Hi It's posible to do digital room correction and crossovers without buying anything software wise. Hardware (mesurment mic, soundcard with many outputs) still needed. Anyway it took me a while to find this and I couldn't find any threads from a quick search so just making it easier for people to find this stuff.
ACXOplayer:
Can make digital crossovers and perform DRC. Quite easy to use as well.
http://pcazeles.perso.cegetel.net/acxo.htm
foobar 2000 with convolve plugin:
Import the .wav file containing the output of ACXO into this plugin
http://www.foobar2000.org/components
Instructions on how to build a cheap high performance measurement mic:
http://www.linkwitzlab.com/sys_test.htm
So far I have tried this only with DRC on some cheap PC speakers (as I managed to damage the woofer of my usual speakers) but the result is a definite improvement. Not sure of the quality of this aproach Vs. the pro audio stuff that has a thread already but I can't see why there should be a quality difference is IIR filters are used for crossover and FIR for DRC which seems logical. There do apear to be some issues with ACXO and non 44.1Khz sample rates.
ACXOplayer:
Can make digital crossovers and perform DRC. Quite easy to use as well.
http://pcazeles.perso.cegetel.net/acxo.htm
foobar 2000 with convolve plugin:
Import the .wav file containing the output of ACXO into this plugin
http://www.foobar2000.org/components
Instructions on how to build a cheap high performance measurement mic:
http://www.linkwitzlab.com/sys_test.htm
So far I have tried this only with DRC on some cheap PC speakers (as I managed to damage the woofer of my usual speakers) but the result is a definite improvement. Not sure of the quality of this aproach Vs. the pro audio stuff that has a thread already but I can't see why there should be a quality difference is IIR filters are used for crossover and FIR for DRC which seems logical. There do apear to be some issues with ACXO and non 44.1Khz sample rates.
There is an opensource package called DRC that uses BruteFIR to do this. http://www.duffroomcorrection.com/wiki/Main_Page
There are free VST plugins and hosts capable of doing both correction and crossover - you just need a soundcard capable of the necessary signal routing (RME works for me). Last I looked fb2k's vst host plugin was stereo only.
Other software to look out for:
VSThost/SAVIhost - VSThost can do semi-modular routing between VSTs
http://www.hermannseib.com/english/vsthost.htm
Has some very useful plugins/tools, including crossover/filter generators -
http://www.ohl.to/
Free convolution plugin-
http://convolver.sourceforge.net/vst.html
Other software to look out for:
VSThost/SAVIhost - VSThost can do semi-modular routing between VSTs
http://www.hermannseib.com/english/vsthost.htm
Has some very useful plugins/tools, including crossover/filter generators -
http://www.ohl.to/
Free convolution plugin-
http://convolver.sourceforge.net/vst.html
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