Hi Paula, My soft synth is a programming language (interpreted or compiled) used to route audio and control signals between C++ modules. (See http://moselle-synth.com for details.)
It is currently a stand-alone PC application, while I develop the language and modules. Naturally my goal is to turn it into a plug-in usable by a DAW. I've also talked with a hardware developer about building a DSP-based hardware solution, mainly for lower latency and higher polyphony. But it seems like that's also a pretty good way to go bankrupt. While on the PC, I've used a thread-pool to increase voice output calculation, increasing polyphony. However I'm only using that for actual voice production, not for calculating wavetables. So in summary: no, FPGA is probably out of the immediate plans, but your suggestion of parallelization could certainly help and I've noted that on my to-do list. Thanks! On Tue, Apr 17, 2018 at 5:28 PM, <pa...@synth.net> wrote: > Hi, > > Have you considered moving to an FPGA? this way you could potentially do > a large portion of the processing in parallel. > > Paula > > > > On 2018-04-16 16:46, Frank Sheeran wrote: > > RBJ says: > > > are you making wavetables, Frank?? is that what you're doing? > > Well yes. > > More specifically, I'm adding Wavetable SYNTHESIS to my long-standing > software synthesizer. > > It's been generating waveforms the patch-writer specifies by formula, > and/or by setting individual harmonics, and the like, for years. It takes > a portion of a second to do for a single wave. I generate several > bandwidth-limited versions (by default 1/4 octave apart). Some call the > resulting data structure a mipmap, some call it a wavetable, but the > salient point is that there's only one spectrum (at least, at any given > pitch range). > > The problem is that now I'd doing it for say 32 or 64 or 256 waveforms at > once it can take a full second on a fast modern CPU. > > So, the simple symmetry-based solution I had before isn't really fit for > purpose. > > > > To all: thanks for all the pointers. I'm not a maths/acoustics guy, just > a humble software developer, but I'll work through all the references and > see how much I understand. > > > > > _______________________________________________ > dupswapdrop: music-dsp mailing list > music-dsp@music.columbia.edu > https://lists.columbia.edu/mailman/listinfo/music-dsp > >
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