Description of the folders :
    -txt is where the results of the executable programs should be stored
    -source contains all the algorithms and utilities
    -exec contains code that use algorithms from source in order to make a usable command line executable for
        -scattering
        -spectrogram
        -imshow
    -wav is a folder where the signals are stored, in this version some samples are already present for testing


The Makefile is used by $make 
without any arguments, it will create all the executables (3) which can then be used as follow

SPECTROGRAM:
//default arguments
./spectrogram wav/slow.wav //this will generate the file ./txt/spectrogram.txt which can be displayed as follow
//specify the window size
./spectrogram wav/slow.wav 256
//specify the window size plus the overlapping
./spectrogram wav/slow.wav 256 0.2


IMSHOW:

//keep ratio
./imshow txt/spectorgram.txt //this utility acts like imagesc in matlab and can be used on any .txt storing a plain matrix

//square display
./imshow 0 txt/spectrogram.txt

SCATTERING:
//arguments are in order : T1, Q1, J1, T2, Q2, J2,...,wav file
//the number of layers is determined by the number of args given such as :
//doing the following command will save in txt files the layers into the txt directory
./scattering 8 20 4 8 1 1 32 1 1 wav/processed.wav

DISPLAYING THE SCATTERING
//In order to display the wav plus all the scattering layers, a simple python file is used for conveniency 
//and is used by simply calling it and passing the wav on which the scattering has been done

python exec/Plots.py wav/processed.wav