// Read in a sample and convert it to mono
float[] ReadMonoPCM()
{
int size = SAMPLE_SIZE;
// If stereo
if (PCMStream.WaveFormat.Channels == 2)
{
size *= 2;
}
float[] output = new float[size];
// Read in a sample
if (PCMStream.Read(output, 0, size) == 0)
{
// If end of audio file
return(null);
}
// If stereo, convert to mono
if (PCMStream.WaveFormat.Channels == 2)
{
return(ConvertStereoToMono(output));
}
else
{
return(output);
}
}
public void DetectOnsets(float sensitivity = 1.5f)
{
onsetDetection = new OnsetDetection(PCMStream.WaveFormat.SampleRate, 1024);
// Has finished reading in the audio file
// Set the pcm data back to the beginning
SetTrackPosition(0);
float[] buf = new float[SAMPLE_SIZE];
var readtotal = 0;
do
{
var read = PCMStream.Read(buf, 0, buf.Length);
readtotal += read;
if (read == 0)
{
break;
}
// Read in audio data and find the flux values until end of audio file
onsetDetection.AddFlux(buf);
}while (readtotal < PCMStream.Length);
Console.WriteLine("Finished adding flux!");
// Find peaks
onsetDetection.FindOnsets(sensitivity);
}
