@@christdolphin69 For fun

Thanks! Yeah exactly, I'm not familiar with the math at all but that basically describes what I noticed with it lol 😂 it's always cool to hear the math behind shit like that.

Yeah that's a different idea than PM, but they're still in the family of audio rate modulation. So AM is simply just modulating the volume, imagine putting a sine wave oscillator into a VCA and then modulating it with a sine LFO. When the LFO is in its positive part of the cycle, then you hear the sine oscillator get louder and then quiet down as the LFO approaches 0. Then the whole time the LFO is negative, you still hear silence because the VCA doesn't respond to negative voltages. Ring mod is very similar, except when the LFO is negative, it inverts the phase of the sine oscillator. That gives it a different timbre and causes the fundamental frequency to cancel out, so it was used to make metallic sounds in old analog drum machines and stuff. Look up "Runningonair Ring Modulation vs. Amplitude Modulation" and he has some good graphics in the first half of his video that illustrate what's happening to the signal in AM vs RM.

@@cooksoni.a Thank you so much! That's soooo helpful

I am mathematically challenged, so I could be wrong there lol. I don't think Yamaha ever explained why they implemented it as PM, but the resources I've read have indicated that PM is cheaper because you're adding instead of multiplying, and PM is more stable with fewer components. Feedback could have been the reason they chose PM, but I was under the impression it was more like a welcomed byproduct.

Cool! If you have other questions just let me know.

I've gotten that before lol 😂

Thanks! I haven't seen that, I'll see if I can find it.

No I haven't, I'll definitely check them out

Yes I'm using Max/MSP. gen~ is basically a programming language/environment you can use inside of Max to do more detailed DSP programming because it runs at audio rate, and MSP (Max's native DSP framework) runs in blocks of samples at a time, so you can't get as detailed as you can in gen~. Pure Data is another programming language that has a lot of similarities to Max, and in fact both Max and Pd have a common lineage because they were both created by developers at IRCAM, I think. But Pd is free and open source which is cool. I can't remember the specific differences between Max and Pd when it comes to DSP, but I think in Max you can get more granular with your code, especially when you're using gen~

Thats so sweet lol, thank you ❤

@@tracyharms3548 yes thats right. And about your other comment, it’s not a ratio between the two operators, its a ratio to the midi note. So if you tell it to play an A, that corresponds to 220hz for instance. So the ratios of the operators are ratios to that frequency, 220hz. A ratio of 1 is 220hz, 2 is 440hz, etc. That relationship is the same no matter what midi note you tell it to play. So if you have a sequence going, the ratios of the operators are always going to be in a relationship of the note youre playing times 2 or 3 or 4, etc

@ Since I am approaching your tutorial with no involvement of MIDI, this accounts for some of my confusion. Thanks for your instruction, regardless.

@ oh ok, well its the same with using like a modular sequencer that uses voltage to control the pitch. It’s just whatever pitch you tell the fm synth to play at, the ratios are going to be integer multiples of that pitch

@@tracyharms3548 so ratios are just multiples of a given frequency. For instance, 220hz is an A note. If you multiply that by two, it gives you 440hz. By 3 its 660, 4x is 880, etc. This idea of multiplying a given frequency by an integer reflects whats known as the harmonic series, and thats using those ratios in FM gives you a harmonic sound. Look up a video on the harmonic series on youtube and it might give you a better idea, its really interesting. But put simply, the concept of the ratio of one operator to the other is just what pitch each of the operators are at

@@cooksoni.a ”When your modulator is an integer multiple of the fundamental frequency then all of your sidebands will be in the harmonic series.” Does ‘fundamental frequency’ here mean carrier frequency?

@ it technically means the midi note that youre playing it at, because you can also change the carrier’s frequency by adjusting its ratio. But in most cases youll be using a carrier with a ratio of 1, so in that case yes. Because 1 times n frequency equals n, meaning that its the fundamental freq that is equivalent to whatever note youre playing it at

@ I imagined ‘ratio’ means the ratio of the frequencies of the two operators. If the carrier can meaningfully have a ratio that’s independent of the modulator’s frequency, I am lost.

@@longgianghai5420 what king of setup are you using? Lemme know what the settings and algorithm are

Oh you know what, I forgot that Operator doesn't have the correct phase, it's a weird quirk. And I think that the feedback paths are not independent from the level of operator you're feeding back, so you won't be able to get the feedback level high enough before using it to modulate another operator. So unfortunately it seems like you can't do this trick in Operator, sorry about that.

Props for catching it was a video mixer! Yeah it's a Panasonic WJ MX50. I took a gamble with it on ebay and it ended up being in really good condition. I fuckin love it

@@cooksoni.a Lol good stuff! Into the music thing but dabbling into broadcast/analog video equipment as well and it caught my eye haha. Thanks!

lmao 😂

@@quesadillasdemedianoche well thank you but thats how i talk, so feel free to not listen lol

@@cooksoni.a I did not mean to sound rude, but I guess there is no way to say it in a comment box that it does not sound somewhat awkward. I'm sorry.

@@quesadillasdemedianoche it's fine, sorry I was rude. I just can't really change the way I sound

That's true, it's just not a very impressive drum machine to me honestly. I like the tone of the operators on those soundblaster chips, but I never really liked the way they were configured in the built in drum mode. There's not a whole lot of fm going on in it, which confused me bc I thought the chip architecture allowed for something more complex, but I don't fully understand it. In my opinion it doesn't end up sounding very interesting