Introduce the problem

The example code reproduces the problem found in the original Aquila
repository's list of issues: zsiciarz#55

Build the workshop target and run it with a path to the tone.wav file
passed as an argument

examples/CMakeLists.txt

@@ -39,3 +39,5 @@ add_subdirectory(fft_filter)
 add_subdirectory(spectrogram)
 add_subdirectory(mfcc_calculation)
 add_subdirectory(dtw_path_recovery)
+
+add_subdirectory(workshop)

examples/workshop/CMakeLists.txt

@@ -0,0 +1,8 @@
+################################################################################
+#
+# AM modulation example.
+#
+################################################################################
+
+aquila_example(workshop)
+aquila_example(generate_test_wavfile)

examples/workshop/generate_test_wavfile.cpp

@@ -0,0 +1,19 @@
+#include "aquila/source/WaveFile.h"
+#include "aquila/source/generator/SineGenerator.h"
+
+#include <iostream>
+
+int main(int argc, char *argv[])
+{
+    if (argc < 2)
+    {
+        std::cout << "Usage: generate_test_wavfile <FILENAME>" << std::endl;
+        return 1;
+    }
+
+    const auto sampleRate = 44100;
+    Aquila::SineGenerator sineGenerator(sampleRate);
+    sineGenerator.setFrequency(220).setAmplitude(255).generate(sampleRate*12-5);
+
+    Aquila::WaveFile::save(sineGenerator, argv[1]);
+}

examples/workshop/workshop.cpp

@@ -0,0 +1,27 @@
+#include "aquila/source/WaveFile.h"
+#include "aquila/transform/Mfcc.h"
+
+#include <iostream>
+
+int main(int argc, char *argv[])
+{
+    if (argc < 2)
+    {
+        std::cout << "Usage: read_wavs <FILENAME>" << std::endl;
+        return 1;
+    }
+
+    Aquila::WaveFile wav(argv[1]);
+
+    const auto numSamples = wav.getSamplesCount();
+
+    Aquila::Mfcc mfcc(numSamples);
+    const auto mfccValues = mfcc.calculate(wav);
+
+    for (const auto val : mfccValues)
+    {
+        std::cout << val << " ";
+    }
+
+    std::cout << std::endl;
+}