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Dolby jumps on the upsampling bandwagon
krabapple
post May 21 2012, 23:36
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apparently it's not just 44.1 kHz that's inadequate, it's 48khz too

http://www.dolby.com/uploadedFiles/Assets/...ormance.PDF.pdf

whistled version:

http://www.stereophile.com/content/dolby17...apodizes-truehd


The technical gist is that Dolby's using Meridian's 96kHz upsampler and 'apodizing' filter, which they say masks pre-ringing.
(which apparently is commonly audible using 48kHz SR, and apparently can be masked without introducing frequency response or phase
artifacts that are at least as audible -- right? Because otherwise there would be no point to this...right? )

Btw, my respectable but not-boutique-high-end AVR already upsamples everything to 96kHz (in order to apply DSP) so again, WTF, Dolby?

This post has been edited by krabapple: May 21 2012, 23:38
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Posts in this topic
- krabapple   Dolby jumps on the upsampling bandwagon   May 21 2012, 23:36
- - greynol   They're promising to eliminate preringing on t...   May 22 2012, 00:14
|- - Arnold B. Krueger   QUOTE (greynol @ May 21 2012, 19:14) They...   May 22 2012, 01:30
|- - krabapple   QUOTE (greynol @ May 21 2012, 19:14) They...   May 22 2012, 03:27
|- - greynol   QUOTE (krabapple @ May 21 2012, 19:27) An...   May 22 2012, 06:07
|- - krabapple   QUOTE (greynol @ May 22 2012, 01:07) Of c...   May 22 2012, 08:06
||- - greynol   QUOTE (krabapple @ May 22 2012, 00:06) Th...   May 22 2012, 08:57
||- - Arnold B. Krueger   QUOTE (greynol @ May 22 2012, 03:57) QUOT...   May 22 2012, 13:04
|||- - greynol   QUOTE (Arnold B. Krueger @ May 22 2012, 05...   May 22 2012, 16:39
|||- - krabapple   QUOTE (greynol @ May 22 2012, 11:39) QUOT...   May 22 2012, 17:38
|||- - greynol   QUOTE (krabapple @ May 22 2012, 09:38) I...   May 22 2012, 17:49
||- - krabapple   QUOTE (greynol @ May 22 2012, 03:57) So y...   May 22 2012, 15:28
|- - Arnold B. Krueger   QUOTE (greynol @ May 22 2012, 01:07) QUOT...   May 22 2012, 13:15
|- - Arnold B. Krueger   QUOTE (greynol @ May 22 2012, 01:07) Do y...   May 22 2012, 13:20
|- - Kees de Visser   This press release provides some details: http://i...   May 22 2012, 16:32
|- - krabapple   QUOTE (Kees de Visser @ May 22 2012, 11:3...   May 22 2012, 17:29
|- - 2Bdecided   QUOTE (Kees de Visser @ May 22 2012, 16:3...   May 22 2012, 18:20
|- - Kees de Visser   QUOTE (2Bdecided @ May 22 2012, 19:20) Th...   May 22 2012, 18:34
- - 2Bdecided   Never mind the audibility of the "problem...   May 22 2012, 15:00
- - greynol   QUOTE (Arnold B. Krueger @ May 22 2012, 05...   May 22 2012, 15:50
|- - Arnold B. Krueger   QUOTE (greynol @ May 22 2012, 10:50) QUOT...   May 22 2012, 16:20
- - Wombat   When we realize this pre-ringing is happening at f...   May 22 2012, 16:18
- - greynol   Using an iPad. Thankfully I'm not being accus...   May 22 2012, 16:23
- - WernerO   QUOTE (2Bdecided @ May 22 2012, 18:20) I ...   May 23 2012, 06:37
|- - Arnold B. Krueger   QUOTE (WernerO @ May 23 2012, 01:37) QUOT...   May 23 2012, 11:40
|- - julf   QUOTE (Arnold B. Krueger @ May 23 2012, 12...   May 23 2012, 11:51
||- - Arnold B. Krueger   QUOTE (julf @ May 23 2012, 06:51) QUOTE (...   May 23 2012, 14:27
||- - julf   QUOTE (Arnold B. Krueger @ May 23 2012, 15...   May 23 2012, 14:42
|- - 2Bdecided   QUOTE (Arnold B. Krueger @ May 23 2012, 11...   May 24 2012, 12:41
|- - Arnold B. Krueger   QUOTE (2Bdecided @ May 24 2012, 07:41) QU...   May 24 2012, 14:35
- - andy o   I think there's a simpler explanation. Dolby i...   May 23 2012, 16:43
- - xslig   QUOTE Dolby is just getting desperate cause no one...   May 23 2012, 22:52
|- - 2Bdecided   QUOTE (xslig @ May 23 2012, 22:52) I pred...   May 24 2012, 12:33
- - andy o   They have stuff that does work, but don't put ...   May 24 2012, 04:26
- - Buckchoi   Nokia use DH on their recent Symbian devices.   May 24 2012, 04:52
- - andy o   I only know one person that had a Symbian phone, a...   May 24 2012, 06:58


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