Technique	PercussiveInstrumentTimbreType
Document	ISO/IEC WD 15938-4
Name		Geoffroy Peeters, Patrice Tisserand - Ircam, Paris, France
EMail		peeters@ircam.fr, tisseran@ircam.fr
Type		high-level audio descriptor extraction tool
External Libraries 	--
Related Ds/DSs	--
Used Ds/DSs	--
Input		Wav file
Extraction	Yes
Client Appl	NA
Summary		This component extract all PercussiveInstrumentTimbre low-level descriptors: 
		LogAttackTimeType
		SpectralCentroidType
		TemporalCentroidType
		The low-level descriptors are available as 
		-output of the function 
		-or/and written in an .xml file

Strong Points 	This document corresponds to timbreExtractionMatlab_v2.11cor.zip. (2002/08/01)
		The following functions are used 

		PercussiveInstrumentTimbreDS.m, 
		-> h_energy.m, 
		-> LogAttackTimeD.m, 
		-> TempoalCentroid.m, 
		-> SpectralCentroid.m
		-> h_PITtoXML.m

 	
Changes from version 2.1.: 
		-added xml output, 
		-renaming of the files according to w5046, 

		
Limitations	Only process '.wav' files.
		The whole audio file is processed

Known Problems 	--	

Parameters	audioFile : string : name of the audio file to process 
		
		
Output	Descriptors values for the audio file:
		LogAttackTimeType
		SpectralCentroidType
		TemporalCentroidType


Usage		1. run matlab
		2. change the working directory to the directory containing the function
		3. call the function 'PercussiveInstrumentTimbreDS' with the required parameters

Function call example 

>> [LogAttackTime, SpectralCentroid, TemporalCentroid] = PercussiveInstrumentTimbreDS('test.wav', 1)