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Subject:
Vinyl LP sound versus CD sound
Category: Arts and Entertainment > Music Asked by: monroe22-ga List Price: $25.00 |
Posted:
17 Jul 2004 20:03 PDT
Expires: 16 Aug 2004 20:03 PDT Question ID: 375592 |
It is generally agreed among the serious listeners of classical music that the best of the now obsolete vinyl LP records had a superior tonal quality and better fidelity than any CD. Is this true, and why? (Note: all you rock fans, take a hike and don't bother commenting. You know less about music than an earthworm.) |
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Subject:
Re: Vinyl LP sound versus CD sound
Answered By: paul_b_18-ga on 18 Jul 2004 06:09 PDT Rated: |
Hi, The key to this question is the difference between a digital and an analog recording. Natural sound is by definition analog. When a CD recording is created, this analog is sound is digitized. To do this, they take a lot of snapshots of the analog sound. For a CD recording they take 44,100 snapshots in a minute. These snapshots are then converted to digital information with a certain precision. For a CD recording this precision is 16 bits which means that every one of the 44,100 snapshots needs to be converted into one of the 65,536 (2^16) possible values. You can probably see where I am going: by definition a digital recording doesn't include all the sound information. You could visualize a CD recording as a really large chest with a lot of drawers. Because the number of snapshots that are taken are not infinite (the maximum is 44,100 per minute), the process of taking snapshots results in the loss of information. Information is further lost because each of these snapshots must be made to fit in one of the 65,536 drawers of the chest. A record player which plays LP?s is strictly analog. A vinyl record has a groove carved into it that mirrors the original sound's waveform. The record player than transforms this groove to an analogue sound signal which can be fed into an amplifier. In this process, no information can be lost. No snapshots need to be taken and the sound doesn't need be converted to one of the possible 65,536 values. There basically is an infinite number of 'snapshots' and 'possible values'. Therefore vinyl recording sound richer than CD recordings (as long as you have a decent vinyl record player). Be aware that recent DVD Audio players and Super Audio CD players come closer to vinyl recordings as they have a much larger number of possible snapshots in one minute (up to 192,000) and because these snapshots can be converted to a larger number of possible values (up to 16,777,216 possible values, or 24 bit). Search strategy; Google: vinyl OR LP "better than" sound CD I hope you have enough information. If you need any more, please ask for a clarification! Thank you, paul_b_18 |
monroe22-ga
rated this answer:
Thanks paul b 18...a very helpful clarification... monroe22 |
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Subject:
Re: Vinyl LP sound versus CD sound
From: neilzero-ga on 18 Jul 2004 08:34 PDT |
IMHO = In my humble opinion, enough CD samples per second and enough drawers are used to give the vinyl a negligible advantage. The needle and cartrage used to record and to play back vinyl, both have some mechanical resonaces which add elements to the recording (a very fast vibrato) Both of these are reduced significantly by using a laser beam for both record and play back of CD and DVD. There are perhaps a dozen other factors which cause the listerer to hear less than high fidelity. The tradeoffs with these (including cost) are more important than the number of samples and drawers in most practical situations. If you prefer the vinyl sound it is clearly best for you. Neil |
Subject:
Re: Vinyl LP sound versus CD sound
From: monroe22-ga on 18 Jul 2004 16:02 PDT |
neilzero: A most interesting comment. Yes, LP equipment is indeed subject to mechanical interference, while CDs are not, other than contaminated tracks. Probably, LPs played on the best available equipment are the most satisfying, whereas CDs played on average systems are fine. As an older person whose hearing range has deteriorated, I am pleased with CD sound and lack of surface noise. My reminiscence of great LP sound is of course subjective. Regards, monroe22 |
Subject:
Re: Vinyl LP sound versus CD sound
From: agruhn-ga on 19 Jul 2004 09:28 PDT |
