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SEQUENTIAL/DSI => Prophet => Prophet Rev2 => Topic started by: shiihs on April 03, 2018, 01:12:51 PM

Title: free book disassembling the rev2 presets
Post by: shiihs on April 03, 2018, 01:12:51 PM
Hi all,

Let's be honest: Rev2 is a monster. And monsters can be hard to tame.

Factory presets show a lot of what can be accomplished using the synth, but understanding exactly how/why they work is a challenge. Yes, I'm aware of the "compare" button and several software interfaces but in real vintage style (I didn't get an *analog* synth for nothing, right?) I felt the need to have a book.

So I sat down and made one, reusing, amongst other things, some formidable work done by DSI forum users Razmo and Gerry Havinga. And you, dear reader, get to download and read it entirely for free! Officially the best known way to explore your synthesizer in bed! It shouldn't come as a surprise that the book turns out to be a monster too, counting way over 1000 pages (don't print this at home, folks ::) !).

Since this is a first version of the book, it may have flaws, critical omissions, etc. If you happen to find such errors or  omissions, please be so kind as to report an issue to me, as described in the first pages of the book, on https://github.com/shimpe/sc-prophet-rev2 This is also the web address where you can suggest code changes or spec sheet template changes.

This book will always remain free under a creative commons license. Future updates to the book - if any - will be announced in this thread.

Note that the software I created to make this book is available for download too, and it allows you to automagically create similar sheets for your own REV2 patches, but at the moment it's not (at all!) user friendly - i.e. probably usable for hardcore tech nerds only (and unfortunately I have deadlines for other projects which means this situation will not change any time soon). If you do try and use it however, but get stuck, be sure to reach out, and I'll make a reasonable effort to help you figure things out.

In the mean time, I hope you will find the book as intriguing as I do!
For your convienience here's the download link: https://github.com/shimpe/rev2/releases

Enjoy!
Title: Re: free book disassembling the rev2 presets
Post by: rmachin on April 03, 2018, 02:07:58 PM
Wow great work — it being April 1st I was half expecting 1000 pages of the scratch patch!
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on April 03, 2018, 02:49:52 PM
Wow great work — it being April 1st I was half expecting 1000 pages of the scratch patch!

Hah! Turns out it's an easter egg after all. Turns out there's a problem in the software leading to wrong numbers in the "amount" of modulation in the mod matrix. Sorry for getting false hopes up. I will do my best to fix it as soon as possible. This is my punishment for spending more time playing the synth than actually testing the software :s (You have to admit it's a monster synth :D )
Title: Re: free book disassembling the rev2 presets
Post by: Gerry Havinga on April 03, 2018, 10:18:55 PM
Brilliant work, absolutely amazing and automagically - even better. Now I have a good reason to audit all the factory patches I haven't listened to yet. Thank you!
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on April 03, 2018, 10:48:51 PM
Brilliant work, absolutely amazing and automagically - even better. Now I have a good reason to audit all the factory patches I haven't listened to yet. Thank you!

Better wait until I manage to fix the problem. It turns out to be a bit trickier than I anticipated. The devil's in the details :)
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on April 04, 2018, 04:44:23 AM
Rejoice! For a new version of the book has landed with many fixes: https://github.com/shimpe/rev2/releases

Sorry for the inconvenience caused by the errors in the previous version. Although the new version is improved, there's still room for errors, so if you notice something odd/wrong/missing, feel free to log an issue.

- wrong numbers shown in modulation section (and some other sections)
- wrong numbers shown in track 4 of gated sequencer
- missing pressure controller in template sheet

You definitely want to get the new version from https://github.com/shimpe/rev2/releases !

(Edited to add: it'd be great if a moderator could remove the old link from the first post, as the google shortener service is designed to preserve all content it links to forever...)
Title: Re: free book disassembling the rev2 presets
Post by: theAndroid on April 05, 2018, 06:31:19 AM
Great work !!
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on April 05, 2018, 04:20:53 PM
It has come to my attention that in the previous version of the book,
the 4 pole/2 pole selection was not shown correctly.
There's a new version of the book here: https://github.com/shimpe/rev2/releases
Title: Re: free book disassembling the rev2 presets
Post by: timboréale on April 09, 2018, 07:51:34 PM
Great work, thank you! Wondering if it wouldn't make more sense for you to include a compiled PDF as part of the commit for each change on GitHub so you don't need to keep updating Google links?

