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MEAPSoft.help.rtf
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MEAPSoft.help.rtf
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{\rtf1\mac\ansicpg10000\cocoartf824\cocoasubrtf420
{\fonttbl\f0\fswiss\fcharset77 Helvetica-Bold;\f1\fswiss\fcharset77 Helvetica;\f2\fnil\fcharset77 Monaco;
}
{\colortbl;\red255\green255\blue255;\red0\green0\blue0;\red0\green0\blue191;\red191\green0\blue0;
\red191\green0\blue0;\red0\green115\blue0;\red96\green96\blue96;\red0\green0\blue191;\red0\green115\blue0;
\red96\green96\blue96;}
\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\ql\qnatural\pardirnatural
\f0\b\fs38 \cf2 MEAPSoft
\f1\b0\fs18 \
\pard\pardeftab560\ql\qnatural
\cf2 \
\fs26 The MEAPSoft SuperCollider Object was created to give users a framework for accessing the data provided by MEAPSoft, an open-source program for segmentation, feature extraction, and recomposition, written at Columbia University in a joint collaboration between the Computer Music Center and LabROSA. For information about MEAPSoft, and to obtain the software, go to: "http://labrosa.ee.columbia.edu/meapsoft/index.php".
\fs18 \
\
\fs24 see also (for most of this you really should look at): [MEAPChunk]\
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\cf2 \
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\f0\b \cf2 \ul \ulc0 Creation:
\f1\b0 \ulnone \
\
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\f0\b \cf2 *new
\f1\b0 \
\
Creates an empty MEAPSoft Object.\
\
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\f2\fs18 \cf2 m = \cf3 MEAPSoft\cf2 .new;
\f1\fs24 \
\
\f0\b \ul Loading Data:\
\
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\cf2 \ulnone loadEDL\ul \
\
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\f1\b0 \cf2 \ulnone Opens a CocoaDialog box that allows the user to specify a MEAPSoft EDL file to be loaded. The EDL file contains a resorted version of the segmented sound file that has been resorted by the MEAPSoft Composer.\
\f2\fs18 \
m.loadEDL;
\f1\fs24 \
\
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\f0\b \cf2 loadFEAT\
\
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\f1\b0 \cf2 Opens a CocoaDialog box that allows the user to specify a MEAPSoft FEAT file to be loaded.\
\f2\fs18 \
m.loadFEAT;
\f1\fs24 \
\
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\f0\b \cf2 loadSEG\
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\f1\b0 \cf2 \
Opens a CocoaDialog box that allows the user to specify a MEAPSoft SEG file to be loaded.\
\f2\fs18 \
m.loadSEG;
\f1\fs24 \
\
\f0\b \ul Accessing:\
\f1\b0 \ulnone \
\pard\pardeftab560\ql\qnatural
\cf0 After using MEAPSoft to segment and extract features from a file, you can use the data in SuperCollider in many ways. \cf2 Each MEAPSoft Object contains a number of lists that point to MEAPChunk objects, which contain juicy data just waiting for consumption. Please see the MEAPChunk help file to understand the MEAPChunk Object.
\f2\fs18
\f1\fs24 \
\
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\f0\b \cf2 edlList\
\
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\f1\b0 \cf2 Contains a list pointing the MEAPChunks in the order in which they are found in the MEAPSoft EDL file\
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\cf2 \
\f2\fs18 m = \cf3 MEAPSoft\cf2 .new; \cf4 //create a new MEAPSoft object\cf2 \
m.loadEDL; \cf5 //load a MEAPSoft EDL file (these are the files created by the MEAPSoft composer\cf2 \
\
