Martin, thanks for (re-)posting this. I had a look at your website and found some articles, which are very interesting. The idea of the reverse IIR filter is super brilliant.
Best, Steffan > On 21.02.2019|KW8, at 19:33, Martin Vicanek <martin.vica...@web.de> wrote: > > You can have both: A (hyper)stable quadrature oscillator without the need to > adjust states upon frequency modulation, and without the need to counteract > amplitude runaway: > https://vicanek.de/articles/QuadOsc.pdf > <https://vicanek.de/articles/QuadOsc.pdf> >
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