KeithEmo
Member of the Trade: Emotiva
- Joined
- Aug 13, 2014
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Absolutely true.....
However, part of what created the "imbalance of perception" is the difficulty with producing vinyl recordings (for end users).
It's simple for most of us to make a digital copy of a vinyl album - and note the tiny differences between the recording and the original. However, it's not practical for most end users to make a vinyl copy of their favorite CD, and note the much larger differences. Therefore, because we can't make vinyl recordings ourselves, it's impossible to compare the differences that result from both processes... and many people come to think of vinyl albums as some sort of "reference" or "master" - rather than as just another copy (which they have no practical way to compare to the original).
This also brings up another interesting point. When the early tests were performed to determine whether "the CD format was audibly transparent".... they "inserted a CD quality A/D and D/A loop into the signal chain" to see if anyone could detect whether it caused audible degradation of the signal. However, was their signal source a direct feed from a high quality set of microphones and a mixing console, or was their source an ANALOG MASTER TAPE? (If their source was an analog master tape, then all they could really determine was whether the "CD quality signal loop" introduced WORSE signal degradation that that already being introduced by their tape equipment... and we already know that analog tape has many flaws and limitations. And, even if a direct feed from a mixing console, with live music, was used... the quality of their test signal was still limited by the quality of the console and other equipment they used. And their results were limited by the quality of the playback equipment they used... which presumes that whatever speakers and playback electronics they had available in the 1970s were also "audibly perfect".)
In simplest terms, all they could conceivably prove was that "the Red Book CD format was audibly transparent when reproducing the sample content they had available, and actually used, when they tested it". In other words, if you wish to claim that the tests that proved that the Red Book CD format was audibly transparent are still relevant, you must base that claim on the assumption that there is no content available today that is of audibly better quality than what was used when they ran the tests, and that there is no playback equipment available today that is audibly better than what they used. (If all they did was to prove that Red Book CD was audibly transparent when used to reproduced analog master tapes, which were themselves NOT audibly transparent, then you have not proven the wider case to be true.)
However, part of what created the "imbalance of perception" is the difficulty with producing vinyl recordings (for end users).
It's simple for most of us to make a digital copy of a vinyl album - and note the tiny differences between the recording and the original. However, it's not practical for most end users to make a vinyl copy of their favorite CD, and note the much larger differences. Therefore, because we can't make vinyl recordings ourselves, it's impossible to compare the differences that result from both processes... and many people come to think of vinyl albums as some sort of "reference" or "master" - rather than as just another copy (which they have no practical way to compare to the original).
This also brings up another interesting point. When the early tests were performed to determine whether "the CD format was audibly transparent".... they "inserted a CD quality A/D and D/A loop into the signal chain" to see if anyone could detect whether it caused audible degradation of the signal. However, was their signal source a direct feed from a high quality set of microphones and a mixing console, or was their source an ANALOG MASTER TAPE? (If their source was an analog master tape, then all they could really determine was whether the "CD quality signal loop" introduced WORSE signal degradation that that already being introduced by their tape equipment... and we already know that analog tape has many flaws and limitations. And, even if a direct feed from a mixing console, with live music, was used... the quality of their test signal was still limited by the quality of the console and other equipment they used. And their results were limited by the quality of the playback equipment they used... which presumes that whatever speakers and playback electronics they had available in the 1970s were also "audibly perfect".)
In simplest terms, all they could conceivably prove was that "the Red Book CD format was audibly transparent when reproducing the sample content they had available, and actually used, when they tested it". In other words, if you wish to claim that the tests that proved that the Red Book CD format was audibly transparent are still relevant, you must base that claim on the assumption that there is no content available today that is of audibly better quality than what was used when they ran the tests, and that there is no playback equipment available today that is audibly better than what they used. (If all they did was to prove that Red Book CD was audibly transparent when used to reproduced analog master tapes, which were themselves NOT audibly transparent, then you have not proven the wider case to be true.)
There is not and never has been a lossless analog recording medium. When recording analog you had to spend time deciding your best compromise of trade off's for the recording you made. There is not a single piece of analog tape or vinyl the sounds anything like the the signal from the microphone(s). That doesn't mean it could not be manipulated into something pleasant but it was never accurate.
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