private IAudioSamplesAnalyzer CreateAudioSamplesAnalyzer()
{
CamdAudioSamplesAnalyzer camdAudioSamplesAnalyzer = new CamdAudioSamplesAnalyzer(SampleRateHz, MaxSampleCountToUse);
camdAudioSamplesAnalyzer.HalftoneContinuationBias = halftoneContinuationBias;
return(camdAudioSamplesAnalyzer);
}
public static IAudioSamplesAnalyzer CreateAudioSamplesAnalyzer(EPitchDetectionAlgorithm pitchDetectionAlgorithm, int sampleRateHz)
{
switch (pitchDetectionAlgorithm)
{
case EPitchDetectionAlgorithm.Camd:
CamdAudioSamplesAnalyzer camdAudioSamplesAnalyzer = new CamdAudioSamplesAnalyzer(sampleRateHz, MaxSampleCountToUse);
return(camdAudioSamplesAnalyzer);
case EPitchDetectionAlgorithm.Dywa:
DywaAudioSamplesAnalyzer dywaAudioSamplesAnalyzer = new DywaAudioSamplesAnalyzer(sampleRateHz, MaxSampleCountToUse);
return(dywaAudioSamplesAnalyzer);
default:
throw new UnityException("Unkown pitch detection algorithm:" + pitchDetectionAlgorithm);
}
}
public void TestPitchDetection()
{
MicProfile micProfile = CreateDummyMicProfile();
string assetsPath = Application.dataPath;
string sineWaveToneDir = assetsPath + "/Editor/Tests/SineWaveTones/";
Dictionary <string, string> pathToExpectedMidiNoteNameMap = new Dictionary <string, string>();
pathToExpectedMidiNoteNameMap.Add(sineWaveToneDir + "sine-wave-a3-220hz.ogg", "A3");
pathToExpectedMidiNoteNameMap.Add(sineWaveToneDir + "sine-wave-a4-440hz.ogg", "A4");
pathToExpectedMidiNoteNameMap.Add(sineWaveToneDir + "sine-wave-a5-880hz.ogg", "A5");
pathToExpectedMidiNoteNameMap.Add(sineWaveToneDir + "sine-wave-c2-61,74hz.ogg", "C2");
pathToExpectedMidiNoteNameMap.Add(sineWaveToneDir + "sine-wave-c4-261,64hz.ogg", "C4");
pathToExpectedMidiNoteNameMap.Add(sineWaveToneDir + "sine-wave-c6-1046,50hz.ogg", "C6");
foreach (KeyValuePair <string, string> pathAndNoteName in pathToExpectedMidiNoteNameMap)
{
// Load the audio clip
string path = pathAndNoteName.Key;
AudioClip audioClip = AudioUtils.GetAudioClip(path);
float[] samples = new float[audioClip.samples];
audioClip.GetData(samples, 0);
// Analyze the samples
IAudioSamplesAnalyzer audioSamplesAnalyzer = new CamdAudioSamplesAnalyzer(audioClip.frequency);
audioSamplesAnalyzer.Enable();
PitchEvent pitchEvent = audioSamplesAnalyzer.ProcessAudioSamples(samples, samples.Length, micProfile);
// Check result
Assert.NotNull(pitchEvent, $"No pitch detected when analyzing {path}");
string expectedName = pathAndNoteName.Value;
string analyzedName = MidiUtils.GetAbsoluteName(pitchEvent.MidiNote);
Assert.AreEqual(expectedName, analyzedName,
$"Expected {expectedName} but was {analyzedName} when analyzing {path}");
}
}
