SynthMakernix ·
Hey all, I was wondering if anyone could take a look at this and tell me if it's AM. I wonder because it sounds just like RM.
Cheers, Nick
Is this AM?
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kirkagur ·
ring modulation is AM ......... after all
nix ·
Hey there, So they are one and the same as far as their sound goes? Wishing contents in creation, nix
oddson ·
My understanding is that Amplitude modulation is the more general term. Ring modulation is typically used to describe modulations where the modulating signal is not harmonically related to the fundamental of the note. But in both cases wave amplitudes are multiplied together -- as opposed to one wave modulating the frequency of another (FM) or the phase of another (PM). I believe ring modulation also often adds a DC offset to the modulating signal although this can be done with harmonically related signals too.
Of course this could be one of those areas where my ignorance shows (don't let my 2500+ posts here fool you into thinking I know what I'm talking about!). 😉
P.s. you've got to start uploading images and OSMs directly to the forum. There's no need for file-sharing sites here anymore.
nix ·
Thanks oddson, That clarifies some. I'll just include the example shown in my plug, as it can be controlled with that knob and call it AM. Would it be possible to do phase modulation with 2 samplers?(and you think you aren't all that suss!) It slipped my mind that I could post up directly, I'll do so in future. Wishing contents, nix
nix ·
Hey, After reading a little further I realize that PM is essentially FM. Cheers, Nick
NekroDisko ·
I have learnt that AM adds one oscillators out signal to the other osc, and ring multiplies the signals instead. Is this correct? 😮
nix ·
Hey, Both AM and RM are 2 signals multiplied together, they sound the same. With AM you have a mod depth control though. If you want to try AM I can post the equation? Cheers, Nick edit: here is the equation- y(t) = (1 + a*m(t)) * c(t)
electrogear ·
Isn't 'typical' AM modulator normally slower than RM? RM being 2 signals in the audio range, and AM being 1 signal (carrier) in the audio range, and one (modulator) in the <20Hz range for vibrato kinda sounds? This is what I've always thought, but never had it formally explained to me. Maybe I'm completely wrong, in which case, sorry!
Acrobat ·
electrogear wrote: Isn't 'typical' AM modulator normally slower than RM? RM being 2 signals in the audio range, and AM being 1 signal (carrier) in the audio range, and one (modulator) in the <20Hz range for vibrato kinda sounds? This is what I've always thought, but never had it formally explained to me. Maybe I'm completely wrong, in which case, sorry!
What took my attention is the usual ambiguity in synthesis terms: in Frequency Modulation, "Frequency" is the MODULATED characteristic (OBJECT), in Amplitude Modulation, "Amplitude" is the MODULATING characteristic (SUBJECT).
That's confusing! 😠
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