public void LoadVoiceSample(string speakerName, byte[] sample)
{
if (string.IsNullOrEmpty(speakerName))
{
throw new ArgumentException(nameof(speakerName));
}
if (sample == null || sample.Length == 0)
{
throw new ArgumentException(nameof(sample));
}
var speakerToUpdate = Speakers.FirstOrDefault(x => x.Name == speakerName);
var voiceSample = new VoiceSample(sample, _sampleRate);
if (speakerToUpdate != null)
{
for (int i = 0; i < speakerToUpdate.Samples[0].MelFrequency.Length; i++)
{
speakerToUpdate.Samples[0].MelFrequency[i] = (speakerToUpdate.Samples[0].MelFrequency[i] + voiceSample.MelFrequency[i]) / 2;
}
}
else
{
var speaker = new Speaker(speakerName);
speaker.Id = Guid.NewGuid().ToString();
speaker.Samples.Add(voiceSample);
Speakers.Add(speaker);
}
}
public void Construct_With_Mel_Frequency_Array_Length_Is_Lower_Than_Expected_Throws_Exception()
{
//arrange
var melFrequency = new double[0];
//act
Action action = () => { var sut = new VoiceSample(melFrequency); };
//assert
action.Should()
.Throw <ArgumentException>();
}
public void Construct_With_Mel_Frequency_Parameters_Sucessfully()
{
//arrange
var melFrequency = new double[20];
//act
Action action = () => { var sut = new VoiceSample(melFrequency); };
//assert
action.Should()
.NotThrow <ArgumentException>();
}
public void Construct_With_Correct_Parameters_Sucessfully()
{
//arrange
byte[] sampleData = File.ReadAllBytes("test.wav");
var sampleRate = 44100;
//act
Action action = () => { var sut = new VoiceSample(sampleData, sampleRate); };
//assert
action.Should()
.NotThrow <Exception>();
}
public void Construct_Sample_Rate_Is_Negative_Throws_Exception()
{
//arrange
byte[] sampleData = new byte[1];
var sampleRate = -1;
//act
Action action = () => { var sut = new VoiceSample(sampleData, sampleRate); };
//assert
action.Should()
.Throw <ArgumentException>();
}
public void Construct_Sample_Data_Is_Null_Throws_Exception()
{
//arrange
byte[] sampleData = null;
var sampleRate = 1;
//act
Action action = () => { var sut = new VoiceSample(sampleData, sampleRate); };
//assert
action.Should()
.Throw <ArgumentNullException>();
}
public string IdentifySpeaker(byte[] sampleToIdentify)
{
var sample = new VoiceSample(sampleToIdentify, _sampleRate);
var speakersDistances = Speakers.Select(x =>
{
double distance = 0;
for (int i = 0; i < x.Samples[0].MelFrequency.Length; i++)
{
distance += Math.Abs(x.Samples[0].MelFrequency[i] - sample.MelFrequency[i]);
}
return(new { Speaker = x.Name, Distance = distance });
});
return(speakersDistances.OrderBy(x => x.Distance).First().Speaker);
}
public void Construct_Calculates_Expected_Mel_Frequency_Coeficients_Sucessfully()
{
byte[] sampleData = File.ReadAllBytes("test.wav");
var sampleRate = 44100;
//act
var sut = new VoiceSample(sampleData, sampleRate);
//assert
sut.MelFrequency
.Should()
.NotBeNull();
sut.MelFrequency
.Should()
.NotBeEmpty();
sut.MelFrequency
.Should()
.BeEquivalentTo(_expectedMel);
}
public void InitializeCore(List <SpeakerModel> speakersData)
{
if (speakersData == null || speakersData.Count == 0)
{
throw new ArgumentException(nameof(speakersData));
}
foreach (var speakerData in speakersData)
{
var speaker = new Speaker(speakerData.Name)
{
Id = speakerData.Id
};
foreach (var dataSample in speakerData.Features)
{
var sample = new VoiceSample(dataSample.Features.Split(';').Select(x => double.Parse(x.Replace('.', ','))).ToArray());
sample.Id = dataSample.Id;
speaker.Samples.Add(sample);
}
Speakers.Add(speaker);
}
}
