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Music notes

In music, note is the pitch and duration of sound, and also the representation of note. Notes can also represent pitch levels. Note is the cornerstone of many written music: the discretization of musical phenomena helps to play, understand and analyze.

The term "note" can be used for both general and specific meanings: someone can say "the work" Happy Birthday to you "starts with two notes of the same pitch" or "the work starts with two repetitions of the same note". In the former case, people use notes to refer to specific musical events; in the latter case, they use terms to refer to a kind of events with the same pitch. (see also: key signature name and translation.)

Two notes whose fundamental frequency is proportional to any integral power of 2 (for example, half, double or quadruple) are considered very similar. Therefore, all notes with this relationship can be classified into the same pitch category.

In traditional music theory, most countries / regions in the world use the SOL-GE naming convention do – re – mi – FA – sol – La – Si, including Italy, Portugal, Spain, France, Romania, most Latin American countries, Greece, Bulgaria, Turkey, Russia and all countries / regions that speak Arabic or Persian. However, in the English speaking and Dutch speaking world, the tonal class is usually represented by the first seven Latin letters (a, B, C, D, e, F, and G). Some European countries, including Germany, use almost the same symbol, where h replaces B (see below for details). In Indian music, Sanskrit names use SA – re – GA – Ma – PA – DHA – Ni, and in Telugu, SA – re – GA – Ma – PA – Da – Ni, Byzantine names PA – Vu – GA – di – kezoni.

An octave (octave) has the same name as the first note, but its octave. The name octave is also used to indicate the span (with double frequency) between a note and another note. In order to distinguish two notes with the same pitch level but falling into different octaves, the scientific pitch symbol system combines letter names with Arabic numerals specifying a specific octave. For example, the standard tone 440 Hz of most western music is now called a? Or A4.

There are two formal systems that define each note and octave, the Helmholtz and the scientific pitch.