RTTTL and Nokring are two popular formats of cellular phone
ringtone. A RTTTL/Nokring format ringtone MUST contain three
specific elements in order to be recognized by ringtone programs.
The three elements are name, settings, and notes.
For example, here is the RTTTL ringtone for Haunted House :
HauntedHouse: d=4,o=5,b=108: 2a4, 2e, 2d#, 2b4,
2a4, 2c, 2d, 2a#4, 2e., e, 1f4, 1a4, 1d#, 2e., d, 2c., b4, 1a4,
1p, 2a4, 2e, 2d#, 2b4, 2a4, 2c, 2d, 2a#4, 2e., e, 1f4, 1a4,
1d#, 2e., d, 2c., b4, 1a4 The three parts are separated
by a semicolon.
- part 1: name of the ringtone (here: "HauntedHouse"),
a string of characters represents the name of the ringtone
- part 2: settings (here: d=4,o=5,b=10), where "d="
is the default duration of a note. In this case, the "4"
means that each note with no duration specifier (see below)
is by default considered a quarter note. "8" would
mean an eight note, and so on. Accordingly, "o="
is the default octave. There are four octaves in the Nokring/RTTTL
format. And "b=" is the tempo, in "beats per
minute".
- part 3: the notes. Each note is separated by a comma and
includes, in sequence: a duration specifier, a standard music
note, either a, b, c, d, e, f or g, and an octave specifier.
If no duration or octave specifier are present, the default
applies.
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