Comments (6)
I did discover the PolyBlep node after digging around a little, but for some reason I'm not able to schedule frequency changes on this node.
polyBlep->frequency()->setValueAtTime(110, currentTime); // does not work, but does work on oscilltor node
but using setValue works
polyBlep->frequency()->setValue(110); // works
Connecting nodes for an LFO, like oscillator->gain->(polyBlep.frequency) also does not work, but works fine for oscillators.
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I managed to fix this by basically duplicating the amplitude logic for frequencies in PolyBLEPNode::processPolyBLEP
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Another problem is the lack of detune param on the PolyBLEPNode.
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I managed to implement the detune param for the polyBlepNode as well by studying the code for oscillator.
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For the polyBlepNode to be a useful substitution for the oscillatorNode, it might also be a good idea to support a pure sine waveform. I added this to my fork, so I don't have to swap out the node just to get a sinewave.
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Thanks for these notes. PolyBLEP is still under construction, but should ultimately be controllable as you note. We haven't worked on PolyBLEP recently, but parameter rate control was the thing holding back a replacement of the OscillatorNode implementation. I'd be delighted to get a pull request that takes PolyBLEP over the finish line.
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Related Issues (20)
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