This sound like a good idea in general and could be applied to many different synths.
More useful would be having ways to output custom patches easily.
You cab do that with 3-D Writing Pens, and similar, and also there are tactile stickers. Then you also could work with the original thick paper overlays, instead of 3-D printing.
Super cool! Iām also wondering if something like textured cables could help with keeping track of a patch. Having a variety, like horizontal stripes, vertical stripes, bumps, wavy lines, etc. I donāt know if that already exists, or if it would even be feasible to manufacture. Or if itās even helpful - Iām sighted, and donāt have the experience of needing such aids.
having used raised line pen type devices i am pretty sure they could be applied and stick to the ends of cables, so you could work out systems to give feel to cables and surfaces both.
I think this is a really interesting topic, and as an aspiring synth designer, something I have thought about a fair amount.
Basically my feeling is that when you are designing a device you always have a target audience. Everyoneās bodies have a different set of things they can do, without even talking about disability. When you design a device, you have to target your device to the capabilities you expect your audience to have, and there are always tradeoffs there. So if you were designing a device to be used without ever looking at the device (like targeted for blind people) you wouldnāt put a screen on it, and you would probably have to implement all sorts of features where you can understand the state of the device by feel alone. Now if the majority of people who buy your product are going to be looking at it, you might have wasted your effort trying to optimize for a different experience than your user actually has.
Unfortunately the realities of our modern economic system means that most synth companies end up designing for the widest audience of synth nerds they can find, and when you find the venn diagram of capabilities of those users, the most overlap is with the standard sensory capabilities, so companies will default to those standards. Itās the same reason why right handed scissors are everywhere and left hand ones are hard to find, even though %10 of the population are left handed.
Basically it ends up with any accessibility measures being the low hanging fruit, like changing red/green LEDs to red/blue for color blindness, but nothing designed specifically with nonstandard humans in mind.
I am so appreciating this thread.
Iām studying design and music and learning a lot from you all thank you 
Itās wild how much even the mostly-sighted can take away from good design practice but gets so little attention. Thanks for the interest!
The just released MS-5 from Behringer ( thread ) looks just the sort of interface for anyone with visual challenges.
There are NO screens, and NO modes on the controls. Youād be able to feel and hear the positions of all the controls, with perhaps some small modification to things like control knobs with pointers and that sort of thing. Maybe some raised bumps, or even braille too at strategic places, like on the multi-position routing switches along the top.
There is a lot of controls, but thatās also an upside too, there are a lot of control options once you get the feel.
No presets, but there again that can be an upside.
Oh and itās affordable.
And Sample and Hold is great for people who cant press keys down
This is new from the MIDI Association.
It is really good to see this happening !
It looks like there will be a video and other records released of this whole session.
I expect for those unable to attend this session who seek information, they can submit queries to the MIDI Associationās Music Accessibility Standard Special Interest Group for that session.
The presentaion is at NAMM in Anaheim California on Thursday, January 23rd from 4:30 PM to 5:15 PM.
More info on MASSIG :
For how to get more involved and to contact them see this link :
There is a link at the end of this where you can submit an e-mail addess.
( Must say this isnāt the easiest of processes. )
Thatās awesome! Iād love to see Sequential/Novation involved as well.
Roland is involved with this ! ( ADDED : Meaning with MASSIG. )
I hadnāt heard of Arcana Instruments before. They are also involved with this. They have a thing called the Arcana Strum :
Will be following what happens with MASSIG at NAMM.
some real-life use-cases:
Roland is not involved. But we wish they were 
