Chromatic Semitone

In the Musical theory, the chromatic semitone indicates a category of Demi-ton pertaining to the diatonic scale amplified - i.e., the chromatic scale -, and located between two notes of the same name (example: “ do-do $\ sharp$ ”).

It is called thus because, just like the Demi-ton diatonic, it is practically equal to half of the your.

It is defined as the distance enters a degree diatonic naturalness and the same degree moved towards the serious or the acute by means of a deterioration. It is also the interval which, added to the Demi-ton diatonic, transforms the latter into your, that is to say, like the interval which, cut off with the your, transforms the latter into semitone diatonic.

One can write: “Your = semitone diatonic + chromatic semitone” or “Your = chromatic semitone + semitone diatonic”.

the chromatic scale contains five chromatic semitones and seven semitones diatonic.

the chromatic semitone is the interval ranging between two close notes, of identical names but of height S different. One of the two notes delimiting the chromatic semitone - the intermediate note - is a sound of which the initial height was modified by means of a deterioration. The chromatic semitone is thus obtained artificially, contrary to the semitone diatonic, which him, exists in a native state in the not amplified diatonic scale.

the tone, the semitone diatonic and the chromatic semitone, are the basic intervals, the joint intervals, which by addition, makes it possible to obtain all the other intervals: third, quad, fifth, etc the chromatic semitone corresponds very precisely to the interval of unison increased, although this name is used little.

In this fragment of chromatic scale, the accodances indicate tons them. The semitones diatonic are left blank. The intermediate notes appearing between brackets, are faded notes.

Note:: the chromatic semitone can be either smaller or larger than the semitone diatonic. Cf - -

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