IPB

Welcome Guest ( Log In | Register )

Is compression used in CDs?
plazz
post Jul 10 2002, 18:48
Post #1





Group: Members
Posts: 29
Joined: 30-May 02
From: Cork, Ireland
Member No.: 2167



Is any kind of compression at all used in audio CD's? I know that there is on DVD's, just at a huge bitrate.
Go to the top of the page
+Quote Post
 
Start new topic
Replies
JonPike
post Jul 11 2002, 04:55
Post #2





Group: Members
Posts: 234
Joined: 20-November 01
From: Irvine, CA
Member No.: 504



QUOTE
Originally posted by plazz
Is any kind of compression at all used in audio CD's? I know that there is on DVD's, just at a huge bitrate.


Actually, in an indirect sense, the answer may be yes.

I don't know the details, but I have heard a lot of talk that for the anti-skip feature in portable CD player, you have a memory buffer, AND audio compression. For a reasonalble amount of anti-skip time, you need either a expensively large amount of memory, or you can do compression on the data, making your smaller ram buffer "bigger", and not spend as much... therby more profit for you and/or cheaper players for your customers. If this is true, it would seem the compression isn't the best in the world.. (Hmmm.. developers, need to port Lame or MPC to those little micro's the CD's use! If they have the grunt to handle it, that is!)

I'd like to hear about this from someone who knows.. many audiophile types say that anti-skip degrades the sound.. and you want a player that either dosen't have it or truly bypasses it when turned off. I think I might believe them, on my player with my KSC-35's on.. I think I notice a loss of dynamic range, slightly muddy highs, etc..

But my CD software can't run ABX...

Jon
Go to the top of the page
+Quote Post

Posts in this topic
- plazz   Is compression used in CDs?   Jul 10 2002, 18:48
- - rjamorim   QUOTE Originally posted by plazz Is any kind of c...   Jul 10 2002, 18:50
- - Speek   Yes, there are only 44100 samples per second (per ...   Jul 10 2002, 19:47
- - bryant   QUOTE Originally posted by Speek Yes, there are o...   Jul 10 2002, 20:05
- - rjamorim   QUOTE Originally posted by bryant No wonder CDs s...   Jul 10 2002, 20:09
- - fewtch   QUOTE Originally posted by rjamorim WHA? Are y...   Jul 10 2002, 20:22
- - The Belgain   Can anyone tell the difference between 16bit 44.1 ...   Jul 10 2002, 20:27
- - rjamorim   QUOTE Originally posted by The Belgain Can anyone...   Jul 10 2002, 20:41
- - Pio2001   It's a bit like the sound of CDR : there is the sa...   Jul 10 2002, 21:05
- - bryant   QUOTE Originally posted by rjamorim Be prepared, ...   Jul 10 2002, 21:29
- - Frank Klemm   QUOTE Originally posted by bryant Very true, Spee...   Jul 10 2002, 21:38
- - plazz   QUOTE Originally posted by rjamorim I would bel...   Jul 10 2002, 22:12
- - [JAZ]   QUOTE was developed in the 1920's or 30's Man! at...   Jul 10 2002, 22:38
- - Frank Klemm   QUOTE Originally posted by plazz Sony and Phili...   Jul 10 2002, 22:39
- - smg   QUOTE Originally posted by Frank Klemm Refutabl...   Jul 10 2002, 22:41
- - bryant   QUOTE Originally posted by plazz Sony and Philips...   Jul 10 2002, 22:47
- - plazz   I stand corrected. I has thinking of Alec H. Reeve...   Jul 11 2002, 00:02
- - Frank Klemm   QUOTE Originally posted by [JAZ] Man! at that t...   Jul 11 2002, 01:44
- - SometimesWarrior   Thank you for the history lesson, Mr. Klemm! It's...   Jul 11 2002, 02:57
- - gdougherty   QUOTE Originally posted by bryant And the data is...   Jul 11 2002, 04:46
- - JonPike   QUOTE Originally posted by plazz Is any kind of c...   Jul 11 2002, 04:55
- - godzilla525   I have a portable CD player that has anti-skip mem...   Jul 11 2002, 06:30
- - bryant   QUOTE Originally posted by gdougherty Contrary to...   Jul 11 2002, 06:45
- - JonPike   QUOTE Originally posted by godzilla525 I have a p...   Jul 11 2002, 07:02
- - godzilla525   RightMark's test tones are way too short. They do...   Jul 11 2002, 07:57
- - Mr. Mulder   QUOTE Originally posted by godzilla525 RightMark'...   Jul 11 2002, 09:59
- - westgroveg   So then if vinyl records are not compressed they s...   Jul 11 2002, 10:05
- - JonPike   I'll have to go looking thru some bookmarks.. In ...   Jul 11 2002, 10:40
- - KikeG   QUOTE Originally posted by bryant And when 24-bit...   Jul 11 2002, 14:18
- - KikeG   QUOTE Originally posted by westgroveg So then if ...   Jul 11 2002, 14:27
- - godzilla525   Thanks for the links.   Jul 11 2002, 18:32
- - westgroveg   QUOTE Originally posted by KikeG Vinyl records ...   Jul 12 2002, 08:33


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: 20th August 2014 - 22:02