protected internal virtual SpeechClassifiedData classify(DoubleData audio)
{
double num = SpeechClassifier.logRootMeanSquare(audio.getValues());
this._isSpeech = false;
if (num >= this.minSignal)
{
this.level = (this.level * (double)1f + num) / 2.0;
if (num < this.background)
{
this.background = num;
}
else
{
this.background += (num - this.background) * this.adjustment;
}
if (this.level < this.background)
{
this.level = this.background;
}
this._isSpeech = (this.level - this.background > this.threshold);
}
SpeechClassifiedData speechClassifiedData = new SpeechClassifiedData(audio, this._isSpeech);
if (this.logger.isLoggable(Level.FINEST))
{
string text = "";
if (speechClassifiedData.isSpeech())
{
text = "*";
}
this.logger.finest(new StringBuilder().append("Bkg: ").append(this.background).append(", level: ").append(this.level).append(", current: ").append(num).append(' ').append(text).toString());
}
this.collectStats(this._isSpeech);
return(speechClassifiedData);
}
public override Data getData()
{
while (this.outputQueue.isEmpty())
{
Data data = this.getPredecessor().getData();
if (data == null)
{
break;
}
if (data is DataStartSignal)
{
this.reset();
this.outputQueue.add(data);
break;
}
if (data is DataEndSignal)
{
if (this._inSpeech)
{
this.outputQueue.add(new SpeechEndSignal());
}
this.outputQueue.add(data);
break;
}
if (data is SpeechClassifiedData)
{
SpeechClassifiedData speechClassifiedData = (SpeechClassifiedData)data;
if (speechClassifiedData.isSpeech())
{
this.speechCount++;
this.silenceCount = 0;
}
else
{
this.speechCount = 0;
this.silenceCount++;
}
if (this._inSpeech)
{
this.outputQueue.add(data);
}
else
{
this.inputQueue.add(data);
if (this.inputQueue.size() > this.startSpeechFrames + this.speechLeaderFrames)
{
this.inputQueue.remove(0);
}
}
if (!this._inSpeech && this.speechCount == this.startSpeechFrames)
{
this._inSpeech = true;
this.outputQueue.add(new SpeechStartSignal(speechClassifiedData.getCollectTime() - (long)this.speechLeader - (long)this.startSpeechFrames));
this.outputQueue.addAll(this.inputQueue.subList(Math.max(0, this.inputQueue.size() - this.startSpeechFrames - this.speechLeaderFrames), this.inputQueue.size()));
this.inputQueue.clear();
}
if (this._inSpeech && this.silenceCount == this.endSilenceFrames)
{
this._inSpeech = false;
this.outputQueue.add(new SpeechEndSignal(speechClassifiedData.getCollectTime()));
}
}
}
if (!this.outputQueue.isEmpty())
{
object obj = (Data)this.outputQueue.remove(0);
if (((Data)obj) is SpeechClassifiedData)
{
SpeechClassifiedData speechClassifiedData = (SpeechClassifiedData)((Data)obj);
obj = speechClassifiedData.getDoubleData();
}
object obj2 = obj;
Data result;
if (obj2 != null)
{
if ((result = (obj2 as Data)) == null)
{
throw new IncompatibleClassChangeError();
}
}
else
{
result = null;
}
return(result);
}
return(null);
}
