Welcome on XMLoop 1.0 | ![]() |
Introduction | |
XMLoop is a Flash MX application designed to give anyone a
simple way to create songs starting from mp3 loops. This is the first version
of XMLoop, so it contains only the basic functionalities for managing sound
clips. Future releases (maybe) will contain enhanced futures (I'm thinking
about volume controller - including fade-in and out and solo playing using
keys). With XMLoop you can define your song structure in a simple XML file - seqdef.xml (see instructions below) and interact with it enabling and disabling sound clips while song is playing. |
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Real time interaction with song | |
Clicking on "state icons" you can enable/disable
a sound clip. The change of state will be effective when entering new measure: ![]() ![]() ![]() |
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XML file structure | |
Let's see in detail the structure of the XML file used by XMLoop. Here's the file used in the demo: | |
<SONG TITLE="Movin' on XMLoop" THEEND="8" CREDITS="All samples extracted from or made with Arturia Storm 3.0 View Readme.htm for help." START_CUT="19" AUTOPLAY="N" LOOP="Y"> <SC NAME="drums" DATA="drums.mp3" VOLUME="100"> <SEQ START="1" STOP="3"/> <SEQ START="6" STOP="7"/> </SC> <SC NAME="congas" DATA="congas3.mp3" VOLUME="60"> <SEQ START="3" STOP="5"/> </SC> <SC NAME="bass" DATA="bass1.mp3" VOLUME="100"> <SEQ START="2" STOP="3"/> </SC> <SC NAME="bass 2" DATA="bass2.mp3" VOLUME="50"> <SEQ START="5" STOP="8"/> </SC> <SC NAME="organ" DATA="organ.mp3" VOLUME="30"> <SEQ START="4" STOP="7"/> </SC> <SC NAME="voice" DATA="voice.mp3" VOLUME="80"> <SEQ START="2" STOP="3"/> <SEQ START="6" STOP="8"/> </SC> </SONG> |
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In the seqdef.xml demo file, "voice" clip will play from measure 2 to measure 3, then stops and plays again from measure 6 to measure 8. |
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Notes on tags attributes | |
START_CUT: when creating a mp3 file, the encoding process
will create a "mute" interval at the beginning of the file. If
you try to loop this mp3, you'll hear an interruption between a sound clip
and its next. START_CUT value is the number of milliseconds from which the
mp3 clip will start looping, corresponding (more or less...) to the duration
of the "initial encoding pause" of sound. I suggest you to try
different values of START_CUT before choosing the right one. I find not
so bad results for values between 15 and 25. AUTOPLAY: setting to "Y" this value will cause the song to start playing automatically when mp3 files are loaded. LOOP: setting to "Y" this value will cause the song to re-start playing when reaching the end. |
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Notes on mp3 files | |
In order to have "synchronized" clips in the song, it is strictly recommended to use mp3 files having the SAME TIME DURATION (in milliseconds). The measure unit is represented by the duration of the first mp3 file loaded. Even if it's possible to use clips during n measures, this usage of XMLoop 1.0 is not supported. | |
Known problems | |
The main known problems are related to the stopping events
of the sound clips: in some cases sounds stop some milliseconds after the
right time, causing a little "bzzz".
Info: aleriz@yahoo.com |