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Saving music from destruction: upsampling
krabapple
post May 31 2011, 23:11
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This article starts off well , with a relatively sane (for audiophile-speak) statement of what good upsampling can and cannot do:

http://www.pstracks.com/av/ham-fisted-upsampling/

but then we get to David Chesky on the defense against accusations that his HDtracks download service is doing 'ham fisted' or pointless upsampling:

QUOTE
David responds. “Why do we sell hi res files at 192/24 when there is no musical energy up at 96khz? Lets look at it like this. In the current state of digital technology we do not have A/D chipsets that work at 44.1/16 that do not have pre and post ringing. This ringing destroys the music in the audio band. Audiophile labels do not record at 192/24 to try to capture what many think is air up over 50K. They do this as to keep the nasty anti-aliasing digital A/D filters as far away from the audio band as they can. This insures less corruption down where the music is. The sound becomes much more analog and relaxed. Think of pre and post ringing like this. You are riding down a street in a Ferrari at 180 MPH over a cobblestone road and someone gives you a camera and ask you to take some photos out of the windows. All these little cobblestones will cause bumps and the camera will not be steady and you will loose the focus. This is what happens in current A/D conversion as well at 44.1/16. Doubling or quadrupling that rate helps smooth the analogous ride."


Emphasis mine.

See any listening test data in there anywhere?

Nah, me neither. Nor any reason why 192kHz versus , say, 96 or 88.2*. Just another inane analogy to sports cars and cameras.

It never ends, does it?


* (if I recall my Dan Lavry whitepapers correctly, the possible negative effects from pre- and post-ringing are taken care of at a SR of ~60kHz)

This post has been edited by krabapple: May 31 2011, 23:11
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Posts in this topic
- krabapple   Saving music from destruction: upsampling   May 31 2011, 23:11
- - lessthanjoey   QUOTE (krabapple @ May 31 2011, 15:11) * ...   May 31 2011, 23:38
- - xnor   David's response = audiophile FUD and a weak a...   Jun 1 2011, 00:37
- - Arnold B. Krueger   QUOTE (krabapple @ May 31 2011, 18:11) Th...   Jun 3 2011, 16:55
|- - lvqcl   QUOTE (Arnold B. Krueger @ Jun 3 2011, 19...   Jun 3 2011, 17:18
|- - IgorC   QUOTE (lvqcl @ Jun 3 2011, 13:18) Wow... ...   Jun 3 2011, 17:47
- - Woodinville   Upsampling does not remove the need for a sharp fi...   Jun 5 2011, 19:50
|- - Arnold B. Krueger   QUOTE (Woodinville @ Jun 5 2011, 14:50) U...   Jun 6 2011, 14:55
- - C.R.Helmrich   QUOTE (krabapple @ Jun 1 2011, 00:11) QUO...   Jun 5 2011, 21:27
- - Wombat   QUOTE (Arnold B. Krueger @ Jun 6 2011, 14...   Jun 6 2011, 16:30
|- - Arnold B. Krueger   QUOTE (Wombat @ Jun 6 2011, 11:30) QUOTE ...   Jun 7 2011, 11:49
- - 2Bdecided   I think there's two different issues. The fir...   Jun 7 2011, 12:39
- - Wombat   QUOTE (Arnold B. Krueger @ Jun 7 2011, 11...   Jun 7 2011, 15:55
|- - krabapple   QUOTE (Wombat @ Jun 7 2011, 10:55) Like t...   Jun 8 2011, 07:43
- - 2Bdecided   It's hardly any surprise that there's almo...   Jun 7 2011, 17:52
|- - C.R.Helmrich   QUOTE (2Bdecided @ Jun 7 2011, 18:52) The...   Jun 7 2011, 20:27
|- - knutinh   QUOTE (C.R.Helmrich @ Jun 7 2011, 21:27) ...   Jun 7 2011, 23:01
|- - C.R.Helmrich   QUOTE (knutinh @ Jun 8 2011, 00:01) Why d...   Jun 8 2011, 12:16
|- - knutinh   QUOTE (C.R.Helmrich @ Jun 8 2011, 13:16) ...   Jun 8 2011, 13:53
|- - 2Bdecided   QUOTE (knutinh @ Jun 8 2011, 13:53) But m...   Jun 9 2011, 10:03
- - Wombat   QUOTE (2Bdecided @ Jun 7 2011, 17:52) B*l...   Jun 7 2011, 19:02
- - AndyH-ha   I'm not against surround sound or any other ap...   Jun 7 2011, 23:04
|- - knutinh   QUOTE (AndyH-ha @ Jun 8 2011, 00:04)...   Jun 8 2011, 09:29
|- - 2Bdecided   QUOTE (AndyH-ha @ Jun 7 2011, 23:04)...   Jun 8 2011, 10:25
|- - dhromed   QUOTE (2Bdecided @ Jun 8 2011, 11:25) You...   Jun 9 2011, 12:51
|- - Woodinville   QUOTE (dhromed @ Jun 9 2011, 04:51) The b...   Jun 9 2011, 20:17
|- - knutinh   QUOTE (Woodinville @ Jun 9 2011, 21:17) W...   Jun 10 2011, 09:54
|- - dhromed   QUOTE (Woodinville @ Jun 9 2011, 21:17) Q...   Jun 10 2011, 16:49
|- - Woodinville   QUOTE (dhromed @ Jun 10 2011, 08:49) Yes,...   Jun 12 2011, 07:52
- - pdq   You do understand that the human eye has no yellow...   Jun 10 2011, 13:39
|- - knutinh   QUOTE (pdq @ Jun 10 2011, 14:39) You do u...   Jun 10 2011, 20:49
|- - Woodinville   QUOTE (pdq @ Jun 10 2011, 05:39) You do u...   Jun 12 2011, 07:53
- - xnor   Sharp Quattron review. Ouch. QUOTE The unfortunat...   Jun 11 2011, 00:18
- - pdq   All I'm saying is that since the human eye has...   Jun 12 2011, 15:57
- - greynol   I know this isn't audio-related, and as such n...   Jun 12 2011, 16:46
- - SCOTU   It seems that there seems to be some confusion tha...   Jun 12 2011, 17:57
|- - knutinh   QUOTE (SCOTU @ Jun 12 2011, 18:57) If you...   Jun 14 2011, 09:02
|- - SCOTU   QUOTE (knutinh @ Jun 14 2011, 03:02) Is i...   Jun 14 2011, 16:54
|- - knutinh   QUOTE (SCOTU @ Jun 14 2011, 17:54) I didn...   Jun 15 2011, 07:19
|- - 2Bdecided   QUOTE xvYCC is not supported by DVD-Video or Blu-r...   Jun 15 2011, 14:11
|- - knutinh   QUOTE (2Bdecided @ Jun 15 2011, 15:11) QU...   Jun 15 2011, 20:54
|- - 2Bdecided   QUOTE (knutinh @ Jun 15 2011, 20:54) QUOT...   Jun 16 2011, 10:25
|- - knutinh   QUOTE (2Bdecided @ Jun 16 2011, 11:25) FW...   Jun 16 2011, 12:00
- - Rotareneg   Cool, an off-topic discussion about color vision...   Jun 15 2011, 19:39
- - 2Bdecided   Consumer camcorders don't do it to look genuin...   Jun 16 2011, 14:08


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