DSP Robotics Support

adamszabo wrote:Normal wavetable oscillators load a long wavefile with many different waveforms inside. So lets say there is a sine, saw, square, triangle etc... Then you create two "readers", one that gets the even, the other gets the odd waves. Then you create oversampled oscillators to play the waves and interpolate between them.

Yeah, I tryed to do that a long time ago... It consists in recording the wavetable to a note (C1 for example), in each period a new waveform would be set and the samples occupied by that frequency were calculated (to cut the wavetable at this sample lenght for extracting the waveform). Then the second "oscillator reader" would be displaced by 1 waveform and interpolated with the previous oscillator. The problem was that by alternating wave, the oscillator sounded grainy and bad, to tell the truth ... Maybe I'm not using the right modules or not applying the correct technique, since I did not take into account the aliasing and digital errors. ..
I will start working on a new model to see if this time I get a decent result.

Maybe this is a bit off topic, but I made what you might call a Wavetable Scanning synth ages ago. It has 9 signal sources which can be Martin’s oscillators or additive or drawn.

viewtopic.php?f=3&t=4419&p=24990&hilit=nine#p24973

The CPU is pretty good, thanks to Martin’s optimisation of my cross-fade modules. The CPU will vary depending on the source generators chosen of course.

Cheers

Spogg