public void TestPhaseVocoding()
{
//string baseFile = "Boston_HitchARide";
string baseFile = "000000";
WaveEncoding.LoadBGCSimple(
filepath: DataManagement.PathForDataFile("Test", $"{baseFile}.wav"),
simpleAudioClip: out SimpleAudioClip song);
song = song.Window(10f).Cache();
//First, write unmodified
WaveEncoding.SaveFile(
filepath: DataManagement.PathForDataFile("Test", $"{baseFile}_Unmodified.wav"),
channels: song.Channels,
sampleRate: (int)song.SamplingRate,
samples: song.Samples,
overwrite: true);
//Next, Slow it down 5%
{
SimpleAudioClip slowed_05 = song.PhaseVocode(0.95f).Cache();
//Next, write it slowed 5%
WaveEncoding.SaveFile(
filepath: DataManagement.PathForDataFile("Test", $"{baseFile}_Slowed_05.wav"),
channels: slowed_05.Channels,
sampleRate: (int)slowed_05.SamplingRate,
samples: slowed_05.Samples,
overwrite: true);
}
//Next, Slow it down 25%
{
SimpleAudioClip slowed_25 = song.PhaseVocode(0.75f).Cache();
//Next, write it slowed 5%
WaveEncoding.SaveFile(
filepath: DataManagement.PathForDataFile("Test", $"{baseFile}_Slowed_25.wav"),
channels: slowed_25.Channels,
sampleRate: (int)slowed_25.SamplingRate,
samples: slowed_25.Samples,
overwrite: true);
}
//Next, Slow it down 50%
{
SimpleAudioClip slowed_50 = song.PhaseVocode(0.5f).Cache();
//Next, write it slowed 5%
WaveEncoding.SaveFile(
filepath: DataManagement.PathForDataFile("Test", $"{baseFile}_Slowed_50.wav"),
channels: slowed_50.Channels,
sampleRate: (int)slowed_50.SamplingRate,
samples: slowed_50.Samples,
overwrite: true);
}
}
public void UpScalingTest()
{
float[] singleChannelSamples = CreateSineWave(1, 22050f);
string upscaledFile = DataManagement.PathForDataFile("Test", "upscaled.wav");
IBGCStream stream = new SimpleAudioClip(
samples: LinearInterpolation.FactorUpscaler(
samples: singleChannelSamples,
factor: 2,
channels: 1),
channels: 1);
Assert.IsTrue(WaveEncoding.SaveStream(
filepath: upscaledFile,
stream: stream,
overwrite: true));
}