Topic summary
Integer notation

Extracted from the Wikipedia article Pitch class.
Integer notation
Integer notation is the translation of pitch classes or interval classes into whole numbers. Thus if C = 0, then C♯ = 1 ... A♯ = 10, B = 11, with "10" and "11" substituted by "t" and "e" in some sources, A and B in others (like the duodecimal numeral system, which also uses "t" and "e", or A and B, for "10" and "11"). This allows the most economical presentation of information regarding post-tonal materials.