2. analog
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vinyl versus digital redux

Has anyone compared the sound of vinyl with the sound of digital converted from a vinyl intermediary ?

I am referring to 'rips' of vinyl made with high end, high quality vinyl playback systems, with
conversion to high resolution digital.
I find it nearly impossible to distinguish the two results.
The digital rip of a vinyl record sounds identical...or very nearly so...to direct playback of the vinyl.

If one has 'experienced' the foregoing, one might question why digital made without the intermediary of vinyl sounds so different from vinyl.   A detective story ?

We are talking about vinyl made by ADC (analog to digital conversion) of an amplified microphone signal and re-conversion to analog for output to the record cutting lathe, or from analog tape recording of an amplified microphone signal, and then....as above...via ADCl and back to analog for output to the cutting lathe.

Of course vinyl can be and is 'cut' (pressings made from 'stamper' copies the 'master' cut in lacquer) without digital intermediary.  Such practice is apparently uncommon, and ?? identified as such by the 'label' (production)

Has anyone compared vinyl and high resolution digital (downloads) albums offered by the same 'label' of the same performance ?  Granted, digital versus vinyl difference should diminish with higher digital resolution.   Sound waves are sine waves....air waves do not 'travel' in digital bits.    A digital signal cannot be more than an approximation of a sine wave, but a closer approximation as potential digital resolution (equating to bit depth times sampling frequency) increases.

If vinyl and digital well made from vinyl intermediary sound almost identical, and If vinyl and digital not made via vinyl intermediary sound quite different, what is the source of this difference ? 

Could it reside....I'll skip the sound processing stages (including RIAA equalization)...in the electro-mechanical process imparting the signal to the vinyl groove ?

Is there analogy with speaker cone material and the need for a degree of self-damping ?
Were self-damping not to some extent desirable, would not all speaker cones, from tweeter to sub-woofer, be made of materials where stiffness to weight ratio was of sole importance ?

Thanks for any comments.
seventies
seventies OP
67 posts
 
Orpheus10 and others,

I again seek input regarding preservation  ("archival") of music recorded prior to the hi res digital era.
Does playback (with or without digitization) of lp's made, say 40 years ago, from audio tape offer advantage over hi res digital transfers made today from those 40-year-old tapes ?

Is there better preservation of high frequency information on the lp's ?
audio2design
1,351 posts
 
Headphones are not for mixing, at least not ideal. They are for fine work, determining issues, etc.
orpheus10
8,668 posts
 

Seventies, in regard to preservation of music, it has been unanimously decided by the most astute audiophiles that reel to reel tape is ultimate audio for "music lovers" .


In regard to computer storage, I use WAV and the difference between the playback of the reel to reel and the playback of reel to reel tape that I've stored on computer files is "minute".

I'm of that age, which could be questioned in regard to my hearing, but I think it's still pretty good; however, since I am of that age, the allegation that I don't have perfect hearing would have some merit. Never the less, I can distinguish the difference between LP playback, reel to reel playback, or CD playback from my computer.

There are some differences between my computer and stock computers in regard to cards, there is one card for sure that was recommended for analog transfer, but I don't remember which one it is. That information might be on the PC forum. I know for sure that if you do everything right, whatever you store on your computer will be practically indistinguishable from the original.


I used hi-res for awhile, but not every record was perfect; it was hit and miss so I quit, but that was when they first started.
mijostyn's avatar
mijostyn
8,570 posts
 
I do not think there is any argument that analog signals on magnetic tape deteriorate over time. What I hear most is that high frequencies start to roll off. These can always be EQed up I suppose. Once the music is digitized it is immortal as long as the hard drive isn't destroyed. My understanding is that most music has now been digitized in computer libraries and as long as there are sufficient back-ups there is no better way to warehouse it at this time. Does it matter if the path to your ears is all analog or all digital or a mix of the two? If it is good music and it sounds good? Well Scarlet, frankly, I could not give a.......
audio2design
1,351 posts
 
Seventies,

Analog tape is surprisingly robust for storage. It is usage that degrades it.  The biggest concern is break down of the underlying binder for the magnetic materials and the plastic substrate. If really old it is acetate and very prone to mechanical failure.   You can get some layer to layer bleedthrough on thin cheap tape.  You don't lose high frequency from storage but you may add noise.  The plastic in records can also slowly decay albeit slowly.
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