freeware http://artificial-tango.nullmedium.de/			The artificial tango library is a collection of externals for Max/MSP dealing with recognition, analysis and generation of musical structures and events. Most objects take MIDI data as input. In order to use the objects from the artificial tango library FTM 2.0 has to be installed on your system.
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at.chord	External		chord detection
at.dtw	External		calculate (constrained) dynamic time-warping distance between two time series
at.hashtab	External		hashtable object
at.rhythm	External		rhythm detection
at.roughness	External		predicts the perceived roughness of a tonal sonority
at.tonic	External		parallel-processing key finding
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