# Thread: Signal Processing Question: Paging Mr. Soundman

1. Yeah I'm not sure how the car crossovers work exactly. I mostly have experience with the crossovers in the home variety I know with the Mini-DSP you can control that kind of stuff.

From your pictures I don't see anything that looks as though it'd control crossover slope. Maybe the frequency multiplier? But I'm guessing that more or less boosts certain frequencies.

Sorry for the 2 posts that more or less say the same things, I was under moderation and apparently it was taking a few days to approve them.

2. No problem. You just helped me make sure I had another base covered. Appreciate the help.

Mal

3. at the rate i'm going, it doesn't look like i'll be able to do anything till the weekend.. maybe my boss just needs to learn that jobs take longer then he thinks...

hdale--- looking over the manual for 4ofakind's x-over, i do not see any options for that(the part on the left is for parametric eq to reduce resonances, and the part on the right is freq and level adjustment--link to manual). 4ofakind-- what he is referring to is how quickly the x-over drops the unwanted frequencies at the set frequency.

this explains it a little more:
http://jimmyauw.com/2006/07/13/activ...ver-explained/

particularly this:
Every crossover has something called “cut-off frequency”. At this frequency, the volume should be -3 dB lower than before, and getting lower lower and lower after this frequency. Cut-off frequency often called F3 (I will let you know why, but later).
Every crossover also has something called “slope” or “order”. Slope will affect the roll-off frequency for crossover. Let’s say your slope is 6 dB. It means that every octave after the cut-off frequency, the volume will be reduced by -6 dB. Beside slope, we are used to use word “order” to inform the slope. First order crossover has 6 dB slope, second order has 12 dB, third order has 18 dB, fourth order has 24 dB, and vice versa.
btw, your components came with a 12db/oct crossover-- and after playing with different slopes, i recommend that for the smoothest sound. anything higher will start to lead to very sharp transitions between speakers, which makes it too easy to pick apart the soundstage, instead of enjoying the music.

Originally Posted by 4ofakind
Question: ASIO4All won't really do me any good in my particular setup w/o something like Console or AM right? But I can use Console w/o ASIO4All right?
yes. but the whole reason for A4A is the vst hosts like console or audiomulch. if i remember right, you will need a4a to get all the inputs into console-- it won't show multiple wdm drivers(my soundcard has 8 outputs, it would only allow me to pick a pair at a time)..

4. Ok I think I got the way I want to go worked out:

VAC -> Console -> VST -> WMP

I downloaded all these components (All trials except the Karma DSP Pack) and played w/ them a bit on my Win XP laptop. I did not use A4A and it does not seem like I need it. I got audio to play out th built-in speakers and I was able to make changes w/ the EQ real time. I attached a screen shot.

Mal

5. ok, fired up console, but still need to install vac and a4a...

Originally Posted by soundman98
if i remember right, you will need a4a to get all the inputs into console-- it won't show multiple wdm drivers(my soundcard has 8 outputs, it would only allow me to pick a pair at a time)..
after quickly going over the settings, i believe i was wrong on this. though i need to locate my 5.1 usb card to confirm more..

edit: no, i was right.. console stinks, and won't show any more then 2 channels of any audio device.. that is why a4a is absolutely needed..

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