[music-dsp] Bandlimited morphable waveform generation

2016-09-15 Thread André Michelle
over time) waveform function f(x) excluding frequencies over Nyquist? Any suggestions are highly appreciated! ~ André Michelle https://www.audiotool.com ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu

Re: [music-dsp] Bandlimited morphable waveform generation

2016-09-15 Thread André Michelle
ave-shape morphing. In fact it is a solution (thanks for that) but I was hoping for something more elegant. I could phrase my question more general: Given any f(x): Is it possible to sample f(x) with a given sample-rate ignoring all frequencies (slopes) high

Re: [music-dsp] Bandlimited morphable waveform generation

2016-09-15 Thread André Michelle
> I could phrase my question more general: > Given any f(x): Is it possible to sample f(x) with a given sample-rate > ignoring all frequencies (slopes) higher than SF/2? > > > Couldn't you just implement a brickwall FIR filter in your signal chain, > after whatever signal you're deciding to gen

Re: [music-dsp] Bandlimited morphable waveform generation

2016-09-16 Thread André Michelle
l these problems - so easy they look at the first glance - ends up really complicated if you want to do the first thing that comes into your mind. Hope I can present the solution for you to fiddle around with online soon. Cheers! ~ André Michelle https://www.audiotool.com <https://www.aud

Re: [music-dsp] Bandlimited morphable waveform generation

2016-09-21 Thread André Michelle
ned by the browser. No way to adjust it. #Hard Sync The only solution I see here is to quickly blend the amplitude (f(x)) of the phase from the current value to zero when sync is happening. Any further suggestions appreciated! ~ André Michelle https://www.audiotool.com <https://www.audi

Re: [music-dsp] Bandlimited morphable waveform generation

2016-09-22 Thread André Michelle
discontinuities is so small that it rarely > matters if you are running at 88.2 / 96 khz. I am missing to many aspects of your suggestion. Any hints where to learn about this would be appreciated. ~ André Michelle https://www.audiotool.com <https://www.audiotool.com/> _

Re: [music-dsp] (no subject)

2018-09-28 Thread André Michelle
> current = previous * multiplier + delta. Hi Frank, we developed the same idea six years ago for www.audiotool.com Werner Van Belle worked the math out: http://werner.yellowcouch.org/Papers/fastenv12/index.html Cheers ~ André Miche

Re: [music-dsp] variations on exponential curves

2018-10-01 Thread André Michelle
Hi Frank, the solution Werner solved is working the same way. The multiplier and delta gets computed once when receiving all necessary data. For each sample you then only have to run one multiplication and one addition plus reassignment. The math behind it looks a bit complicated but for very