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In Reply to: HDCD technology was originally developed by Keith Johnson and Pflash Pflaumer posted by Teresa on December 12, 2005 at 18:32:36:
Charles' post was wrong on two counts:First of all, HDCD has nothing to do with a specific A/D or D/A implementation. Originally, it may have been, but it no longer is. You can have a completely compliant HDCD implementation without using the Pacific Microsonics IC.
Secondly, Charles seem to be implying that the "benefits" of HDCD are solely due to reversible compression. Even a casual reading of the technical literature will show that this is not the case. Even the excerpt that you quoted from the web site states that Peak Extend is only part of the overall process that also includes dithering, and dynamic filtering.
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Follow Ups
- It's completely irrelevant who "developed" HDCD ... - Christine Tham 00:11:02 12/13/05 (68)
- No it's not... - Frank.. 03:31:47 12/13/05 (67)
- Still irrelevant - Christine Tham 13:43:25 12/13/05 (66)
- Retrofitting HDCD to existing DACs & standalone HDCD decoders - gregory battaglia 19:01:59 12/25/05 (0)
- List of HDCD-equipped DACs - gregory battaglia 18:49:22 12/25/05 (1)
- The AlpineF#1Status outboard processor - head_unit 00:08:03 01/25/06 (0)
- Re: Still irrelevant - The Sound Guy 17:21:10 12/13/05 (62)
- Do an internet search (nt) - Christine Tham 18:43:55 12/13/05 (61)
- Give real links - The Sound Guy 20:57:13 12/13/05 (60)
- i don't care whether you believe or not. do your own research (nt) - Christine Tham 21:29:50 12/13/05 (59)
- According to Microsoft themselves... HDCD process hasn't changed. See link. Whats your point?... - Steve Cortez 04:44:34 12/17/05 (58)
- Read very carefully - Christine Tham 13:31:19 12/17/05 (57)
- Wrong again - Charles Hansen 15:54:33 12/17/05 (56)
- For reference, can you educate me on exactly which part of my post is "wrong again"? - Christine Tham 22:58:24 12/17/05 (0)
- Yikes! - Christine Tham 22:38:27 12/17/05 (54)
- You've COMPLETELY missed Charles' main retort on your "Peak Extend" argument... - Steve Cortez 01:31:21 12/18/05 (53)
- No - Charles is just plain wrong, or at least very self serving - Christine Tham 12:08:43 12/18/05 (52)
- blah blah blah... the only one PUSHING a point is you... - Steve Cortez 15:28:54 12/18/05 (51)
- why are you so angry? - Christine Tham 22:12:04 12/18/05 (50)
- You are way off base - Charles Hansen 12:01:38 12/19/05 (49)
- No Charles, it is you who is off base - Christine Tham 15:21:21 12/19/05 (48)
- Reading comprehension an issue? - Charles Hansen 21:26:14 12/19/05 (47)
- Re: Reading comprehension an issue? - Martin419 08:23:52 12/21/05 (0)
- Wow - racerguy 07:11:29 12/21/05 (1)
- I stand corrected - Charles Hansen 09:48:09 12/21/05 (0)
- Maybe you could do with a crash course on how to use search as well? - Christine Tham 23:11:37 12/19/05 (43)
- You want an apology? - Charles Hansen 22:17:21 12/20/05 (38)
- Perhaps it is you who has reading comprehension issues? - Christine Tham 00:59:31 12/22/05 (18)
- This is just silly - Charles Hansen 09:08:41 12/22/05 (17)
- Who is being silly? - Christine Tham 11:49:06 12/22/05 (16)
- That would be you - Charles Hansen 20:27:20 12/22/05 (15)
- Re: That would be you - Christine Tham 15:23:38 12/23/05 (14)
- Re: That would be you - Charles Hansen 20:14:53 12/23/05 (13)
- Re: That would be you - Christine Tham 00:01:07 12/24/05 (12)
- Figure 3: Digital rip of an HDCD without Peak Extend - Christine Tham 00:09:39 12/24/05 (9)
- Figure 4: Output of WMP (no Peak Extend) - Christine Tham 00:11:08 12/24/05 (8)
- By the way, here are some stats on the non decoded vs decoded outputs - Christine Tham 00:28:38 12/24/05 (7)
- Thanks for posting these graphs - Charles Hansen 10:51:35 12/24/05 (6)
- Re: Thanks for posting these graphs - Christine Tham 12:12:00 12/24/05 (5)
- This is just silly - Charles Hansen 14:46:22 12/24/05 (4)
- HDCD is defined by the patent, not the implementation - Christine Tham 22:38:00 12/24/05 (3)
- Oh, that's right... - Charles Hansen 13:06:23 12/25/05 (2)
- And your point is? - Christine Tham 15:31:48 01/03/06 (1)
- Yep, yep, and yep. - Charles Hansen 19:43:56 01/03/06 (0)
- Figure 1: Digital rip of an HDCD with Peak Extend - Christine Tham 00:04:18 12/24/05 (1)
- Figure 2: WMP decoded output of the track - Christine Tham 00:06:28 12/24/05 (0)
- Charles you do owe Christine an apology, because you are dead wrong. Christine has it 100% correct. - Teresa 06:51:43 12/21/05 (18)
- Hmmm... - Charles Hansen 09:34:25 12/21/05 (17)
- Charles I have found some links to help you understand HDCD better: - Teresa 19:38:30 12/21/05 (3)
- Re: Charles I have found some links to help you understand HDCD better: - Charles Hansen 20:07:24 12/21/05 (2)
- Thanks for the links Charles, it will take a while to read all of these. - Teresa 20:46:09 12/21/05 (1)
- You're welcome - Charles Hansen 22:00:32 12/21/05 (0)
- Still waiting for that apology ... - Christine Tham 16:52:05 12/21/05 (12)
- You are still confused - Charles Hansen 19:52:19 12/21/05 (11)
- Re: You are still confused - Christine Tham 00:01:40 12/22/05 (10)
- Taking a page from W - Charles Hansen 09:11:58 12/22/05 (9)
- Re: Taking a page from W - Christine Tham 11:54:11 12/22/05 (8)
- I guess we agree on one thing - Charles Hansen 20:03:13 12/22/05 (7)
- Re: I guess we agree on one thing - Christine Tham 15:25:13 12/23/05 (6)
- Re: I guess we agree on one thing - Charles Hansen 20:16:22 12/23/05 (5)
- Re: I guess we agree on one thing - Christine Tham 00:38:47 12/24/05 (4)
- Once again you are wrong - Charles Hansen 11:00:41 12/24/05 (3)
- I don't think you know the meaning of the word "wrong", since you are not applying it correctly - Christine Tham 12:25:41 12/24/05 (2)
- You have gone beyond obstinence... - Charles Hansen 18:49:44 12/24/05 (1)
- Sorry, but you haven't really given any evidence - Christine Tham 22:47:18 12/24/05 (0)
- I did find the HDCD patent (#5,479,168) - Christine Tham 23:30:02 12/19/05 (3)
- Christine -- give it a rest. You were interesting once. nt. - Martin419 02:58:46 12/21/05 (2)
- I'm sure Christine will as soon as Charles apologizes. She is 100% correct BTW. (nt) - Teresa 07:00:12 12/21/05 (1)
- Thanks, Teresa (nt) - Christine Tham 17:03:58 12/21/05 (0)
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