Active XO using PC soundcard?

mr_push_pull · 23rd November 2005, 08:03 AM

Is there any software that allows turning a PC soundcard into an active XO?

wintermute · 23rd November 2005, 11:02 AM

Depending on whether you have a supported card or not you could look at the kx drivers, more info in this thread ---> Instant Crossover Prototyping

I installed them for a while but couldn't get speaker workshop to work with them, so uninstalled and reinstalled the standard creative drivers. Worked nicely for testing the active crossover though

Tony.

kexik · 23rd November 2005, 12:35 PM

if you have ASIO compatible card with several outputs, any VST host can principially solve your problem, all you need is pair of track equalizers, or any free VST EQ, there are few free, even with linear phase algorytms (slim slow slider eq, for example)
on the other hand, to play audio files with something like cubase is ehm... let's say less comfortable

perhaps foobar player with some plugins can be good solution:

http://www.hydrogenaudio.org/forums/...hp/t34202.html

mazurek · 23rd November 2005, 03:10 PM

Matlab is good at solving transfer functions, and can filter audio streams. It is only good for prototyping, but if you are at a university, they might have it available for free/cheap.

mr_push_pull · 23rd November 2005, 03:38 PM

Quote:

Originally posted by mazurek
Matlab is good at solving transfer functions, and can filter audio streams. It is only good for prototyping, but if you are at a university, they might have it available for free/cheap.

Matlab is a nice idea. I haven't worked with it for a long time...
Initially I was was thinking about something like CoolEdit but it can't do realtime filtering.

mazurek · 23rd November 2005, 03:47 PM

If you have a copy of Matlab with Simulink it should do realtime easy, and should be a snap to build filters, but as far as I know(at least on my screen) it will only handle two channels. Good enough for me though.

tschrama · 23rd November 2005, 07:03 PM

Would Simulink do it real time.. ... That would be nice indeed. Allthough I do have matlab/simulink.. experience is laking in the simulink department.... could you explain a bit how to do it?

regards,
Thijs

mazurek · 27th November 2005, 02:48 PM

Sorry forgot to reply.

In matlab go to File->New->Model

In simulink go to View->Library Browser

In the library browser, the blocks you need are in

Signal Processing Blockset->Platform Specific I/O->Windows
Where you will find functions for loading sound from the mic/wav file, and outputting to the line out.

Use
Signal Processing->Fitering to do the transfer functions

I think this is how you would go about doing this, I don't have this computer hooked up to a sound card right now though.

mazurek · 27th November 2005, 03:38 PM

Actually, I'm not yet sure how to get the filtering working, I'm playing around with it still.

ch83575 · 1st December 2005, 06:31 PM

I think the most recent version of SoundEasy has a realtime soundcard based filter emulator built in. You can suposedly design, optimize and test filters (passive and active!!) with your soundcard. This emulator (along with the very cool distortion analysis tools) is one of things that is making this budding speaker designer think that SoundEasy might make a very good christmass present (for myself of course

).

23rd November 2005, 08:03 AM	#1
mr_push_pull diyAudio Member Join Date: Mar 2004 Location: At the output stage	Active XO using PC soundcard? Is there any software that allows turning a PC soundcard into an active XO?

23rd November 2005, 11:02 AM	#2
wintermute just another diyAudio Moderator Join Date: Aug 2003 Location: Sydney Blog Entries: 22	Depending on whether you have a supported card or not you could look at the kx drivers, more info in this thread ---> Instant Crossover Prototyping I installed them for a while but couldn't get speaker workshop to work with them, so uninstalled and reinstalled the standard creative drivers. Worked nicely for testing the active crossover though Tony. __________________ Any intelligence I may appear to have is purely artificial! Some of my photos

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23rd November 2005, 12:35 PM	#3
kexik diyAudio Member Join Date: Nov 2005 Location: Grenoble, France	if you have ASIO compatible card with several outputs, any VST host can principially solve your problem, all you need is pair of track equalizers, or any free VST EQ, there are few free, even with linear phase algorytms (slim slow slider eq, for example) on the other hand, to play audio files with something like cubase is ehm... let's say less comfortable perhaps foobar player with some plugins can be good solution: http://www.hydrogenaudio.org/forums/...hp/t34202.html

23rd November 2005, 03:10 PM	#4
mazurek diyAudio Member Join Date: Aug 2005	Matlab is good at solving transfer functions, and can filter audio streams. It is only good for prototyping, but if you are at a university, they might have it available for free/cheap.

23rd November 2005, 03:47 PM	#6
mazurek diyAudio Member Join Date: Aug 2005	If you have a copy of Matlab with Simulink it should do realtime easy, and should be a snap to build filters, but as far as I know(at least on my screen) it will only handle two channels. Good enough for me though.

23rd November 2005, 07:03 PM	#7
tschrama diyAudio Member Join Date: Jul 2001 Location: The Netherlands	Would Simulink do it real time.. ... That would be nice indeed. Allthough I do have matlab/simulink.. experience is laking in the simulink department.... could you explain a bit how to do it? regards, Thijs

27th November 2005, 02:48 PM	#8
mazurek diyAudio Member Join Date: Aug 2005	Sorry forgot to reply. In matlab go to File->New->Model In simulink go to View->Library Browser In the library browser, the blocks you need are in Signal Processing Blockset->Platform Specific I/O->Windows Where you will find functions for loading sound from the mic/wav file, and outputting to the line out. Use Signal Processing->Fitering to do the transfer functions I think this is how you would go about doing this, I don't have this computer hooked up to a sound card right now though.

27th November 2005, 03:38 PM	#9
mazurek diyAudio Member Join Date: Aug 2005	Actually, I'm not yet sure how to get the filtering working, I'm playing around with it still.

1st December 2005, 06:31 PM	#10
ch83575 diyAudio Member Join Date: Jan 2005 Location: Michigan	I think the most recent version of SoundEasy has a realtime soundcard based filter emulator built in. You can suposedly design, optimize and test filters (passive and active!!) with your soundcard. This emulator (along with the very cool distortion analysis tools) is one of things that is making this budding speaker designer think that SoundEasy might make a very good christmass present (for myself of course ).

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