Also, could you include a blank spec sheet at the end of the document so we can copy it for our own (handwritten) patch notes?
Title: Re: free book disassembling the rev2 presets
Post by: Gerry Havinga on April 09, 2018, 10:28:29 PM
Great work, thank you! Wondering if it wouldn't make more sense for you to include a compiled PDF as part of the commit for each change on GitHub so you don't need to keep updating Google links?

Also, could you include a blank spec sheet at the end of the document so we can copy it for our own (handwritten) patch notes?
Already done see: https://gezz.eu/tutorials/DSI_Prophet_Rev2_Parameters_Template.pdf
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on April 10, 2018, 01:26:09 AM
Great work, thank you! Wondering if it wouldn't make more sense for you to include a compiled PDF as part of the commit for each change on GitHub so you don't need to keep updating Google links?

GitHub doesn't really like uploading big binary blobs, but I figured 11MB was not too bad, so I created a repository with the latest version here: https://github.com/shimpe/rev2/releases . If you have/create a github account, it's possible to follow the repository and be alerted whenever a new version is pushed.
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on April 11, 2018, 04:36:34 PM
A new version of the book is ready for download at https://github.com/shimpe/rev2/releases

This version fixes 5 issues:

#1 error in voices on page 789
#2 osc 1/2 separate glide values missing
#3 exclamation mark doesn't appear correctly in index
#4 update intro paragraph
#5 add empty template for people to fill in

Have fun!
Title: Re: free book disassembling the rev2 presets
Post by: greyanaroth on May 23, 2018, 03:46:04 PM
This is great work! Thanks so much for the effort and the clean sheets :)
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on June 05, 2018, 12:03:17 AM
Hurray! There's a new version of the book that fixes the following two issues:
#6 sync checkbox appears too high
#7 missing arp range, repeats and relatch information

As a bonus, the download now includes a separate text file collecting some tips&tricks from the forum
(annotated with the author of the tip - please let me know if it contains errors or if you have things to add!).

As usual, get it here: https://github.com/shimpe/rev2/releases

You will want to click one of the links that says "Source code" (which, despite the name, contains a .pdf file and the bonus text file; the real source code can be downloaded per the instructions in the book itself).

Happy analyzing!
Title: Re: free book disassembling the rev2 presets
Post by: HOTBEACH on June 27, 2018, 12:49:01 PM
Wow, thanks! Just what I've been looking for, just bought me a lovely rev2 16 voice, feel like a kid.....so thanks can feel your passion for this!
Title: Re: free book disassembling the rev2 presets
Post by: VicKorfTron on June 30, 2018, 01:52:25 PM
Wow. Thank you so much for the hard work.  8)
Title: Re: free book disassembling the rev2 presets
Post by: Tequila-is-MIDI-compliant on July 04, 2018, 10:10:53 AM
Thank you so much for this! A most welcome tome of knowledge. Just found a use for that iPad.
Title: Re: free book disassembling the rev2 presets
Post by: discorules on July 06, 2018, 06:04:37 AM
Great work, thank you for the effort :D
Title: Re: free book disassembling the rev2 presets
Post by: gdhsu on July 07, 2018, 05:14:14 PM
Thank you so much!! Just picked up the Rev2 and I am a newbie in analog synths. This is really helpful in learning how certain sound was created

Gordon
Title: Re: free book disassembling the rev2 presets
Post by: MaryManor on July 25, 2018, 10:02:00 PM
Thank you, shiihs.  A great contribution and very helpful.
Title: Re: free book disassembling the rev2 presets
Post by: Grotevos on August 15, 2018, 02:10:30 PM
Thanks a bunch for this! I got myself a rev2 a week ago and was really having a hard time getting into it, propably because I'm so used to my Peak. I was about to give up but then I found this and recreated 3 programs while reading the manual on every parameter I was changing. Today I created 3 totally different sounding patches (they even sounded more or less as planned)and I'm really starting to love this synth! One question: In some programs the filter env amount is set to zero without an lfo or any other source opening it up, while for example, the filter env attack is set to a value. Why is this? Does this still have some effect? Or does key amount activate the filter env? Or are these errors in your book? Thanks Again for the work you have put in this, it's been a great help!
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on August 15, 2018, 03:23:27 PM
One question: In some programs the filter env amount is set to zero without an lfo or any other source opening it up, while for example, the filter env attack is set to a value. Why is this? Does this still have some effect? Or does key amount activate the filter env?

