Portable CD player as a transport !?

GregGC · 28th January 2004, 09:36 PM

Excuse my total lack of knowledge on the subject.
I know it sound crazy. The reason I thought of it was the 30-40 sec. anti-shock buffering they do. Doesn't that eliminate jitter? As far as the analogue section, no idea, and the actual transport probably bad too. Any way, No mater how crazy the idea it'll be interesting to elaborate on it. Again the 30 sec. buffering got my attention. If that offers any advantages, can it be implemented in a normal CD transports?

Thanks
Greg

maczrool · 28th January 2004, 10:38 PM

Portable CD players compress in some sort of lossy codec that degrades the sound. It has to be decoded before sent out of the player. Jitter is purported to be higher with the buffer turned on.

Stu

GregGC · 29th January 2004, 02:25 PM

Quote:

Originally posted by maczrool
Portable CD players compress in some sort of lossy codec that degrades the sound. It has to be decoded before sent out of the player. Jitter is purported to be higher with the buffer turned on.

Stu

Thanks a lot.

Richard C · 29th January 2004, 02:42 PM

ALL cd players buffer the data from the disc, jitter isn't caused by variations in disc speed.

maczrool · 29th January 2004, 06:04 PM

Quote:

ALL cd players buffer the data from the disc, jitter isn't caused by variations in disc speed.

Yes, but the anti-skip in portable units is what enables the compression and higher jitter. The motor "kicking in" is also a cause of noise (jitter) in the digital output.

Stu

Benjlv · 30th January 2004, 02:44 AM

if you notice on some players there is a option for no antiskip...some anti skip and a mess of it.

Its possible that these players may not use compression in the lower anti-skip levels. would look into it.

28th January 2004, 09:36 PM	#1
GregGC diyAudio Member Join Date: Oct 2003 Location: Toronto	Portable CD player as a transport !? Excuse my total lack of knowledge on the subject. I know it sound crazy. The reason I thought of it was the 30-40 sec. anti-shock buffering they do. Doesn't that eliminate jitter? As far as the analogue section, no idea, and the actual transport probably bad too. Any way, No mater how crazy the idea it'll be interesting to elaborate on it. Again the 30 sec. buffering got my attention. If that offers any advantages, can it be implemented in a normal CD transports? Thanks Greg

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
DIY transport w/ CDROM drive vs player as transport	dw1narso	Digital Source	6	2nd September 2011 05:15 AM
Using portable cd player as a transport	mudihan	Digital Source	1	18th December 2008 08:24 PM
Wanted: Leftover DAC from an upgraded CD player, or CD player with broken transport.	Spasticteapot	Swap Meet	0	7th October 2006 08:12 PM
Best portable CD player?	zagisrule!	Everything Else	15	17th May 2005 03:54 AM
Portable CD transport?	PJ	Digital Source	0	17th April 2002 01:45 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

28th January 2004, 10:38 PM	#2
maczrool diyAudio Member Join Date: Oct 2002 Location: Louisiana, USA	Portable CD players compress in some sort of lossy codec that degrades the sound. It has to be decoded before sent out of the player. Jitter is purported to be higher with the buffer turned on. Stu

29th January 2004, 02:42 PM	#4
Richard C diyAudio Member Join Date: Jul 2003 Location: Nottingham, England	ALL cd players buffer the data from the disc, jitter isn't caused by variations in disc speed.

30th January 2004, 02:44 AM	#6
Benjlv diyAudio Member Join Date: Nov 2003 Location: East Lansing, MI	if you notice on some players there is a option for no antiskip...some anti skip and a mess of it. Its possible that these players may not use compression in the lower anti-skip levels. would look into it.