![dexed dx7 emulator not working mac dexed dx7 emulator not working mac](https://i.ytimg.com/vi/gwV77TU_6Yg/maxresdefault.jpg)
My question at least: Have I overlooked something in the maths? Is there possibly anything different between FM and PM that causes the phenomenon of the “forbidden” partials (I can´t imagine as both are angle modulations)? Or is it a question/problem of coding/programming FM/PM? The results are very similar and the resulting graphs (number of irregular partials against the other mentioned parameters) are similar as well.
![dexed dx7 emulator not working mac dexed dx7 emulator not working mac](https://i.ytimg.com/vi/D3xCO8tB1kg/hqdefault.jpg)
I´ve made more than 5,000 measurings and I´ve set up the resulting sheets with DEXED, but also with: NI´s FM8, ImageLine´s Sytrus and u-he´s Bazille and the hardware synth Korg Volca FM. Or – I was on the brink of saying “of course” - with both frequencies (carrier and modulator) being constant: the stronger the modulation, the more irregular frequencies. Or with the carrier´s frequency and the modulation strength being constant: the higher the modulator´s frequency the more of these low irregular partials.
#Dexed dx7 emulator not working mac series#
I´ve made a series of measuring and found, that the higher the carrier´s frequency at constant modulation strength and constant C:M ratio, the more of these “irregular” frequencies occur.
![dexed dx7 emulator not working mac dexed dx7 emulator not working mac](https://i.ytimg.com/vi/zy6dDZGgAIQ/maxresdefault.jpg)
And a last example – returning to more “normal” situations – with fC=1,000 Hz and fM=5xfC and a modulation strength of 88% there is already 1 of these “unexplainable” partials. Or – to point at another extreme constellation - with fC=6,000 Hz, fM=7xfC and modulation strength at 75% there are 4 irregular partials. For example with the carrier´s frequency at 750 Hz and the modulator´s frequency at 30xfC and a modulation strength (output of the modulating oscillator) at 75% there are even 2 lower frequencies in the spectrum. DEXED – irregular frequencies in the FM/PM spectrumĪ heartly “Hello” and big “Thank you” for DEXED!Īccording to the maths of FM/PM of a sine wave by another sine wave there can´t be any frequency lower than the carrier´s frequency in the resulting spectrum, if the modulator´s frequency is twice the carrier´s or higher.īut - given certain circumstances – there are lower frequencies with the described constellation.