cdrom pitch

djludovice · 11th June 2009, 09:59 AM

hy there im sick of trying search this subject but with no results, my question is, is it possible to control the speed "pitch" of regular cdrom player, i´ve seen cdrom player kits but they seem to dont have that fuction , if someone knows please teel me what do i need to

cheers

oshifis · 11th June 2009, 11:13 AM

I never tried it, but in theory this would work: just replace the original crystal to a variable frequency oscillator. Don't expect anything good quality, anyway.

cliffforrest · 11th June 2009, 11:20 AM

Quote:

Originally posted by djludovice
hy there im sick of trying search this subject but with no results, my question is, is it possible to control the speed "pitch" of regular cdrom player, i´ve seen cdrom player kits but they seem to dont have that fuction , if someone knows please teel me what do i need to

cheers

Well, you didn't search very hard!

http://www.supremeaudio.com/CD.htm

shows typical DJ players which do have pitch control.

dangus · 12th June 2009, 08:27 AM

Changing the crystal frequency does work with old CD players - I've done it with my old Philips CD-150. Elektor published plans for a pitch control add-on that used a variable frequency oscillator, but it required a board and EPROM that haven't been available for many years. The sensible way to do it now would be with a DDS chip controlled by a microcontroller.

There is CD DJ software that will do the pitch and/or tempo shifting in software.

11th June 2009, 09:59 AM	#1
djludovice diyAudio Member Join Date: Jun 2009	cdrom pitch hy there im sick of trying search this subject but with no results, my question is, is it possible to control the speed "pitch" of regular cdrom player, i´ve seen cdrom player kits but they seem to dont have that fuction , if someone knows please teel me what do i need to cheers

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
What is perfect pitch?	Conrad Hoffman	Everything Else	11	8th April 2007 03:12 PM
Computer CDROM pitch	davesaudio	Digital Source	1	4th May 2005 01:02 AM
pitch!	electro samurai	Analogue Source	6	5th March 2004 01:31 PM
manipulating turntable pitch	slimfeller	Analogue Source	4	19th November 2001 06:55 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

11th June 2009, 11:13 AM	#2
oshifis diyAudio Member Join Date: Mar 2004 Location: Budapest, Hungary	I never tried it, but in theory this would work: just replace the original crystal to a variable frequency oscillator. Don't expect anything good quality, anyway.

12th June 2009, 08:27 AM	#4
dangus diyAudio Member Join Date: May 2004 Location: Vancouver Island	Changing the crystal frequency does work with old CD players - I've done it with my old Philips CD-150. Elektor published plans for a pitch control add-on that used a variable frequency oscillator, but it required a board and EPROM that haven't been available for many years. The sensible way to do it now would be with a DDS chip controlled by a microcontroller. There is CD DJ software that will do the pitch and/or tempo shifting in software.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)