Also important in this discussion is the inclusion of the additional effects added by LPs that trigger the ways in which we listen to the music we hear. Primarily there's the tactile element of records (having to flip the record halfway through, larger artwork, etc..) that makes listening to vinyl more of an active event as opposed to letting music play in the background. Secondly, the addition of surface noise from use, dust, mold, etc is quite often more "true" to the music, the history of the artist, the history of the LP itself, and the connection the listener has with the particular record. - I find more truth in my highly-listened-to first pressing of "Kind of Blue" than I would in any audiophile re-release. Just some thoughts. |
Subject:
Re: Vinyl LP sound versus CD sound
From: rayljr-ga on 03 Aug 2004 10:00 PDT |
The sampling rate for CDs is 44,100 cycles/second, not per minute. This "conforms" to the fulfill the Nyquist criterion (> 40 kHz or 2x the analog frequency). However the 20 kHz "brick wall filtering" does not mean 20 kHz frequencies are faithfully reproduced. There's a lot more audio information to sample at the higher frequencies. Advantage goes to a clean vinyl record - e.g. some Technics cartridges can pick up >75 kHz & can even drive the bats bats - not possible on a CD. Higher frequency or >20 kHz ?inaudible? harmonics have been shown to affect the human sense of hearing. The ear might not pick it out in a DBT (double blind test), but the brain wave scans show there clearly is an effect. I never really trusted those DBTs anyway. ;-) So ?clean? vinyl can be advantageous or competitive for the last several octaves. That's where the nickname ?tin ears? for CD fans comes from - e.g. the cymbals played which are among the highest frequencies produced by the orchestra (or even rock band if you'd care). ;-) This vinyl advantage starts to give way even after the 1st play on any turntable, no matter how well balanced & built. After all, vinyl is a 1 on Moh's scale of hardness & diamond is a 10. If the diamond stylus never touched the vinyl surface, there wouldn't be any sound. But depending on how well implemented the turntable, stylus weight & tracking balance are implemented, this advantage will ?wear away? at certain degrees. But for lower frequencies, the advantages for the CD mentioned above in this thread lean to the CD. Plus, on a CD the laser never touches or affects the source disc. What to do? Listen to vinyl in good condition on a good turntable, or a well recorded & mastered CD (usually the later releases or masters), 24-bit 96 kHz digital recordings or the for now occasional SACD or DVD-A. One idea might be to make a 24/192 hi-rez digital recording (24/96 for multi-channel) off a brand new LP or vinyl platter. One could do this with a RME or Lynx sound card, good calibrated condenser microphone, a good turntable/stylus... & a DVD RW drive or even burned right to a hard drive. If you notice the same is true of digital (in the sense of the word digital, e.g. Class D) vs. analog amps - where digital amps are now becoming very popular for home & car subwoofers. They are slowly creeping into the home amplifier market, but seem to need a bit more switching/sampling power for the higher frequencies to get on par with higher-end Class A or AB amps. Interesting, when they first debuted like CDs, they were called ?the perfect sound?. ;-) Some are pretty good, even sound like a tube amp & all very efficient. Some of the best vinyl releases I've ever heard are Decca 78's (some even on a mono speaker setup) & a LP DJ version special release, which are made of super-thick vinyl. I also like linear or ?tangential? tracking arms on a turntable, because of the centrifugal force from the stylus which can get ?substantial? towards the end of play & wear out the outer groove or right channel more than the other. Also vinyl is cut or ?recorded? on a linear system. |
Subject:
Re: Vinyl LP sound versus CD sound
From: kesshutsu-ga on 21 Nov 2004 23:27 PST |
That's 44,100 samples -per second- ..not per minute. It was mentioned that there are a possible infinite ammount of snapshots taken which is infact incorrect. I'd say infact.. that when you get down to how many unique sounds are happening per second on a vinyl.. (try to calculate it's sampling rate.. as if it were a digital system) ..You'd find that a Super Audio CD had much better response.. not to mention there's much less noise.. and more channels Bottom line SACD > Vinyl |
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