Six-op FM synth

[loopier]

@yaxu suggested in this forum thread to add the synth to the repo.

This is my first ever pull-request and contribution to another repo. Please forgive me if I'm not doing things properly. I'm open to suggestions and guidance on doing so.

[bgold-cosmos]

This is fun! The output always seems to be at peak level, it might be worth turning it down a bit; I think somewhere around -10dB would put it about even with a typical Tidal sample.

Since there are so many parameters, it might be nice to have some examples or "presets". This could be in SuperDirt or even on the Tidal end, e.g. fmpreset1 = mod11 1 # detune1 1 # detune2 1 # mod12 20 # ratio1 1.02 # ratio2 2

[loopier]

I will review the output level, thanks.

Where should I add the examples or "presets" in Tidal? If I do it in SuperDirt, should I do it as new SynthDefs, or is there a better way to do it?

[bgold-cosmos]

I don't know about the "best" way to do it, but one example might be to look what I did with the 'voice' parameter in superhammond. Basically a big multidimensional array of parameter values that you can dial "presets" from using SelectX with the voice parameter.

[loopier]

I reduced the output level by -15dB and added a few random presets that can be accessed with the voice parameter as you suggested.

I also added a feedback parameter. With manual feedback mods (mod11, mod22, ... mod66) it must be set to 1 in order to hear them.

I thought it would be more fun to have random presets than predefined ones, so the musician won't know how they are going to sound. The presets are generated with random values every time the SynthDef is evaluated. They will be different on every machine, or even on every session if the SynthDefs are evaluated on startup. Are they?

[telephon]

@loopier ready to merge or do you want to still change something?

[loopier]

@loopier ready to merge or do you want to still change something?

I'm ready! Just made a last revision and fixed the conflict. Thanks!

[loopier]

Thanks!

[telephon]

thank you!

[telephon]

I just noticed that the random numbers in the presets are fixed in each synthdef, so they will be the same for each note, but different on each restart of superdirt. Is this intended?

In principle, it would be possible to have presets in superdirt, not in the synthdef. But that's for another time, I think.

[loopier]

I just noticed that the random numbers in the presets are fixed in each synthdef, so they will be the same for each note, but different on each restart of superdirt. Is this intended?

Yes, it is. I thought it would be more fun to have random presets than predefined ones, so the musician won't know how they are going to sound.

In principle, it would be possible to have presets in superdirt, not in the synthdef. But that's for another time, I think. Sure!

[telephon]

OK, good!

[telephon]

btw. the detunes are integers between -7 and 7, is that intended? Array.fill(6, {rand2(7)}),

[loopier]

yep, also intended.

[loopier]

But I may change it to floats if you reckon it would be better

[telephon]

No, not necessarily. It is an aesthetic choice. With whole number detunes, you get a more predictable pattern of multiples of one second beatings, I suppose? I haven't tried.