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\cf2 m.edlList.size; \cf5 //how many elements are in the edlList\cf2 \
\
\cf5 //check out how MEAPSoft has reorganized the segmented file\cf2 \
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\cf2 m.edlList.do\{\cf3 arg\cf2 meapChunk, i;\
(meapChunk.fileName+meapChunk.edlTimes[i].asString+meapChunk.segTime.asString).postln;\
\};\
\
\cf5 //or just look at one MEAPChunk\cf2 \
m.edlList[0].edlTimes[0].postln;\
m.edlList[0].segTime.postln;
\f1\fs24 \
\
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\f0\b \cf2 featDict
\f1\b0 \
\pard\pardeftab560\ql\qnatural
\cf2 \
Contains a Dictionary of sorted feature lists. The current features extracted by MEAPSoft are:\
\
\f2\fs18 AvgChroma - currently not sorted\
AvgChromaScalar\
AvgChunkPower \
AvgFreqSimple \
AvgMelSpec - currently not sorted\
AvgMFCC - currently not sorted\
AvgPitchSimple\
AvgSpec - currently not sorted\
AvgSpecCentroid\
AvgSpecFlatness\
ChunkLength\
ChunkStartTime\
SpectralStability
\f1\fs24 \
\
AvgMelSpec, AvgMFCC, and AvgSpec are currently not sorted because they contain multi-element arrays\
\
\f2\fs18 m = \cf3 MEAPSoft\cf2 .new; \cf4 //create a new MEAPSoft object\cf2 \
m.loadFEAT; \cf5 //load a MEAPSoft FEATure file (these hold all of the features extracted from the sound file)\cf2 \
\
\cf5 //check out how the chunks have been reorder so that they are in the order of AveChunkPower\cf2 \
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\cf2 m.featDict[\cf6 \\AvgChunkPower\cf2 ].do\{\cf3 arg\cf2 meapChunk, i; (meapChunk.segTime.asString+meapChunk.featDict[\cf6 \\AvgChunkPower\cf2 ].asString).postln;\};\
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\cf2 \
\cf5 //only list chunks that have a value < -30 in the 10th bin of the AvgSpec\cf2 \
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\cf2 m.segList.do\{\cf3 arg\cf2 meapChunk, i; \
if(meapChunk.featDict[\cf6 \\AvgSpec\cf2 ][10]<(30.neg), \{meapChunk.segTime.postln\})\
\};
\f1\fs24 \
\pard\pardeftab560\ql\qnatural
\cf2 \
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\f0\b \cf2 segList\
\
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\f1\b0 \cf2 Contains the MEAPChunk segments in their original order. A segList is created when an EDL file or FEAT file are loaded, but one can also simply load the segmented file
\f0\b \
\f1\b0 \
\
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\f2\fs18 \cf2 m = \cf3 MEAPSoft\cf2 .new; \cf4 //create a new MEAPSoft object\cf2 \
m.loadSEG; \cf5 //load a MEAPSoft SEGmentation file\cf2 \
\
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\cf2 m.segList.do\{\cf3 arg\cf2 meapChunk, i; (meapChunk.segTime.asString+meapChunk.segLength.asString).postln\}; \cf5 //list the segTime and segLength for all chunks
\f1\fs24 \cf2 \
\pard\pardeftab560\ql\qnatural
\cf2 \
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\f0\b \cf2 fileNames
\f1\b0 \
\
Contains a list of file names used by the MEAP Object\
\pard\pardeftab560\ql\qnatural
\cf2 \
\f2\fs18 m = \cf3 MEAPSoft\cf2 .new; \cf4 //create a new MEAPSoft object\cf2 \
m.loadSEG; \cf5 //load a MEAPSoft SEGmentation file\cf2 \
m.fileNames.postln; \cf5 //shows all of the files used in the MEAPSoft Object (usually it is just one)\cf2 \
\f1\fs24 \
\
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\f0\b \cf2 \ul Some Examples:
\f1\b0 \ulnone \
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\cf2 \
\f2\fs18 \cf5 //create a MEAPSoft Object and load the data from some MEAP files\cf2 \
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\cf2 m = \cf3 MEAPSoft\cf2 .new;\
