SWAY - a synth modeled after the Yamaha SY77

[gentleclockdivider]

These extra waveforms are basically serving the same role as you would get from a stacked pair of sine wave operators on the DX7.

The extra waveforms found on the tx1z are indeed using the lookuptable that stores a quarter sine , by reading these in different directions we get the extra waveforms
But I disagree you can get the tx1z waveforms by just using stacked sines on the dx7
Try it ..

Sure not a problem, if analyze what they are actually doing with harmonics is rather easy to recreate with a pair of operators


W1 Sine Wave
W2 Odd Partials 1,3,5,7 1:2 I=0.5 V=12
W3 Even Partials 1,2,4,6 1:1 I=0.5 V=12
W4 Partials 1,2,3 1:1 I=1.0 V=32
W5 Partials 1,2,3,5 1:1 I=1.5 V=65
W6 Partials 1,2,3,5 1:1 I=1.7 V=75
W7 Partials 1,3,4,5 1:1 I=3.7 V=85
W8 Partials 1,3,4,5 1:1 I=4.0 V=87

I assume the first digits are the ratios of the stacked operators ( so 1 tower) , and then another tower of 2 operators ?
Trying to get wave 4 , no luck
By stacked I assumed you meant pure additive ( which it's not ) or do you mean stacked tower (thus fm ) ?
Anyway , It's near impossible to get the unipolar waves ( I'll keep trying )

[IvyBirds]

I assume the first digits are the ratios of the stacked operators ( so 1 tower) , and then another tower of 2 operators ?
Trying to get wave 4 , no luck

See my edited response that I was typing as you were writing this. Essentially none of the TX81Z waveforms are very complex from a harmonic standpoint, and you can use a stack of two Operators to reproduce the harmonics of any of them rather easily

If you can reproduce the harmonics you reproduce the timbre, that's the way our brains and ears reproduce sound

If you play middle A using any of them the TX81Z is going to play that waveform 440 times a second. That waveform is static and will always have the same harmonics

If I can synthesize those same harmonics and hit your ear drum with them 440 times a second your brain will hear the same timbre at the same pitch. That's how Yamaha/John Chowning style FM Synthesis works

What you are focusing on is reproducing that waveform in an analog way, I am not worried about making an Analog of the original sound, I am just concerned with the actual harmonics of the sound and how the listener will perceive it

It's two sides of the same coin. You want sample playback of a violin timbre. I don't care about that. I want to use FM to synthesize the harmonic content of that Violin so the listener hears the violin

Yamaha was very deliberate when they picked those waveforms because they all have unique sonic harmonic signatures that are commonly found in other instruments that you might want to synthesize

On the DX7 what would require a pair of FM operators synthesizing those harmonics, the TX81Z can do just by playing a single cycle waveform that has the same harmonic signature

It's the same destination via a different route, or two different recipes made by two different chefs using different ingredients that results in the same taste

[Weasel-Boy]

Just a quick question: when is this plugin supposed to be available to the general public? What's that timeframe like?

[gentleclockdivider]

Nobody knows

[sheaf]

I don't want to give any more time estimates for a release, but I can report my progress.

All bugs I could find myself are fixed. For the beta version I just need to tighten up the measurements of the filter envelope rates. Then I need to do some performance optimization. AFM patches will all filters on currently take up quite a bit of CPU.

About 30% of the samples are done, so there's still a lot of work there. And I need to make a lot of presets too.

[oldmica]

Nobody knows

?

[gentleclockdivider]

Nobody knows

?

What's so hard to fathom ?

[fmr]

And I need to make a lot of presets too.

If the VST version will be able to read SYS-X from the hardware (preferably, importing through MIDI file), I wouldn't bother with that. There are plenty of banks available. I have a huge collection stored in SoundDiver format that can be exported as MID file (including my own).

[oldmica]

Yeah, I'm looking for that particularly and hoping it's in there, but no worries if not. This will replace my SY and I'm looking forward to it. Thanks for the update @sheaf!

Edit: please let me know if you need beta testing (PM me), glad to chip in!

[IvyBirds]

I don't want to give any more time estimates for a release, but I can report my progress.

All bugs I could find myself are fixed. For the beta version I just need to tighten up the measurements of the filter envelope rates. Then I need to do some performance optimization. AFM patches will all filters on currently take up quite a bit of CPU.

About 30% of the samples are done, so there's still a lot of work there. And I need to make a lot of presets too.

Not sure if you are going to make the controls visible to MIDI CC or not, but if you are and want a Beta Tester for that let me know. I would also be happy to design a template for the Novation Launch Control XL controller that you could then give away with the plugin. I built one for the Plogue OPS7 DX7 emulator. Either way when I get the plugin I will make the template and share it here

[cslevine]

HAPPY to see news from Sheaf. i think we have to pe patient and not put too much pressure to one. What Sheaf is doing is unique in the world, and even if there is some few things ( GUI, monotimbral ) the SY emulator will bring me back with lot's of compositions going forward to my todays effects and orchestra !! ( + let me "fixing" all my works entirely into some virtual machine forever and ever for far future after my life, with all working CUBASE + VSTies, even by future humain generation which could run my studio in front of their eyes and ears, ( i.e. for learning of history... ? ) )

[Krakatau]

HAPPY to see news from Sheaf. i think we have to be patient and not put too much pressure to one. What Sheaf is doing is unique in the world, and even if there is some few things ( GUI, monotimbral ) the SY emulator will bring me back with lot's of compositions going forward to my todays effects and orchestra !!

+1

[Uncle E]

If the VST version will be able to read SYS-X from the hardware (preferably, importing through MIDI file), I wouldn't bother with that. There are plenty of banks available. I have a huge collection stored in SoundDiver format that can be exported as MID file (including my own).

Agreed, plus we can all contribute patches.

[gentleclockdivider]

Even if sway is only 80-90% in the ballpark , I'dd stil buy it for the simple reasons that :
1- the SyY-TG architecture is amazing
2- we have an editor for the hardware
Sheaf , take all the time you need ( but do hurry up )

[DocAtlas]

I am greatly looking forward to adding SWAY to my arsenal and wish Korg would make standalone MOD-7 plugin from Korg Oasys/Kronos

I agree. I am really anticipating having an SY77 in plugin form, and I don't understand why Korg did the OP6 when they already had the more powerful MOD-7 engine.