Also in 1968, the french singer — and hobbyist mathematician — Boby Lapointe ¹ proposed a graphical representation and pronunciation system for hexadecimal numbers, named bibi-binary ². The pronunciation part is based on the combinations of 4 consonants (HBKD) with 4 vowels (OAEI). It's probably less practical than a system relying on similarities with words for native numbers, but it was probably more of an artsy experiment and it produces shorter (and maybe funnier) results.