m.loadEDL;\
m.loadFEAT;\
\
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\cf5 //load the files used by the MEAP object into a buffer Dictionary\cf2 \
b=\cf3 Dictionary\cf2 .new;\
m.fileNames.do\{\cf3 arg\cf2 name;\
b.add(name -> \cf3 Buffer\cf2 .read(s, name));\
\}\
\
\cf5 //load the SynthDef to play back the stuff\cf2 \
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\cf3 SynthDef\cf2 (\cf7 "playMEAP"\cf2 , \{ \cf3 arg\cf2 out=0,bufnum=0,startTime,length;\
\cf3 var\cf2 env;\
\
env = \cf3 EnvGen\cf2 .kr(\cf3 Env\cf2 ([0,1,1,0],[0.01,length-0.02,0.01]),doneAction:2);\
\cf3 Out\cf2 .ar(out,\
\cf3 PlayBuf\cf2 .ar(1, bufnum, \cf3 BufRateScale\cf2 .kr(bufnum), 1, startTime*\cf3 BufSampleRate\cf2 .kr(bufnum))*env\
)\
\}).load(s);\
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\cf2 \
\cf5 //upward motion by pitch - this is especially scary with voices\cf2 \
\
\cf3 Routine\cf2 (\{\
m.featDict[\cf6 \\AvgPitchSimple\cf2 ].do\{\cf3 arg\cf2 meapChunk; \
meapChunk.featDict[\cf6 \\AvgPitchSimple\cf2 ].postln;\
\cf3 Synth\cf2 (\cf7 "playMEAP"\cf2 ,[\cf6 \\out\cf2 , 0, \cf6 \\bufnum\cf2 , b[meapChunk.fileName], \cf6 \\startTime\cf2 , meapChunk.segTime, \cf6 \\length\cf2 , meapChunk.segLength]);\
meapChunk.segLength.wait; \
\};\
\}).play;\
\
\cf5 //do the same thing but have the grains overlapping\cf2 \
\
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\cf8 Routine\cf0 (\{\
m.featDict[\cf9 \\AvgPitchSimple\cf0 ].do\{\cf8 arg\cf0 meapChunk; \
meapChunk.featDict[\cf9 \\AvgPitchSimple\cf0 ].postln;\
\cf8 Synth\cf0 (\cf10 "playMEAP"\cf0 ,[\cf9 \\out\cf0 , 0, \cf9 \\bufnum\cf0 , b[meapChunk.fileName], \cf9 \\startTime\cf0 , meapChunk.segTime, \cf9 \\length\cf0 , meapChunk.segLength]);\
(meapChunk.segLength/(rrand(4.0,8.0))).wait; \
\};\
\}).play;\cf2 \
\
\pard\pardeftab560\ql\qnatural
\cf5 //arpeggios - well kind of\cf2 \
(\
\cf3 var\cf2 meapChunk;\
\
\cf3 Routine\cf2 (\{\
4.do\{\
(10..13).do\{\cf3 arg\cf2 i1;\
4.do\{\cf3 arg\cf2 i2;\
meapChunk=m.featDict[\cf6 \\AvgPitchSimple\cf2 ][(i1+((m.featDict[\cf6 \\AvgPitchSimple\cf2 ].size)*(i2/4))).floor.asInteger];\
meapChunk.featDict[\cf6 \\AvgPitchSimple\cf2 ].postln;\
\cf3 Synth\cf2 (\cf7 "playMEAP"\cf2 ,[\cf6 \\out\cf2 , 0, \cf6 \\bufnum\cf2 , b[meapChunk.fileName], \cf6 \\startTime\cf2 , meapChunk.segTime, \cf6 \\length\cf2 , meapChunk.segLength]);\
meapChunk.segLength.wait; \
\}\
\}\
\}\
\}).play;\
)\
\
\cf5 //play through an EDL file\cf2 \
\
\cf3 Routine\cf2 (\{\
m.edlList.do\{\cf3 arg\cf2 meapChunk; \
\cf3 Synth\cf2 (\cf7 "playMEAP"\cf2 ,[\cf6 \\out\cf2 , 0, \cf6 \\bufnum\cf2 , b[meapChunk.fileName], \cf6 \\startTime\cf2 , meapChunk.segTime, \cf6 \\length\cf2 , meapChunk.segLength]);\
meapChunk.segLength.wait; \
\};\
\}).play;\
\
\cf5 //ChunkLength gets smaller\cf2 \
\cf3 Routine\cf2 (\{\
m.featDict[\cf6 \\ChunkLength\cf2 ].reverseDo\{\cf3 arg\cf2 meapChunk; \
meapChunk.featDict[\cf6 \\ChunkLength\cf2 ].postln;\
\cf3 Synth\cf2 (\cf7 "playMEAP"\cf2 ,[\cf6 \\out\cf2 , 0, \cf6 \\bufnum\cf2 , b[meapChunk.fileName], \cf6 \\startTime\cf2 , meapChunk.segTime, \cf6 \\length\cf2 , meapChunk.segLength]);\
meapChunk.segLength.wait; \
\};\
\}).play;\
\
\cf5 //scramble a segment file and play it back\cf2 \
\
a=m.segList.scramble;\
\
\pard\pardeftab560\ql\qnatural
\cf3 Routine\cf2 (\{\
a.do\{\cf3 arg\cf2 meapChunk;\
\cf3 Synth\cf2 (\cf7 "playMEAP"\cf2 ,[\cf6 \\out\cf2 , 0, \cf6 \\bufnum\cf2 , b[meapChunk.fileName], \cf6 \\startTime\cf2 , meapChunk.segTime, \cf6 \\length\cf2 , meapChunk.segLength]);\
meapChunk.segLength.wait; \
\};\
\}).play;
\f1\fs24 \
}