"Here is what I have in mind for the moment. This, I propose, to implement in a Xilinx XC3S1000 fpga. I am going to use a Diglent Spartan 3 Starter board with that part mounted on it. This should be able to cover all that is proposed. I will be controlling it with an Atmel ATmeaga2561 microcontroller.I should be able to run this at 96KHz sample rate, my goal is, however, to run at 192KHz sample rate. The tough one is going to be the filter. I am currently writing the code of the low pass filter. I know that 512 of anything seems like a lot, but, that is just sort of how things break down in the Spartan 3. If it works...I don't think I will need to worry about running out of oscilators. I still need to figure out some way to get modulation into the picture, but, that I am sure will come later. I want to get the basic system down first. It would be kind of keen to be able to do FM modulation from channel to channel..."
More info on the Jim Patchell DSM1 here. Note the filter for the Mattson Mini Modular is based on a Jim Patchell design.
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