[sdiy] Some Synergy info, was Re: Synclavier

[Veronica Merryfield]

On 2010-03-09, at 2:08 PM, karl dalen wrote:

> --- Den tis 2010-03-09 skrev Veronica Merryfield 
>> These days, an FPGA implementation would probably take more
>> effort and logic to implement the phase control than using a
>> multiple since many FPGA have the multiple built in, but it
>> would be a fun exercise.
> 
> A Japanese gentleman did it back in 2005, Synergy on a
> Altera FPGA but the pages seams gone, Matrix had some info.
> http://matrixsynth.blogspot.com/2006/12/pochi-crafts-diy-dki-synergy.html
> 
> Great work with the softsynth Veronica.
> 
Thanks Karl. 

I should probably get an AU or VST written and play with it - may be a UI will evolve. As well as the Synergy emulation mode, I wanted to add other features, like filter emulation (directly applying scalars to each operator according to some sort of response map is what had in mind here). The actual core is a handful of accumulates and a couple of table lookups. The Synergy did the look ups by holding a table of values and slopes so the interpolation was quick. This allowed them to generate better than 8 bit sines from 8 bit data. My plan was to move this to an FPGA at some point too.

Too many projects, not a massive enough planet.

Veronica