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#1
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PC audio crossover
Does anyone know whether a PCI card exists that will act as an audio
active crossover network? Ie it should accept a digital input from a PC soundcard then be capable of splitting it digitally into a number of frequency bands (at least 3), with user definable cut off frequencies and attenuation rates. Obviously seperate outputs should be available for each frequency band per channel. Or is it pie in the sky? ;=} Martin |
#2
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Google to "LspCAD PRO"
"Martin" wrote in message om... Does anyone know whether a PCI card exists that will act as an audio active crossover network? Ie it should accept a digital input from a PC soundcard then be capable of splitting it digitally into a number of frequency bands (at least 3), with user definable cut off frequencies and attenuation rates. Obviously seperate outputs should be available for each frequency band per channel. Or is it pie in the sky? ;=} Martin |
#3
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"Billw" wrote in message ...
Google to "LspCAD PRO" Thanks. but I was really after a hardware solution! Martin |
#4
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"Billw" wrote in message ...
Google to "LspCAD PRO" Thanks, but I was really after a hardware solution! Martin |
#6
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#7
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Martin,
Thanks, but I was really after a hardware solution! Then why do you demand it be tied to a computer sound card? It makes much more sense to simply buy an external hardware crossover, and feed it from a standard sound card. --Ethan |
#8
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LspCAD Professional can implement the crossover in software and send the different band
limited signals streams out of the PCI soundcard for amplification and routing to the drivers in the speaker. If you want a hardware box to do the same LspCAD pro is able to flash several models of DSP crossovers with the transfer function developed with the CAD program and it can run out of the box. Is this the hardware solution you are talking about? Phil Abbate LspCAD Dealer www.philsaudio.com/lspcad.htm |
#9
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Tony Ethan Phil & Dick:
Thanks for your views and sorry for the inadvertent second posting of my second message. I'd better explain my situation more clearly: I have an elderly mid-fi stereo (that needs replacing), working through a pair of B&W 2-way speakers that I still find pretty good. I had intended to build an active crossover system, adding a single active sub-woofer to the existing speakers. The passive crossover currently in use would also be dispensed with in favour of an active filter. The cost wouldn't be much of an issue since I already have sufficient TDA 1514s to take care of the power amplification (I'm not proud!) Rather than build, troubleshoot and trim a complicated active filter unit why not use my spare PC to do the job? Apart from saving on shelf space I would also be able to experiment with different cut-off frequencies and slopes to my heart's content. I only listen to classical music from CD and I don't demand the highest of fi so the digital vs analogue debate doesn't apply. If there is a sound card (preferably external USB) that will fit the bill I would be most grateful to hear of it, even if it requires independent software! I could't find anything suitable on the net, and the LspCAD idea is far too expensive and elaborate. Martin |
#10
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Martin,
Rather than build, troubleshoot and trim a complicated active filter unit why not use my spare PC to do the job? I think it's going to be more trouble to do it your proposed way than to simply build an active crossover. In fact, you'll find a good set of plans for an easy to build active crossover on my web site. Look for "Spectrum Analyzer and Equalizer Designs" about 1/2 way down the list on my Articles page: www.ethanwiner.com/articles.html --Ethan |
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