Looking for Multichannel Audio USB Devices for LOTS of Input Channels....

Discussion in 'rec.audio.pro' started by Scott, Aug 29, 2003.

  1. Scott

    Scott Guest

    Hi,

    I'm looking for a system that can sample 48 audio channels
    simultaneously and ship the digital data over USB 2.0 / Firewire /
    ethernet? to a PC. The data then is read in via a DirectShow source
    filter, which I would be willing to write.

    I've found the Edirol UA-1000 but an email from them stated I could
    only chain 4 of them together.

    I've found the Metric Halo Mobile IO DSP2882 and am waiting for word
    if 6 of these can be used.

    And on a related note, is there a two channel USB Audio device that
    can sync up to an external clock?

    Thanks!
    Scott
  2. Arny Krueger

    Arny Krueger Guest

    "Scott" <ScottK@signalscape.com> wrote in message
    news:8c4458dd.0308291047.48121918@posting.google.com
    > Hi,
    >
    > I'm looking for a system that can sample 48 audio channels
    > simultaneously and ship the digital data over USB 2.0 / Firewire /
    > ethernet? to a PC. The data then is read in via a DirectShow source
    > filter, which I would be willing to write.
    >
    > I've found the Edirol UA-1000 but an email from them stated I could
    > only chain 4 of them together.
    >
    > I've found the Metric Halo Mobile IO DSP2882 and am waiting for word
    > if 6 of these can be used.
    >
    > And on a related note, is there a two channel USB Audio device that
    > can sync up to an external clock?


    You may want to investigate "Cobranet":

    http://www.rane.com/pdf/cobrapps.pdf

    http://www.qscaudio.com/products/network/rave/rave.htm

    http://www.bss.co.uk/soundweb/products/rangedocs/SoundwebColourBrochure.pdf
  3. Arny Krueger

    Arny Krueger Guest

    "Arny Krueger" <arnyk@hotpop.com> wrote in message
    news:M2GdnXgBON8sN9KiXTWJjA@comcast.com
    > "Scott" <ScottK@signalscape.com> wrote in message
    > news:8c4458dd.0308291047.48121918@posting.google.com
    >> Hi,
    >>
    >> I'm looking for a system that can sample 48 audio channels
    >> simultaneously and ship the digital data over USB 2.0 / Firewire /
    >> ethernet? to a PC. The data then is read in via a DirectShow source
    >> filter, which I would be willing to write.
    >>
    >> I've found the Edirol UA-1000 but an email from them stated I could
    >> only chain 4 of them together.
    >>
    >> I've found the Metric Halo Mobile IO DSP2882 and am waiting for word
    >> if 6 of these can be used.
    >>
    >> And on a related note, is there a two channel USB Audio device that
    >> can sync up to an external clock?

    >
    > You may want to investigate "Cobranet":
    >
    > http://www.rane.com/pdf/cobrapps.pdf
    >
    > http://www.qscaudio.com/products/network/rave/rave.htm
    >
    >

    http://www.bss.co.uk/soundweb/products/rangedocs/SoundwebColourBrochure.pdf

    Whoops, not optimal for going to a PC. Was looking at the "over Ethernet"
    part of the requirement.
  4. Mike Rivers

    Mike Rivers Guest

    ScottK@signalscape.com (Scott) wrote in message news:<8c4458dd.0308291047.48121918@posting.google.com>...

    > I'm looking for a system that can sample 48 audio channels
    > simultaneously and ship the digital data over USB 2.0 / Firewire /
    > ethernet? to a PC.


    I think you might be pushing the limit here, unless you're talking
    about a low sample rate. I don't know how much faster than USB 1 these
    newfangled interfaces are, but I'm not aware of anything that does
    more than 8 channels in and out. I think you're barking up the wrong
    tree here, and you should be looking for dedicated hardware.

    > And on a related note, is there a two channel USB Audio device that
    > can sync up to an external clock?


    I think Metric Halo has a Firewire one. Is that close enough?
    Understand that USB for audio applications may have progressed beyond
    the "toy" category by now, but it's really for people who are afraid
    to open up their computers and install real I/O hardware, or who need
    portability. You have a pretty unusual application there, to record 48
    channels of audio, and you shouldn't be trying to do it with hardware
    that had different design goals in mind.
  5. Mike

    Mike Guest

    mrivers@d-and-d.com (Mike Rivers) wrote in
    news:2a437bac.0308291641.64564651@posting.google.com:

    >
    > I think you might be pushing the limit here, unless you're talking
    > about a low sample rate. I don't know how much faster than USB 1 these
    > newfangled interfaces are,


    Theoretical maxima -

    USB1 1.5Mbits/sec
    USB1.1 12Mbits/sec
    USB2.0 480Mbits/sec
    F/wire 400Mbits/sec

    A small improvement!
  6. Scott

    Scott Guest

    Yes, todays' physical links can move a whole lot of digital audio
    channels.

    I've looked at the Metric Halo devices - they looked very promising
    but I was told by a rep that you could connect a maximum of 4 of them
    together - I would need to connect 6 of them together for my
    application.

    I've done a preliminary look at the MOTU but I'm leary of custom
    proprietary interfaces. Been there, done that, and just had to live
    with too many wierd things and incompatabilities. Hence, I was trying
    to go a route that used more "standard" interfaces (Firewire, USB2,
    ethernet, etc) before trying out proprietary interfaces.

    The Cobra Net and the Rane NM 84 looked good - I like the network
    approach, but I don't see how multiple NM 84s can be synched to a
    common clock source which in my app is critical.

    I got excited about the Rave 161 but apparently there's no way to
    snync multiple Rave 161's together so they sample at the same time....

    I'll keep researching.....wonder if there's any data acquisition
    devices that I could use...hmmmm....






    Mike <not@all.com> wrote in message news:<Xns93E77C77693D9nmnmkkk@212.159.13.2>...
    > mrivers@d-and-d.com (Mike Rivers) wrote in
    > news:2a437bac.0308291641.64564651@posting.google.com:
    >
    > >
    > > I think you might be pushing the limit here, unless you're talking
    > > about a low sample rate. I don't know how much faster than USB 1 these
    > > newfangled interfaces are,

    >
    > Theoretical maxima -
    >
    > USB1 1.5Mbits/sec
    > USB1.1 12Mbits/sec
    > USB2.0 480Mbits/sec
    > F/wire 400Mbits/sec
    >
    > A small improvement!

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