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PostPosted: Mon Nov 26, 2012 4:40 pm 
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Joined: Mon Feb 07, 2011 12:46 pm
Posts: 930
I made a Csound plugin with many commands, and is not finished yet, but some are relevant for NES/Famicom:
  • GEN "famicomdpcm": Loads and decodes a file containing DPCM samples in the format used for 2A03 playback.
  • deltaenc: Perform delta encoding on a signal; you can then use slowchange or integ to decode it.
  • lfsrnoise: Make noise with LFSR, simiar to 2A03 noise channel. Takes a clock signal for input, which can be generated using squarewave.

Download source, binary, and documentation (incomplete): http://zzo38computer.org/csound/

I have read on here before about a VST plugin for DPCM. I don't like VST and prefer Csound (although Csound can also load VST plugins and be used as a VST plugin). This Csound plugin should then be compatible with more operating systems than VST.

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