I'm afraid I'm not the best person to answer the question in depth. If you start from a basic patch, then reduce the cut-off frequency until you get a somewhat muffled sound, you can turn the env amount button and hear the influence it has on the tone. By playing with the velocity knob you can make the filter open more as you play louder. Key amount is more about making the filter open more as you play higher notes. By adjusting the env amount you can regulate more the overall level. I think of the env amount as a kind of "gain" for the filter envelope if that makes any sense. By making the env amount negative, you flip the filter envelope upside down. Not claiming that my insights are 100% correct or >1% illuminating. When it comes to sound design, I'm really a total n00b. I've made the book as an aid in my quest for insight, but I've noticed I tend to prefer playing, composing and improvising over sound design, so I haven't really made enough progress in that area yet. Some day I'm sure I'll get to it ;)

Or are these errors in your book?

That's possible too of course! You can easily verify it for yourself by selecting the patch you are examining, then turn the knob you want to know the preset value of, then press the "compare" button. The preset number should appear when the compare button is activated and display the currently configured value again when you deactivate the compare button.

If you do find errors, please be sure to report them.
It's a lot of information to proof-read for occasional errors :)

Thanks Again for the work you have put in this, it's been a great help!

You're welcome! I wish I could complement it with deep insights about sound design, but I haven't reached that level (or any level, really) of proficiency yet.
Title: Re: free book disassembling the rev2 presets
Post by: jg666 on August 15, 2018, 10:47:22 PM
Many thanks from me too :)
Title: Re: free book disassembling the rev2 presets
Post by: MasterWoofie on September 18, 2018, 07:55:42 AM
Most likely I'm being brain-dead... but I can't figure out how to download the book. Clicking on the 0.0.5 link doesn't appear to do anything. This is what I see...
Title: Re: free book disassembling the rev2 presets
Post by: Murphy on September 18, 2018, 09:38:02 PM
Thank you for putting this book together. Both your book and tipsheet are a great help to me.  -Murphy
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on September 19, 2018, 06:24:40 AM
Most likely I'm being brain-dead... but I can't figure out how to download the book. Clicking on the 0.0.5 link doesn't appear to do anything. This is what I see...

Yes it's somewhat non-intuitive: on the screen you see, click the "source code (zip)" link. Inside the .zip file you'll find the .pdf file.
Title: Re: free book disassembling the rev2 presets
Post by: MasterWoofie on September 25, 2018, 01:25:01 PM
Most likely I'm being brain-dead... but I can't figure out how to download the book. Clicking on the 0.0.5 link doesn't appear to do anything. This is what I see...

Yes it's somewhat non-intuitive: on the screen you see, click the "source code (zip)" link. Inside the .zip file you'll find the .pdf file.
Thanks a bunch!
Title: Re: free book disassembling the rev2 presets
Post by: felicidade1 on October 07, 2018, 09:21:21 PM
Thank you very much!
Title: Re: free book disassembling the rev2 presets
Post by: maxter on October 08, 2018, 10:34:52 AM
One question: In some programs the filter env amount is set to zero without an lfo or any other source opening it up, while for example, the filter env attack is set to a value. Why is this? Does this still have some effect? Or does key amount activate the filter env?

I'm afraid I'm not the best person to answer the question in depth. If you start from a basic patch, then reduce the cut-off frequency until you get a somewhat muffled sound, you can turn the env amount button and hear the influence it has on the tone. By playing with the velocity knob you can make the filter open more as you play louder. Key amount is more about making the filter open more as you play higher notes. By adjusting the env amount you can regulate more the overall level. I think of the env amount as a kind of "gain" for the filter envelope if that makes any sense. By making the env amount negative, you flip the filter envelope upside down. Not claiming that my insights are 100% correct or >1% illuminating. When it comes to sound design, I'm really a total n00b. I've made the book as an aid in my quest for insight, but I've noticed I tend to prefer playing, composing and improvising over sound design, so I haven't really made enough progress in that area yet. Some day I'm sure I'll get to it ;)

Or are these errors in your book?

That's possible too of course! You can easily verify it for yourself by selecting the patch you are examining, then turn the knob you want to know the preset value of, then press the "compare" button. The preset number should appear when the compare button is activated and display the currently configured value again when you deactivate the compare button.

If you do find errors, please be sure to report them.
It's a lot of information to proof-read for occasional errors :)

Thanks Again for the work you have put in this, it's been a great help!

