IPB

Welcome Guest ( Log In | Register )

A secret "known by signal processing experts" or nonsense?
adamdea
post Jan 10 2013, 17:16
Post #1





Group: Members
Posts: 24
Joined: 31-August 11
Member No.: 93396




http://www.wickeddigital.com.au/index.php/...eally-necessary
Sets out what is described as a White Paper by Marco Manunta of M2Tech. It contains the following passage (my emphasis)

"But there is something more. Itís known by signal processing experts, and absolutely not popularized amongst music lovers, that converting an analog signal into a discrete-time one (as it happens when converting from analog to digital) destroys the phase information in the two top octaves of the resulting spectrum. In a CD-standard digital recording, all phase information are lost from 5.5kHz up to 22kHz,"

Can any signal processing experts comment on whether this is true or not, and if so why. As a mere layman I am not able to understand why it even might seem be true.
Go to the top of the page
+Quote Post
 
Start new topic
Replies
eahm
post Jan 10 2013, 19:01
Post #2





Group: Members
Posts: 1129
Joined: 11-February 12
Member No.: 97076



[OT]Thank you adamdea, now we all need a 5.6MHz/1mbit iPod.[/OT]

This post has been edited by eahm: Jan 10 2013, 19:26
Go to the top of the page
+Quote Post

Posts in this topic
- adamdea   A secret "known by signal processing experts" or nonsense?   Jan 10 2013, 17:16
- - greynol   It's complete nonsense. But hey, it's the ...   Jan 10 2013, 17:31
- - saratoga   QUOTE (adamdea @ Jan 10 2013, 11:16) Can ...   Jan 10 2013, 17:33
- - DonP   QUOTE (adamdea @ Jan 10 2013, 11:16) http...   Jan 10 2013, 17:44
- - jmvalin   QUOTE (adamdea @ Jan 10 2013, 11:16) ...   Jan 10 2013, 18:19
- - Kohlrabi   Their website is filled with various other nonsens...   Jan 10 2013, 18:33
- - eahm   Thank you adamdea, now we all need a 5.6MHz/1mbit ...   Jan 10 2013, 19:01
- - mzil   QUOTE (adamdea @ Jan 10 2013, 12:16) http...   Jan 10 2013, 19:54
|- - db1989   QUOTE (mzil @ Jan 10 2013, 18:54) However...   Jan 10 2013, 21:09
- - adamdea   Thanks everyone, I thought it seemed like nonsense...   Jan 10 2013, 23:08
|- - Arnold B. Krueger   QUOTE (adamdea @ Jan 10 2013, 17:08) Than...   Jan 11 2013, 16:58
|- - dhromed   QUOTE (Arnold B. Krueger @ Jan 11 2013, 16...   Jan 11 2013, 17:12
||- - saratoga   QUOTE (dhromed @ Jan 11 2013, 11:12) QUOT...   Jan 11 2013, 17:22
|- - mzil   QUOTE (Arnold B. Krueger @ Jan 11 2013, 11...   Jan 11 2013, 17:58
||- - Arnold B. Krueger   QUOTE (mzil @ Jan 11 2013, 11:58) QUOTE (...   Jan 11 2013, 21:31
||- - mzil   QUOTE (Arnold B. Krueger @ Jan 11 2013, 16...   Jan 11 2013, 23:33
||- - Kees de Visser   You're being mean with old men (like me)   Jan 12 2013, 10:25
|- - Ethan Winer   QUOTE (Arnold B. Krueger @ Jan 11 2013, 10...   Jan 11 2013, 21:27
||- - jmvalin   QUOTE (Ethan Winer @ Jan 11 2013, 15:27) ...   Jan 11 2013, 22:26
||- - Ethan Winer   QUOTE (jmvalin @ Jan 11 2013, 16:26) Actu...   Jan 12 2013, 19:32
||- - Woodinville   QUOTE (Ethan Winer @ Jan 12 2013, 10:32) ...   Jan 12 2013, 20:21
|||- - Ethan Winer   QUOTE (Woodinville @ Jan 12 2013, 14:21) ...   Jan 13 2013, 20:03
|||- - jmvalin   QUOTE (Ethan Winer @ Jan 13 2013, 14:03) ...   Jan 13 2013, 20:17
||- - jmvalin   QUOTE (Ethan Winer @ Jan 12 2013, 13:32) ...   Jan 13 2013, 08:46
|- - Woodinville   QUOTE (Arnold B. Krueger @ Jan 11 2013, 07...   Jan 12 2013, 20:17
- - Arnold B. Krueger   QUOTE (adamdea @ Jan 10 2013, 11:16) http...   Jan 11 2013, 03:58
- - greynol   Detection of phase differences between channels do...   Jan 11 2013, 20:32
|- - mzil   QUOTE (greynol @ Jan 11 2013, 15:32) Dete...   Jan 11 2013, 21:31
- - greynol   @Ethan: I hope this isn't, "I tried it on...   Jan 11 2013, 21:32
|- - Ethan Winer   QUOTE (greynol @ Jan 11 2013, 15:32) I ho...   Jan 11 2013, 22:00
- - greynol   I did not take the OP as meaning phase relation be...   Jan 11 2013, 21:39
- - Woodinville   QUOTE (adamdea @ Jan 10 2013, 08:16) http...   Jan 12 2013, 20:14
- - greynol   Delay by a half sample: up-convert to a higher sam...   Jan 13 2013, 20:09
- - Woodinville   QUOTE (greynol @ Jan 13 2013, 11:09) Dela...   Jan 14 2013, 03:16
- - Ethan Winer   Oh, you math guys... Though I do understand up-sa...   Jan 15 2013, 21:42


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 30th October 2014 - 14:16