/**
* Creates a voice print and stores it along with the user key for later comparison with new samples
* <p>
* Threading : this method is synchronized to prevent inadvertently erasing an existing user key
* </p>
* @param userKey the user key associated with this voice print
* @param voiceSample the voice sample, values between -1.0 and 1.0
* @return the voice print extracted from the given sample
*/
public VoicePrint CreateVoicePrint(T userKey, double[] voiceSample)
{
lock (_lock)
{
if (userKey == null)
{
throw new ArgumentNullException(nameof(userKey), "The userKey is null");
}
if (store.ContainsKey(userKey))
{
throw new ArgumentException("The userKey already exists: [{userKey}");
}
double[] features = audioProcessor.ProcessAndExtract(voiceSample);
VoicePrint voicePrint = new VoicePrint(features);
if (!universalModelWasSetByUser)
{
if (universalModel == null)
{
universalModel = new VoicePrint(voicePrint);
}
else
{
universalModel.Merge(features);
}
}
store.Add(userKey, voicePrint);
return(voicePrint);
}
}
public List <Match> FindAudioFilesContainingSpeaker(Stream speakerAudioFile, string toBeScreenedForAudioFilesWithSpeakerFolder)
{
var result = new List <Match>();
var speakerVoicePrint = VoicePrint.FromFeatures(featureExtractor.ProcessAndExtract(speakerAudioFile));
foreach (var file in Directory.GetFiles(toBeScreenedForAudioFilesWithSpeakerFolder, "*.wav", SearchOption.TopDirectoryOnly))
{
using (var fs = new FileStream(file, FileMode.Open))
{
double[][] words = voiceDetector.SplitBySilence(AudioConverter.ConvertAudioToDoubleArray(fs, sampleRate), sampleRate);
int wordsWithinThreshold = 0;
for (int i = 0; i < words.Length; i++)
{
var wordVoicePrint = VoicePrint.FromFeatures(words[i]);
double wordDistance = wordVoicePrint.GetDistance(calculator, speakerVoicePrint);
if (wordDistance < distanceThreshold)
{
wordsWithinThreshold++;
}
}
if (words.Length > 0 && (100.0 * ((double)wordsWithinThreshold / words.Length)) > wordsPctThreshold)
{
var fVoicePrint = VoicePrint.FromFeatures(featureExtractor.ProcessAndExtract(fs));
double fDistance = fVoicePrint.GetDistance(calculator, speakerVoicePrint);
if (fDistance < distanceThreshold)
{
result.Add(new Match(file, fDistance));
}
}
}
}
return(result);
}
public List <Match> FindAudioFilesContainingSpeaker(Stream speakerAudioFile, string toBeScreenedForAudioFilesWithSpeakerFolder)
{
var result = new List <Match>();
var speakerPrint = VoicePrint.FromFeatures(featureExtractor.ProcessAndExtract(speakerAudioFile));
foreach (var file in Directory.GetFiles(toBeScreenedForAudioFilesWithSpeakerFolder, "*.wav", SearchOption.TopDirectoryOnly))
{
using (var fs = new FileStream(file, FileMode.Open))
{
var vp_test = VoicePrint.FromFeatures(featureExtractor.ProcessAndExtract(fs));
var distance = vp_test.GetDistance(calculator, speakerPrint);
if (distance > distanceThreshold)
{
result.Add(new Match(file, distance));
}
}
}
return(result);
}