Prophet 600 firmware upgrade revisited

The upgraded Prophet 600 offers two envelope shapes: exponential and linear. These are software generated and in versions 2.0 and 2.1 RC3 they are really exactly that: a pure exponential shape and a pure linear shape. Some users argue that a musical choice is somewhere in between. To the ear, the exponential shape drops very quickly at the beginning and then it tails off long. The linear shape on the other hand is thicker in the early decay phase but then it drops hard to zero. The human ear is stunningly sensitive to envelope shapes, even at very low volumes. In a recent nice YouTube video Starsky Carr directly compares the Prophet 5 (rev 4) envelopes to the Prophet 600 addressing exactly this finding:  Prophet 600 vs Prophet 5 // Is the 600 a better value option? - YouTube Now: the 2022 firmware has completely revised linear decay and release shapes, which are linear at the start but then tail off smoothly. To some degree the shape was inspired by the Prophet 5 rev 1/2 envelope shape

Dear all users of an upgraded Prophet 600, The beta release for the 2022 firmware upgrade is now available! You can download the code and new User Manual here:   Release v2022-beta.1 · image-et-son/p600fw (github.com) . *** NOTE: this is a beta release and it is therefore not the final release but rather very close to it ***  *** NOTE: the code and manuals come with no warranty whatsoever, you carry out updates at your own risk. Always secure patches before updating the firmware. ***  Note: in case you're totally new to the GliGli upgrade you would need to modify your Prophet 600. In this case you should consult the documentation provided by GliGli. GliGli's Prophet 600 blog ( My Synthesizer stuff: p600fw (gliglisynth.blogspot.com) ) contains the links to the technical manual. If you're already running version 2.0 or version 2.1 RC3 you should be familiar with the upgrade procedure either by USB or by MIDI. Please also refer to the User Manual. If you want to actively parti

The GliGli upgraded firmware uses a patch parameter menu based on the number pad for changing things like vibrato, additional LFO options, envelope shapes etc. Most users find menu diving a nuisance. Since there are more than 10 parameters in the firmware upgrade and only 10 number buttons (0...9) the firmware even needed two "pages" of parameters. A double press of each number accesses an additional parameter. What's more, the location of parameters on the number pad was not completely systematic, e.g. pressing "2" would access the Vibrato Speed, but pressing "2" twice was accessing the LFO Range. A cheat sheet from Synthgraphics (list of parameters and their location) does help, as does the fact that the parameter name is scrolled through the display. Overall, not ideal but still not something one can't live with. The new 2022 firmware version to be published soon has even more parameters so that two pages are not enough. Therefore a different co