The question more or less accidentally stumbles onto something known as synesthesia. Years ago, I read of mathematical savants who innately transpose complex math problems into colors, which, in terms of matching up problems with solutions, are much easier to work with than similarly complex equations. It was thought that this happens because particular areas of the brain have physically closer crossroads and connections. In my opinion, that also all of this stuff comes together on some warped level, everything must come together on some basic level.
"Chromesthesia or sound-to-color synesthesia is a type of synesthesia in which sound involuntarily evokes an experience of color, shape, and movement. Individuals with sound-color synesthesia are consciously aware of their synesthetic color associations/perceptions in daily life."
'Unraveling the Genetics Behind Why Some People “See” Sound and “Hear” Color'
"Why Can Some People 'Hear' Colors?"
A video about how also (visible) light is, in a sense, a sound.
***** Late edit: I guess that people can hear, etc, words, too. That question here about what can be made of only the twenty-six letters, I think, is fertile ground for looking at also these other senses, but on a basic level. But, ultimately, the persons with the "hammers" are the ones who rule society. Brut force over finesse and resilience.
********** Edit in response to the comment: "The Greek philosopher and mathematician Pythagoras, who himself displayed signs of the remarkable trait, produced the first known description of synesthesia around 500 B.C. But experts believe the genetic basis for synesthesia, which tends to run in families, has been present throughout human history."
"Although synesthesia was long thought to be a rare condition, new research reveals that it's not that uncommon. Around 4 percent of the population is naturally synesthetic all of the time, and many people experience synesthesia temporally when they use psychedelic drugs."
"No, synesthesia is not a disease. In fact, several researchers have shown that synesthetes can perform better on certain tests of memory and intelligence. Synesthetes as a group are not mentally ill. They test negative on scales that check for schizophrenia, psychosis, delusions, and other disorders."
"Lexical-Gustatory Synesthesia is the rarest form of synesthesia. An individual with this type of synesthesia can taste certain words or sounds."
Furthermore, I imagine that persons with very sensitive hearing can hear regular clothing in motion. For sure, we can all hear someone walking in thick snow pants. As well, it may be that such sounds actually are so common that we have learned to just tune it out. How about the sound of zippers, snap buttons, and, putting cloths on and off? And, shoes hitting the pavement?