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makeTestData.m
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makeTestData.m
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function testData(source_path, output_path)
% testData(source_path, audio_file, output_path)
% source_path = path to DPWE code
% output_ptah = directory to store generated files
%
% CREATED:2013-03-08 14:32:21 by Brian McFee <brm2132@columbia.edu>
% Generate the test suite data for librosa routines:
%
% hz_to_mel
% mel_to_hz
% hz_to_octs
%
% stft
% istft
%
% load
% resample
%
% melfb
% dctfb
%
% localmax
%
% Make sure we have the path to DPWE code
addpath(source_path);
display('hz_to_mel');
testHz2Mel(output_path);
display('mel_to_hz');
testMel2Hz(output_path);
display('hz_to_octs');
testHzToOcts(output_path);
display('load');
testLoad(output_path);
display('stft');
testSTFT(output_path);
display('istft');
testISTFT(output_path);
display('melfb');
testMelfb(output_path);
display('chromafb');
testChromafb(output_path);
display('resample');
testResample(output_path);
display('beat');
testBeat(output_path);
%% Done!
display('Done.');
end
function testHz2Mel(output_path)
% Test with either a scalar argument or a vector
P_HZ = {[440], [2.^(1:13)]};
% Slaney-style or HTK
P_HTK = {0, 1};
counter = 0;
for i = 1:length(P_HZ)
f = P_HZ{i};
for j = 1:length(P_HTK)
htk = P_HTK{j};
% Run the function
result = hz2mel(f, htk);
% save the output
counter = counter + 1;
filename = sprintf('%s/feature-hz_to_mel-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'f', 'htk', 'result');
end
end
end
function testMel2Hz(output_path)
% Test with either a scalar argument or a vector
P_MELS = {[5], [2.^(-2:9)]};
% Slaney-style or HTK
P_HTK = {0, 1};
counter = 0;
for i = 1:length(P_MELS)
f = P_MELS{i};
for j = 1:length(P_HTK)
htk = P_HTK{j};
% Run the function
result = mel2hz(f, htk);
% save the output
counter = counter + 1;
filename = sprintf('%s/feature-mel_to_hz-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'f', 'htk', 'result');
end
end
end
function testHzToOcts(output_path)
% Scalar argument or a vector
P_HZ = {[5], [2.^(2:14)]};
counter = 0;
for i = 1:length(P_HZ)
f = P_HZ{i};
% Run the function
result = hz2octs(f);
% save the output
counter = counter + 1;
filename = sprintf('%s/feature-hz_to_octs-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'f', 'result');
end
end
function testLoad(output_path)
% Test: load a wav file
% get audio stream (floats) and sample rate
% preserve stereo or convert to mono
wavfile = 'data/test1_44100.wav';
[y, sr] = wavread(wavfile);
y = y'; % Transpose to make python code easier
mono = 0;
% Stereo output
counter = 1;
filename = sprintf('%s/core-load-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'wavfile', 'mono', 'y', 'sr');
% Mono output
counter = 2;
mono = 1;
y = mean(y, 1);
filename = sprintf('%s/core-load-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'wavfile', 'mono', 'y', 'sr');
end
function testMelfb(output_path)
% Test three sample rates
P_SR = [8000, 11025, 22050];
% Two FFT lengths
P_NFFT = [256, 512];
% Three filter bank sizes
P_NFILTS = [20, 40, 120];
% One width
P_WIDTH = [1.0];
% F_min
P_FMIN = [0, 512];
% F_max
P_FMAX = [2000, inf];
% Slaney or HTK mels
P_HTK = [0, 1];
% Generate tests
counter = 0;
for sr = P_SR
for nfft = P_NFFT
for nfilts = P_NFILTS
for width = P_WIDTH
for fmin = P_FMIN
for fmax = P_FMAX
if isinf(fmax)
fmax = sr / 2;
end
for htk = P_HTK
% Run the function
[wts, frqs] = fft2melmx(nfft, sr, nfilts, width, fmin, fmax, htk, 0);
% save the output
counter = counter + 1;
filename = sprintf('%s/feature-melfb-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, ...
'sr', 'nfft', 'nfilts', 'width', ...
