Setup 1: oscillator with the carrier frequency and a oscillator modulating the carrier frequency.
Setup 2: two independent oscillators, one set to the carrier frequency and one with the modulation frequency.
Do we hear the same sound and/or timbre?
If so, this would mean that our ear just does what the FM synth does internally.
This was a side question in this thread and thank you for answering already @Kevin Reid, but I still would like to discuss this.
The following article shows two signals, playing together, and there are two graphs, one how they overlap and one how they are heared by our ears. Can anyone explain me, how that second graph would differ, if that previous signal would just be frequency-modulated before its played?
Background: I have the possibility to create many signals, but have only one frequency modulator parameter per signal. I have the idea, that I can just play the sounds together to "simulate" a signal going through multiple modulators. But somehow I think this is not working in practice.