Cheaper Hardware

[Dan Moore]

So I'm looking at reducing the cost of the setup and make it more
open. Having a really nice $500-$900 USB sound card to dump the vinyl
to the machine is nice but I think I should be able to make this
(http://www.sparkfun.com/products/9365) work with a fairly nice
micro-controller, or a raspberry-pi boards, or a maple board
(http://leaflabs.com/devices/).

Let me know if you guys have any suggestions.

Thanks,

Dan Moore

[Kyle McDonald]

those devices look great, but i think the thing to keep in mind is:

1 everyone who is using this will already have a digital vinyl system
of some sort. we need to act "in the middle" somehow.
2 one way to do that would be to create a device that listens to:

- the output of each turntable (2x stereo inputs = 4x total ADCs)
- the output of the crossfader (using the 25kHz technique, maybe one
on the left and one on the right channel)
- also, need to insert the 25 kHz signal on two channels

this is a total of 6x ADCs and 2x DACs (or 5x ADCs and no DACs if you
want to do the 25kHz send/receive with analog hardware)

if you can get that on a board that is also doing DSP and sending back
the data over USB or ethernet, then we could have a device that works
across all different mixers, different DVCSs, and requires 0
electronics skill -- you would just have to Y cable it into the right
places.

[Dan Moore]

So I think the beagleboard and the raspberry-pi already have stereo in
and stereo out, which would cross 2 DAC and 2 ADC off the list. I
think the beagleboard will support a few more ADC if we go with I2S or
SPI chips. I'm pretty sure there are two open I2S stereo channels on
the beagleboard in it's stock configuration. I think they both have
pretty beefy DSPs. Are you thinking of doing all of the positioning
math/decoding on board and just have a box that outputs/records
OSC/SML? Cause that would be dope.

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Dan Moore