SWAY is a virtual instrument modeled after a classic FM/PCM synth from 1989. The goal is to have 100% patch compatibility and to get it sounding as close as possible to the real hardware. It can also function as a patch library manager for the hardware. Banks of 64 patches can be created and sent to the hardware using SysEx. It's currently still in development . FEATURES FM SYNTHESIS MODULE Advanced FM synthesis engine: 15 waveforms / 6 operators / 45 algorithms 3 configurable feedback paths Noise & PCM input Envelope generator per operator Velocity sensitivity Envelope rate scaling Level scaling FM ROUTING MATRIX Matrix view of the FM operator routing setup. Visualizes the connections of carriers, feedback paths and external sources, as well as the input levels. PCM SYNTHESIS MODULE Sample playback based synthesis engine: Envelope generator Fixed or key tracked pitch Velocity sensitivity Envelope rate scaling Ability to load the internal SY55/SY77 sample ROMs* Ability to load Yamaha Wavecard expansion ROMs* * Yamaha sample ROMs are not included with the plugin, for obvious reasons FILTERS Both synthesis modules include a resonant filter section: 2 filters (1 LPF/HPF and 1 LPF) Cutoff frequency control Resonance control Velocity sensitivity Envelope generator per filter Cutoff frequency key scaling LFOS Both synthesis modules include a multi LFO: 6 waveforms (triangle/saw up/saw down/square/sine/S&H) Configurable speed/phase/delay Amplitude/pitch/filter cutoff modulation targets In addition the FM synthesis module includes a sub LFO: 5 waveforms (triangle/saw down/square/sine/S&H) Configurable speed/phase/delay Delay/decay modes Pitch modulation target DYNAMIC PAN Both synthesis modules contain a dynamic pan: Panning controlled by LFO Panning controlled by an envelope generator 64 preset panning envelopes Custom panning envelopes EFFECTS Flexible FX section: 2 modulation effect units (4 algorithms) 2 reverb effect units (40 algorithms) 3 effect routing options SYSEX COMPATIBILITY Sway can work with SY55/SY77/SY99 SysEx: Load SY55/SY77/SY99 patches from SysEx dumps Send patches to your SY77/TG77 hardware using SysEx Manage patch banks More Info: https://www.sheafmusic.com/sway/
Sounds impressive. "It's currently still in development. I hope to release it in the second half of 2024." I guess that did not work out yet....
Thanks @paul_audioz for the information. I found the following at KVR, I quote: sheaf Sun Jul 20, 2025 8:52 am Had to do some last minute fixes for a problem that revealed itself when I did some more thorough testing in Logic, but I'm really ready to send out installers today. Thanks for all the offers to test! It's appreciated. Between all the offers going back to the first pages of the thread and my email inbox I've got more potential testers lined up than I can handle right now, so I'm not going to include everyone. I also decided to separate my plugin operation from my music, so I made a new label and website for the product: https://strydeaudio.com/sway. Still a work in progress. Source: www.kvraudio.com/forum/viewtopic.php?t=605810&start=705
I think the demo's really sound good. Also: to my ears I cannot hear any difference between the plugin and the original SY77!
It will be commercial, but there is no info on pricing yet. You'll likely have to wait for the launch for that.
Sway load Yamaha SY55 SysEx dumps Yamaha-SY55_TG55-Soundbanks-Collection - Free https://dreyandersson.com/blog/yamaha-sy55-soundbanks/
[Chapter 3] Evolution of Tone Generator Systems & Approaches to Music Production https://europe.yamaha.com/en/musical-instruments/keyboards/explore/synth-40th/history/chapter03/ Monster Synths: Yamaha SY77 Past The Presets Last edited: Jul 20, 2025 at 9:38 PM
