And to me, this kills it. What about CD's? Well, they have limitations, but if the thing is properly and inexpensively implemented, the signal is always the same for everybody, no distortion whatsoever, no noise. It does not get better, but neither worse. Its up now to the amplifier. So... well, with CD's, for a reasonable amount of money, I can listen properly to music at home.
Another canard is that records wear out by being played, play them on a properly set up turntable and it will not happen.
Sounds about right :-) .
only laser turntable (not cd, but laser needle) do not wear vinyls
True. And these laser things will have a completely different response curve, meaning that a standard record player pre-amplifier will not properly compensate. I'm almost sure that the RIAA equalization has to be readjusted. (good and old vinyl players did not include the preamplifier, this was external, because the client usually chose his own pickup head, that needed a different preamplifier, if good HiFI was wanted).
how to best record vinyl records and what has to be done to make those vinyls to be in the best condition in order to do so: clean the vinyls using wood working glue, then use Audacity to record (and edit) the contents of the vinyls so recorded for burning to CDs.
highly depends of the audio input quality also
don't forget good turntables where extremely expensive 30 years ago (don't know now),
Probably even more: no mass production.
so most old vinyls are weared
Indeed. I would like to convert my collection to digital, but I don't know what to use and how expensive it is. In my case, I also have a lot of 78 RPM disks I'd like to convert. And I would like to do that in Linux. How good are these "analog-to-digital" vinyl players? Is the digitizing done on the player or the computer? Software requirement? Ie, I do not want to do it in Windows. - -- Cheers, Carlos E. R. (from 13.1 x86_64 "Bottle" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlO1PYcACgkQtTMYHG2NR9V8jwCffrnUJ7ffOYFKnRF/6giZ/7F1 jjwAn29yNf4oJKqsLTR5bib9Saw/BUN1 =asWR -----END PGP SIGNATURE-----