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Thread: What does everyone use for Audio Processing?

  1. #1
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    What does everyone use for Audio Processing?

    Since I first thought about doing a carputer back in 2007, I have somewhat become an audio snob and I was curious as to what everyone out there is using for processing?

    Some tell me to use AudioMulch, but I kind of want something that gives me the ability to have full 3 way crossover capabilities with time alignment. The only thing that comes to mind that fits my needs right now would be a Behringer DCX2496 with a 12 volt conversion from here: http://envisionelec.net/index.php?ma...&products_id=2. Another option would be utilizing MiniDSP with infinitely adjustable modules. That only leaves me with a parametric EQ solution, which could be met by the Behringer DEQ2496.

    Of course, that would solve another potential problem with utilizing a PC based solution and that would be the pre-amp voltage offered by most computer sound cards. I can't recall seeing too many sound cards with more than 2 volts of output voltage and many are in the 500 mV range. Another issue that used to occur in earlier Windows based operating system was the addition of artifacts when utilizing the wrong soundcard with various VST and DirectX plugins, hence my apprehension to AudioMulch or any other software based solution.

    Pardon my n00bness as I tried searching and was overwhelmed with "processor, time alignment, and crossover" results.

  2. #2
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    All right, after chatting with one of my friends who is piecing his carputer together, I am going to look into something like the M-Audio Delta 1010LT. He has me somewhat convinced that outboard processing is not necessary as long as the right software solution is chosen.

  3. #3
    Car Audio Moderator durwood's Avatar
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    Quote Originally Posted by gunz4me View Post

    Some tell me to use AudioMulch, but I kind of want something that gives me the ability to have full 3 way crossover capabilities with time alignment.
    Audiomulch is like a plugin patch panel for putting together your own DSP in software. There are other Vsthosts like Console or the free program called VSTHOST. Then you load in any VST you want and connect them together. It is almost limitless depending on your CPU power.

    I suggest reading through the wiki and focus on the few PCI sound cards that have been proven to work with VST's. The 1010LT is a good choice.

    http://www.mp3car.com/wiki/index.php...g_via_Software

    I've been using carpc processing for 4 years now. I can't imagine wanting anything else except > 8 channels, which can be done if I wanted to change out the soundcard.

    The only thing that comes to mind that fits my needs right now would be a Behringer DCX2496 with a 12 volt conversion from here: http://envisionelec.net/index.php?ma...&products_id=2.
    Decent option if you have the space.

    Another option would be utilizing MiniDSP with infinitely adjustable modules.
    IIRC, the minidsp option allows you to use a 4way crossover with graphic EQ or a 4way with parametric EQ. However, it has some serious design flaws starting with the signal ground connected to the power ground. This will almost surely introduce ground loop alternator whine. Read around about it.

    Of course, that would solve another potential problem with utilizing a PC based solution and that would be the pre-amp voltage offered by most computer sound cards. I can't recall seeing too many sound cards with more than 2 volts of output voltage and many are in the 500 mV range.
    That is why your amp has adjustable gain...to match your input signal. I have not found the low voltage to be an issue with amps using a differential input gain stage.

    Another issue that used to occur in earlier Windows based operating system was the addition of artifacts when utilizing the wrong soundcard with various VST and DirectX plugins, hence my apprehension to AudioMulch or any other software based solution.
    I only experienced a latency buffer that was too short to deal with the latency needed for the plugin. Solution was to use another plugin. No big deal because there are multiple options for the important building blocks.

  4. #4
    MySQL Error soundman98's Avatar
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    to add to what durwood said-- i have posted a lot about my experiences doing audio processing on the carpc, so searching for some of my threads is a good start(there is even one in the last 6 mo. that i layed out how to setup AM to get basic audio output)

    one thing about the m-audio 1010lt--many have looked at it thinking it has 10 analog outputs, like the name implies, but it only has 8 analog outputs.. not a major deal-breaker, but many start looking at it when they want more then 8 outputs..

    as durwood touched on, you are only limited to what you can do by how powerful your processor is. you will need a processor better then a atom, i would personally go no lower then a celeron. i use a pentium dual core, and other members have used a core2duo, or i3 with good results.

    another issue that is not touched on a lot, is the quality of the plugins that you use-- kvraudio.com has hundreds of free and paid plugins, but as stated, some are amazing, others are horrible.. this can also play a huge part in how well your system is(i have had crossover plugins that take 3-4% cpu power, and have also had plugins that take less then 1% cpu with the same settings)

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    Thanks for the replies. It looks like I have LOTS of reading ahead of me!

    The M-Audio should meet my current and future needs since I only run 2 way active plus sub but I'll explore the other alternatives.

    Thanks again.

  6. #6
    Car Audio Moderator durwood's Avatar
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    Quote Originally Posted by soundman98 View Post
    one thing about the m-audio 1010lt--many have looked at it thinking it has 10 analog outputs, like the name implies, but it only has 8 analog outputs.. not a major deal-breaker, but many start looking at it when they want more then 8 outputs..
    You should be able to get more than 8 channels with a 1010lt.....you just need 2 of them. According to the manual, you can sync them together within the m-audio control panel. THe question is, does that give you 16 channels in any of the VST host programs? I am hoping someone will be guinea pig someday, I have other priorities for now.


    as durwood touched on, you are only limited to what you can do by how powerful your processor is. you will need a processor better then a atom, i would personally go no lower then a celeron. i use a pentium dual core, and other members have used a core2duo, or i3 with good results.
    I used a P4M for a year and currently use a LE-1620. THe LE-1620 is equivalent to an ATOM 330 according to cpubenchmark.net. Even with the P4M, I was at 50% CPU usage. I wasn't using FIR filtering so I don't need that much CPU. There are greater acoustic issues that override any type holy grail FIR EQ. I did get improved hibernation with a faster PC, but that might have been just a right combination of components.

  7. #7
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    The PC I'm upgrading right now used the 1010LT, Console, some plugins, and got 4-way TA/xo/EQ all working.

    Now I'm trying to make it work in a different setup... but I can tell you it worked the first time

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