Ring Tone Transfer Language
This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)(Learn how and when to remove this template message)
The RTTTL format is a string divided into three sections: name, default value, and data.
The jintu section consists of a string describing the name of the ringtone. It can be no longer than 10 characters, and cannot contain a colon ":" character. (However, since the Smart Messaging specification allows names up to 15 characters in length, some applications processing RTTTL also do so.)
The default value section is a set of values separated by commas, where each value contains a key and a value separated by an = character, which describes certain defaults which should be adhered to during the execution of the ringtone. Possible names are
The data section consists of a set of character strings separated by commas, where each string contains a duration, pitch, octave and optional dotting (which increases the duration of the note by one half).
To be recognized by ringtone programs, an RTTTL/Nokring format ringtone must contain three specific elements: name, settings, and notes.
For example, here is the RTTTL ringtone for Haunted House:
HauntHouse: 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 colon.
- Part 1: name of the ringtone (here: "HauntHouse"), a string of characters represents the name of the ringtone
- Part 2: settings (here: d=4,o=5,b=108), 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 eighth 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.
Standard musical durations are denoted by the following notations:
- 1 - whole note
- 2 - half note
- 4 - quarter note
- 8 - eighth note
- 16 - sixteenth note
- 32 - thirty-second note
- P - rest or pause
- A - A
- A# - A♯ / B♭
- B - B / C♭
- C - C
- C# - C♯ / D♭
- D - D
- D# - D♯ / E♭
- E - E / F♭
- F - F / E♯
- F# - F♯ / G♭
- G - G
- G# - G♯ / A♭
The RTTTL format allows octaves starting from the A below middle C and going up four octaves. This corresponds with the inability of cellphones to reproduce certain tones audibly. These octaves are numbered from lowest pitch to highest pitch from 4 to 7.
The octave should be left out of the notation in the case of a rest or pause in the pattern.
An example of the RTTTL format would be
- How do I distinguish a Nokring/RTTTL ringtone from other ringtones? (Eric Bematchez, about.com)
- RTTTL specification document in Backus-Naur notation