protected virtual void Dispose(bool isDisposing)
{
if (!alreadyDisposed)
{
if (audioEngine != null)
{
audioEngine.Close();
audioEngine = null;
}
}
}
private FingerprintSignature MakeSubFingerID(string key, string filename)
{
FingerprintSignature fingerprint = null;
AudioEngine audioEngine = new AudioEngine();
try
{
SpectrogramConfig spectrogramConfig = new DefaultSpectrogramConfig();
AudioSamples samples = null;
try
{
// First read audio file and downsample it to mono 5512hz
samples = audioEngine.ReadMonoFromFile(filename, spectrogramConfig.SampleRate, 0, -1);
}
catch
{
return(null);
}
// No slice the audio is chunks seperated by 11,6 ms (5512hz 11,6ms = 64 samples!)
// An with length of 371ms (5512kHz 371ms = 2048 samples [rounded])
fingerprint = audioEngine.CreateFingerprint(samples, spectrogramConfig);
if (fingerprint != null)
{
fingerprint.Reference = key;
}
}
finally
{
if (audioEngine != null)
{
audioEngine.Close();
audioEngine = null;
}
}
return(fingerprint);
}