what is a diatonic semitone
The diatonic semitone is an interval between adjacent steps of a scale (for example, B to C, D to E flat [a minor second]). The chromatic semitone is the interval between a foundation and its raised or lowered variant (for example, F to F sharp, an augmented prime).n interval corresponding to a frequency difference of 100 cents as measured in the system of equal temperament, and denoting the pitch difference between certain adjacent degrees of the diatonic scale (diatonic semitone) or between one note and its sharpened or flattened equivalent (chromatic semitone); minor second.