Harry Potter and the Mnemonic Major System
darkshadow.io
darkshadow.io
In my idiolect, they both belong together with the alveolar plosive pair (/t/,/d/) in category 1. The place of articulation feels almost identical between my laminal plosives and dental fricatives.
Though I do agree with grouping the velar nasal along with the alveolar nasal rather than with the other velar plosives. The acoustic similarity between /n/ and /N/ feels a lot more salient than any similarity in velar articulation.
Overall, a really cool system! Now I'm curious about what kind of density you could reasonably encode if you remove the need to memorize and used it as a form of steganography.
I like your idea of using the major system as a form of steganography. It would require a deterministic encoding algorithm though. I might explore this idea in another post in the future.
https://en.wikipedia.org/wiki/Mnemonic_major_system
The linked article is an introduction to the system and the author has included some Python tools to help you learn and use it.
"Gruneberg (1998) argues that the keyword method, in general, is inferior to rote learning in the longer-term retention of vocabulary."
https://universeofmemory.com/effectiveness-and-usefulness-of...
0 = the word zero has an s/z sound
1 = a single line, like lower-case "L"
2 = two lines, like lower-case "N"
3 = three lines, like lower-case "M"
4 = the word "four" ends in an "R" sound
5 = the word "five" contains "F" and "V"
6 = the digit looks like a lower-case "B", and lower-case "D" is its mirror image
7 = the digit looks like a badly-written upper-case "T"
8 = the "gh" in the word is weird, and reminiscent of "CH"/"SH" (and "J" is similar)
9 = the digit looks like a lower-case "G", which is similar to lower-case "Q", and lower-case "P" is its mirror image
I had no idea that there was a standard, but I use it a lot to remember what page I've reached in a book (without a bookmark handy), or for short strings of numbers like IP addresses. I find it much easier to remember "Latin insults suns lamely" than "172.217.20.131", though I'd probably try and find a better mnemonic than "insults" for 217, as that technically maps to 20170...It's kind of like the "correct horse battery staple" thing (https://xkcd.com/936/); words are easier to memorise, especially if you can create a narrative, however tiny.
I also find it takes a "computational" toll on my thinking ability. As far as I'm concerned, my mind pretty much has only volatile storage, and anything that should be kept for later needs to be written back to something more durable.
My personal technic for memorizing numbers like pin or phone numbers is to memorize the general shape of the difference between each digit. It’s obvious to compute, use visual memory and doesn’t not requires an external system.