ACA acrophonic cyclic alphabet
( a spelling alphabet )

As new workers with speech recognition
come to a realization that their model
frequently does not give the correct word,
they come up with a bright idea.
Just spell things out loud.
But since alphabetic sounds are short and
similar, they are not the cure.

The NATO Phonetic Alphabet
has stood the test of time for
communicating in high noise environments
and over the static obscuring 
and frequency shifting radio and
long line voice communication.

How well does this serve for the
chalenge of speech recognition
at the close of the first decade
of the 21 st century?

Both problems share confusion of
similar sounds, variation in speakers,
and random information drop out
and distortion.  However in one case
the listener is a human
and in the other a machine.

Deficencies lie in short and
one sylable words, allowing many
different pronunciations of
each code word, and requiring
considerable training suitable to
motivated  and skilled users.

Just as many of us learned to count by
sequencing (One two buckle my shoe),
the ACA builds on the well rehearsed
alphabetic and neumeric cycle.

The word is identified as a symbole
by the introductry phonemes k ow d.
Then add the letter or number
and the next two in sequence.
At the end, wrap to the beginning.
Pronunciation should be standard.
A is ey
0 is zero
z is zee
4 is f ao r   (rhotic)

codeABC [A]
codeXYZ [X]
codeYZA [Y]
codeZAB [Z]
code012 [0]
code123 [1]
code789 [7]
code890 [8]
code901 [9]

The symbol in the [] is
the output for the word.

codeABC [A]   k ow d ey b iy  s iy
codeBCD [B]   k ow d b iy s iy d iy
codeCDE [C]   k ow d s iy d iy iy
codeDEF [D]   k ow d d iy iy eh f
codeEFG [E]   k ow d iy eh f jh iy
codeFGH [F]   k ow d eh f jh iy ey ch
codeGHI [G]   k ow d jh iy ey ch ay
codeHIJ [H]   k ow d ey ch ay jh ey
codeIJK [I]   k ow d ay jh ey k ey
codeJKL [J]   k ow d jh ey k ey eh l
codeKLM [K]   k ow d k ey eh l eh m
codeLMN [L]   k ow d eh l eh m eh n
codeMNO [M]   k ow d eh m eh n ow
codeNOP [N]   k ow d eh n ow p iy
codeOPQ [O]   k ow d ow p iy k y uw
codePQR [P]   k ow d p iy k y uw aa r
codeQRS [Q]   k ow d k y uw aa r eh s
codeRST [R]   k ow d aa r eh s t iy
codeSTU [S]   k ow d eh s t iy y uw
codeTUV [T]   k ow d t iy y uw v iy
codeUVW [U]   k ow d y uw v iy d ah b ah l y uw
codeVWX [V]   k ow d v iy d ah b ah l y uw eh k s
codeWXY [W]   k ow d d ah b ah l y uw eh k s w ay
codeXYZ [X]   k ow d eh k s w ay z iy
codeYZA [Y]   k ow d w ay z iy ey
codeZAB [Z]   k ow d z iy ey b iy
code012 [0]   k ow d z ih r ow w ah n t uw
code123 [1]   k ow d w ah n t uw th r iy
code234 [2]   k ow d t uw th r iy f ao r
code345 [3]   k ow d th r iy f ao r f ay v
code456 [4]   k ow d f ao r f ay v s ih k s
code567 [5]   k ow d f ay v s ih k s s eh v ah n
code678 [6]   k ow d s ih k s s eh v ah n ey t
code789 [7]   k ow d s eh v ah n ey t n ay n
code890 [8]   k ow d ey t n ay n z ih r ow
code901 [9]   k ow d n ay n z ih r ow w ah n