A Y
Distinguished Member
- Joined
- Mar 12, 2006
- Messages
- 6,084
- Reaction score
- 1,038
You did not debunk anything. You simply disagreed with Bob Ludwig's view. My money is on him since it reflects what I have heard in the studio.
Since you seem to be inoculated against reason, let me put it in very simple terms:
100 kHz sampling at say 16 bits/sample, dithered has:
1. 93 dB of SNR that is flat from 0 to 50 kHz. The noise floor is constant with frequency.
2. Flat frequency response from 0 to 50 kHz.
3. Is linear, ie. has no distortion.
An LP that carries a 50 kHz signal:
1. Has a noise floor that varies with frequency. On most days, the noise floor changes with each playback as well. The SNR is also significantly lower than 93 dB.
2. Has an uneven frequency response whose shape is affected by the various mechanical parts of the arm, cartridge, and perhaps table.
3. Is significantly non-linear. LP's non-linearity is well-documented, and not really disputable. See for example the various quad encoding schemes introduced in the 70s and what they had to do to work around LP's various problems to use LP's suprasonic response.
Now match up points 1 through 3, and notice that LP deviates significantly from 100 kHz PCM sampling. LP carrying a 50 kHz signal does not even begin to approach 100 kHz PCM sampling.
Again, I have to repeat that it's fine that you like LP, but I don't understand why you persist in trying to ascribe things to it that aren't even remotely true to justify your preferences.
--Andre