You're welcome! I wish I could complement it with deep insights about sound design, but I haven't reached that level (or any level, really) of proficiency yet.

Without certainty, this might well be intentional programming, so that when playing the patch you could introduce the already programmed envelope to affect the filter, by using the env amount knob, to accentuate live playing for instance. Just like using the pitch and mod wheels.
Title: Re: free book disassembling the rev2 presets
Post by: OrionPirate on December 21, 2018, 10:08:43 PM
Awesome job!

I got my Rev 2 today, understood the first few presets, then go blown away by the complexity of so many of them. I'm going to learn so much from reading this. Thank you!!
Title: Re: free book disassembling the rev2 presets
Post by: Alphacentaury on December 25, 2018, 03:32:38 AM
It seems to be an incredible corrective work ! But I have 3 questions of noobs :

1•The last Official firmware for REV2 8 is correct or is your big work still actual?

2•to beneficiate to all your corrective patchwork, all download and the latest one or the latest contains all and is a combo ? (Logic, but the history describes just New actions of New

3•when you correctiv patch is definitfly installed , te official latest firmware of REV 2 8 erases It or not ?
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on December 25, 2018, 06:50:48 AM
It seems to be an incredible corrective work ! But I have 3 questions of noobs :

1•The last Official firmware for REV2 8 is correct or is your big work still actual?

2•to beneficiate to all your corrective patchwork, all download and the latest one or the latest contains all and is a combo ? (Logic, but the history describes just New actions of New

3•when you correctiv patch is definitfly installed , te official latest firmware of REV 2 8 erases It or not ?

I do not fully understand all your questions, but I can say this: the presets in the synth typically don't change between firmware revisions, so the book should still be correct. The latest available version of the book contains everything, no need to download multiple versions. There's nothing to install in the .zip file, only a .pdf file to read. You can use the information in the .pdf file to manually recreate your favourite preset patches using the front-panel buttons.
Title: Re: free book disassembling the rev2 presets
Post by: Larioso on October 10, 2019, 09:47:12 PM
Incredibly useful, thank you. 8)
Searching on certain parameters like mod matrix stuff to learn how they are used is very helpful.
Title: Re: free book disassembling the rev2 presets
Post by: alfa_26 on March 24, 2020, 01:40:02 AM
Hi all,

Let's be honest: Rev2 is a monster. And monsters can be hard to tame.

Factory presets show a lot of what can be accomplished using the synth, but understanding exactly how/why they work is a challenge. Yes, I'm aware of the "compare" button and several software interfaces but in real vintage style (I didn't get an *analog* synth for nothing, right?) I felt the need to have a book.

So I sat down and made one, reusing, amongst other things, some formidable work done by DSI forum users Razmo and Gerry Havinga. And you, dear reader, get to download and read it entirely for free! Officially the best known way to explore your synthesizer in bed! It shouldn't come as a surprise that the book turns out to be a monster too, counting way over 1000 pages (don't print this at home, folks ::) !).

Since this is a first version of the book, it may have flaws, critical omissions, etc. If you happen to find such errors or  omissions, please be so kind as to report an issue to me, as described in the first pages of the book, on https://github.com/shimpe/sc-prophet-rev2 This is also the web address where you can suggest code changes or spec sheet template changes.

This book will always remain free under a creative commons license. Future updates to the book - if any - will be announced in this thread.

Note that the software I created to make this book is available for download too, and it allows you to automagically create similar sheets for your own REV2 patches, but at the moment it's not (at all!) user friendly - i.e. probably usable for hardcore tech nerds only (and unfortunately I have deadlines for other projects which means this situation will not change any time soon). If you do try and use it however, but get stuck, be sure to reach out, and I'll make a reasonable effort to help you figure things out.

In the mean time, I hope you will find the book as intriguing as I do!
For your convienience here's the download link: https://github.com/shimpe/rev2/releases

Enjoy!
Title: Re: free book disassembling the rev2 presets
Post by: OakBloodThree on November 04, 2020, 10:50:38 AM
Is there any chance that one of our SuperCollider-literate members might be able to produce the "bare" output of the code without the PDF layout, for example in a CSV?
Title: Re: free book disassembling the rev2 presets
Post by: shiihs on November 17, 2020, 04:12:50 PM
Is there any chance that one of our SuperCollider-literate members might be able to produce the "bare" output of the code without the PDF layout, for example in a CSV?

If you could provide a detailed example of what you expect as result, I probably should be able to create what you want.