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.
>
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