'fmin', 'fmax', 'htk', 'wts', 'frqs');
end
end
end
end
end
end
end
end
function testResample(output_path)
wavfile = 'data/test1_22050.wav';
[y_in, sr_in] = wavread(wavfile);
y_in = mean(y_in, 2); % Convert to mono
% Test a downsample, same SR, and upsample
P_SR = [8000, 22050, 44100];
counter = 0;
for sr_out = P_SR
y_out = resample(y_in, sr_out, sr_in);
counter = counter + 1;
filename = sprintf('%s/core-resample-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'wavfile', 'y_in', 'sr_in', 'y_out', 'sr_out');
end
end
function testSTFT(output_path)
wavfile = 'data/test1_22050.wav';
[y, sr] = wavread(wavfile);
y = mean(y, 2); % Convert to mono
% Test a couple of different FFT window sizes
P_NFFT = [128, 256, 1024];
% And hop sizes
P_HOP = [64, 128, 256];
% Note: librosa.stft does not support user-supplied windows,
% so we do not generate tests for this case.
counter = 0;
for nfft = P_NFFT
for hop_length = P_HOP
% Test once with no hann window (rectangular)
hann_w = 0;
D = stft(y, nfft, hann_w, hop_length, sr);
counter = counter + 1;
filename = sprintf('%s/core-stft-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'wavfile', 'D', 'sr', 'nfft', 'hann_w', 'hop_length');
% And again with default hann window (nfft)
hann_w = nfft;
D = stft(y, nfft, hann_w, hop_length, sr);
counter = counter + 1;
filename = sprintf('%s/core-stft-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'wavfile', 'D', 'sr', 'nfft', 'hann_w', 'hop_length');
end
end
end
function testISTFT(output_path)
wavfile = 'data/test1_22050.wav';
[y_in, sr] = wavread(wavfile);
y_in = mean(y_in, 2); % Convert to mono
% Test a couple of different FFT window sizes
P_NFFT = [128, 256, 1024];
% And hop sizes
P_HOP = [64, 128, 256];
% Note: librosa.stft does not support user-supplied windows,
% so we do not generate tests for this case.
counter = 0;
for nfft = P_NFFT
for hop_length = P_HOP
% Test once with no hann window (rectangular)
hann_w = 0;
D = stft(y_in, nfft, hann_w, hop_length, sr);
Dinv = istft(D, nfft, hann_w, hop_length);
counter = counter + 1;
filename = sprintf('%s/core-istft-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'D', 'Dinv', 'nfft', 'hann_w', 'hop_length');
% And again with default hann window (nfft)
hann_w = nfft;
D = stft(y_in, nfft, hann_w, hop_length, sr);
Dinv = istft(D, nfft, hann_w, hop_length);
counter = counter + 1;
filename = sprintf('%s/core-istft-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, 'D', 'Dinv', 'nfft', 'hann_w', 'hop_length');
end
end
end
function testBeat(output_path)
wavfile = 'data/test2_8000.wav';
[y, sr] = wavread(wavfile);
y = mean(y, 2); % Convert to mono
% Generate the onset envelope first
[t, xcr, D, onsetenv, oesr] = tempo2(y, sr);
filename = sprintf('%s/beat-onset-000.mat', output_path);
display([' `-- saving ', filename]);
save(filename, 'wavfile', 'onsetenv', 'D');
filename = sprintf('%s/beat-tempo-000.mat', output_path);
display([' `-- saving ', filename]);
save(filename, 'wavfile', 't', 'onsetenv');
[beats, onsetenv_out, D, cumscore] = beat2(onsetenv, oesr);
filename = sprintf('%s/beat-beat-000.mat', output_path);
display([' `-- saving ', filename]);
save(filename, 'wavfile', 'beats', 'onsetenv');
end
function testChromafb(output_path)
% Test three sample rates
P_SR = [8000, 11025, 22050];
% Two FFT lengths
P_NFFT = [256, 512];
% Two filter bank sizes
P_NCHROMA = [12, 24];
% Two A440s
P_A440 = [435.0, 440.0];
% Two center octaves
P_CTROCT = [4.0, 5.0];
% Two octave widths
P_OCTWIDTH = [0, 2.0];
% Generate tests
counter = 0;
for sr = P_SR
for nfft = P_NFFT
for nchroma = P_NCHROMA
for a440 = P_A440
for ctroct = P_CTROCT
for octwidth = P_OCTWIDTH
% Run the function
wts = fft2chromamx(nfft, nchroma, sr, a440, ctroct, octwidth);
% save the output
counter = counter + 1;
filename = sprintf('%s/feature-chromafb-%03d.mat', output_path, counter);
display([' `-- saving ', filename]);
save(filename, ...
'sr', 'nfft', 'nchroma', 'a440', ...
'ctroct', 'octwidth', 'wts');
end
end
end
end
end
end
end