public PitchShifter(AutoTuneSettings settings)
{
this.settings = settings;
numshifts = 5000;
shifts = new Queue<PitchShift>(numshifts);
currPitch = 0;
attack = 0;
numElapsed = 0;
vibRate = 4.0;
vibDepth = 0.00;
g_time = 0.0;
}
public AutoTuneWaveProvider(IWaveProvider source, AutoTuneSettings autoTuneSettings)
{
this.autoTuneSettings = autoTuneSettings;
if (source.WaveFormat.SampleRate != 44100)
throw new ArgumentException("AutoTune only works at 44.1kHz");
if (source.WaveFormat.Encoding != WaveFormatEncoding.IeeeFloat)
throw new ArgumentException("AutoTune only works on IEEE floating point audio data");
if (source.WaveFormat.Channels != 1)
throw new ArgumentException("AutoTune only works on mono input sources");
this.source = source;
this.pitchDetector = new AutoCorrelator(source.WaveFormat.SampleRate);
this.pitchShifter = new SmbPitchShifter(Settings);
this.waveBuffer = new WaveBuffer(8192);
}
public static void ApplyAutoTune(string fileToProcess, string tempFile, AutoTuneSettings autotuneSettings)
{
using (var reader = new WaveFileReader(fileToProcess))
{
IWaveProvider stream32 = new Wave16ToFloatProvider(reader);
IWaveProvider streamEffect = new AutoTuneWaveProvider(stream32, autotuneSettings);
IWaveProvider stream16 = new WaveFloatTo16Provider(streamEffect);
using (var converted = new WaveFileWriter(tempFile, stream16.WaveFormat))
{
// buffer length needs to be a power of 2 for FFT to work nicely
// however, make the buffer too long and pitches aren't detected fast enough
// successful buffer sizes: 8192, 4096, 2048, 1024
// (some pitch detection algorithms need at least 2048)
var buffer = new byte[8192];
int bytesRead;
do
{
bytesRead = stream16.Read(buffer, 0, buffer.Length);
converted.Write(buffer, 0, bytesRead);
} while (bytesRead != 0 && converted.Length < reader.Length);
}
}
}
public SmbPitchShifter(AutoTuneSettings settings, float sampleRate)
: base(settings, sampleRate)
{
}
public SmbPitchShifter(AutoTuneSettings settings) : base(settings) { }
public VoiceRecorderState(string recordingFileName, string effectedFileName)
{
this.RecordingFileName = recordingFileName;
this.EffectedFileName = effectedFileName;
this.autoTuneSettings = new AutoTuneSettings();
}
public SmbPitchShifter(AutoTuneSettings settings, float sampleRate) : base(settings, sampleRate)
{
}