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Thread: audio over USB v. optical

  1. #201
    Car Audio Moderator durwood's Avatar
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    seems like this thread has gone from 8 outputs to the desire to only find 5.1 or 7.1 solutions?
    Not as far as I can see. I'm trying to steer it away from that. Put a disclaimer up. Anyone who wants 5.1/7.1 go buy a soundcard. There are plenty of options.

  2. #202
    Constant Bitrate Felix509's Avatar
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    No 5.1 or 7.1 here, just ASIO output via USB to High quality DAC chips.....

    Maybe the best solution for 8 channels is 4 seperate stereo DAC chips on one board with 4 seperate USB inputs and 4 digital receiver chips to convert the ASIO stream to I2S stereo pairs.

    Hopefully the 4 USB outputs can be sent different channels from the Frequency Allocator, I would guess the whole key is getting software to recognize the multiple USB receiver chips as seperate channels so you can assign the correct out to the correct channel after the VST processing.

    I am positive i have read in a forum that someone has multiple USB DACs working together already..


    LATERS!

  3. #203
    Car Audio Moderator durwood's Avatar
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    the TUSB3200 chip supports 8 channels, sorry Red nothing I have seen will give us 10. It's not a processor but more of a communitcation device designed to interface with as many as 8 mono dacs. Problem is requires a driver to be written to control the routing part.

  4. #204
    Car Audio Moderator durwood's Avatar
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    You've been gone too long from this monster you created

  5. #205
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    it is, but by calling it 7.1 or 5.1 it's signifying to me that the intent is surround sound and anything else isn't desired.

    I just think it's taking this thread in another direction than initialy intended.

    If that's the intended purpose, then cool.
    Jan Bennett
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    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  6. #206
    Car Audio Moderator durwood's Avatar
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    well it seems roaddog wants 7.1 but Felix, Turbo, scott, and myself are working towards 8 channel stereo outputs. I think we win.

    Sorry Roaddog

  7. #207
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    that's what I was trying to point out earlier.

    It's perfectly fine to come to the forum and want help on finding a solution. But to jump into another thread and try and change it to be what you're looking for causes problems.

    Perhaps we should start another thread specifically for the 5.1/7.1 solutions.

    Again, I will repeat this...you must first learn to crawl before you can walk. We must first get the basics worked out before we can move onto the more advanced features (like surround sound decoding built in, or the like).

    This is precisely why I initially decided to go at finding a solution on my own.

    No hard feelings, more like frustration...
    Jan Bennett
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  8. #208
    Constant Bitrate Felix509's Avatar
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    Here is 2 people that will know about this stuff::

    This thread has 2 legitimate Experts on this stuff.. I have read lots of their posts, But in no way do i know them, and never contacted them either..

    Gordon Rankin seems to be the resident USB expert while audioengr is the guy that is behind Empiracal Audio who makes high end USB DAC solutions..


    http://www.audioasylum.com/forums/pc...ges/17720.html

    The Computer Audio Asylum is full of great info, lots of nuts and bolts discussions, much way over my head..


    LATER!

  9. #209
    Car Audio Moderator durwood's Avatar
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    Well if he wants to start a new thread thats up to him. I was almost thinking we should move parts of this thread or start a new thread over in hardware development. Might bring out some electrical gurus.

    Roaddog no, hard feelings, its just that 7.1 surround sound is not the goal here. To do 7.1 you need a decoder. The decoder has to be programmed which makes it a processor. We don't want a processor. We are trying to get a device the puts out pure stereo output to multi-channels. There are plenty of 7.1 sound cards already available. Soundcards are different then DACs.

  10. #210
    Constant Bitrate Felix509's Avatar
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    One more thing i was just thinking, The USB3200 is USB1.1.

    I believe Each individual USB 1.1 connection will be limited by bandwidth to one stereo pair of 24/96 audio.

    That is why i was thinking 4 seperate USB3200 chips.

    Need to locate a USB2 USB audio streaming chip.

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