Is there any PC based software to crossover the L & R channels to the sub? - diyAudio
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Old 23rd October 2011, 03:15 AM   #1
spot is offline spot  Australia
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Default Is there any PC based software to crossover the L & R channels to the sub?

I am putting together a PC based 5.1 system for movies and music.
It would work out very well if I could get the PC to crossover the lower frequencies from the front left and right channels and direct them to the sub.
Is there any software available that can do this?
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Old 23rd October 2011, 10:22 AM   #2
raindog is offline raindog  Romania
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Hello spot,
first, the LFE ( sub ) channel on the soundcard is active only when the soundcard is set for 5.1 ( or 7.1 ) output . I don't know of any standalone software that can take the sound from another app and do an upmix to 5.1 , but there are plugins - like ''channel mixer'' for foobar - that can do that , you just have to look for a plugin / add-on for the software that you use. Also most 5.1 systems ( at least the ''PC'' type ) have a built-in filter / mixer for the subwoofer ( so you get some bass even in stereo mode ).
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Old 3rd November 2011, 06:15 AM   #3
dangus is offline dangus  Canada
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Maybe AC3Filter can do that.

An M-Audio Delta 410 PCI card that I was thinking about getting has bass management built into the card, with selectable crossover frequency. There's some used ones on eBay now for a reasonable price, with the necessary breakout cables, if you're in the US (seller only ships UPS). I'd buy one but UPS tends to add crazy brokerage fees when delivering in Canada.
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Old 3rd November 2011, 07:20 AM   #4
phofman is online now phofman  Czech Republic
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Quote:
Originally Posted by dangus View Post
An M-Audio Delta 410 PCI card that I was thinking about getting has bass management built into the card, with selectable crossover frequency.
Just a note, the bass management is built into the driver, the card itself does no DSP. It has only Envy24 and codecs.

http://media.zzounds.com/media/brand...a5c7bc1d7a.jpg
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Old 15th November 2011, 07:46 PM   #5
ENSen is offline ENSen  Sweden
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For Linux there is a program called BruteFir that can be used for crossover and other types of filtering like digital room correction (DRC).
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Old 15th November 2011, 07:55 PM   #6
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See if Thuneau Frequency Allocator fits your needs.
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Old 18th November 2011, 03:01 PM   #7
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i think what you need is to replace your Sound card.. what you want depends on your sound card....other cards usually emulate only the output of 5.1 speaker system

the cheapest pci card i have is the CMI 5.1 PCI sound Card it has output for SUb and i'm not happy with that.

this is what i have on my PC now.... Logitech 5.1

Click the image to open in full size.
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Old 18th November 2011, 03:44 PM   #8
boris81 is offline boris81  United States
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I'm almost certain that the kx-project drivers for the Creative Audigy 2 sound cards can do it. I don't know how it is done exactly and it might take some effort on your part to figure it out. They do have a surround sound processor module so it might be as easy as routing the correct inputs/outputs.
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Old 21st November 2011, 10:30 AM   #9
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Hi Spot,

I now use the Media Player Classic with AC3 filter exclusively for all music and video. AC3 filter let you set up your speakers, in my case I have a 4.1 system. You can set up bass redirection and the cut off frequnecy. It also has a facility to create your own matrix to redirect the front channels to the surround speakers.
Media Player Classic and AC3 are free downloads so you'll lose nothing by trying them out.

Cheers

Ned
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Old 23rd November 2011, 10:56 AM   #10
spot is offline spot  Australia
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Quote:
Originally Posted by NED1955 View Post
... AC3 filter let you set up your speakers, in my case I have a 4.1 system. You can set up bass redirection ....
Thanks, AC3filters Bass Redirection feature is the solution.

The docs do say that sound cards can come with this feature (only use one at a time).
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