view dss/experiments/exp_mfcc_740ms.m @ 0:503d0475274e

Version 0.0.1 - Initial Commit

% Script to reproduce the experiments leading to the results provided in the
% Table 2 of the paper "Deep Scattering Spectrum" by J. Andén and S. Mallat.

% Delta-Delta-MFCCs for window size 740 ms

preffix = 'mfcc_740ms_';

N = 5*2^17;

global src;

filt1_opt.wavelet_type = {'gabor','morlet'};
filt1_opt.Q = [8 2];
filt1_opt.J = T_to_J(8192*2,filt1_opt);
filt1_opt.boundary = 'symm';

sc1_opt.M = 1;

filters = filter_bank(N, filt1_opt);

features = {@(x)(feval(@(x)([x; circshift(x,[0 +1]); circshift(x,[0 -1])]), ...
	format_scat(log_scat(spec_freq_average(x,filters,sc1_opt)))))};

db = prepare_database(src,features);
db.features = single(db.features);
db = svm_calc_kernel(db,'gaussian','square',1:8:size(db.features,2));

optt.kernel_type = 'gaussian';
optt.C = 2.^[0:4:8];
optt.gamma = 2.^[-16:4:-8];
optt.search_depth = 3;
optt.full_test_kernel = 1;

classify(db, optt, preffix);