public void CalcBurgPred_SinusoidalInput_ReturnsPrediction()
{
const int historyLength = 512;
var inputAudio = new float[historyLength + 1];
for (var i = 0; i < inputAudio.Length; i++)
{
inputAudio[i] = (float)Math.Sin(2 * Math.PI * i /
(historyLength / 5.2));
}
AudioData audioData =
new AudioDataMono(inputAudio);
for (var index = 0; index < audioData.LengthSamples(); index++)
{
audioData.SetOutputSample(
index,
audioData.GetInputSample(index));
}
var prediction = ClickRepairer.CalcBurgPred(
audioData,
historyLength);
Assert.AreEqual(
prediction,
inputAudio[inputAudio.Length - 1],
0.000001);
}
public void FindLengthOfClick_DamagedSinusoidalInput_ReturnsLength(int shift)
{
const int historyLength = 512;
const int signalLength = 5 * historyLength;
const int damageLength = 10;
var damageStartPosition = signalLength / 2 + shift;
var inputAudio = new float[signalLength];
for (var index = 0; index < inputAudio.Length; index++)
{
inputAudio[index] =
(float)Math.Sin(2 * Math.PI * index / (historyLength / 5.2));
}
for (var index = damageStartPosition;
index < damageStartPosition + damageLength;
index++)
{
inputAudio[index] = 0;
}
AudioData audioData =
new AudioDataMono(inputAudio);
for (var index = historyLength;
index < audioData.LengthSamples() - historyLength;
index++)
{
audioData.SetOutputSample(
index,
audioData.GetInputSample(index));
var prediction = ClickRepairer.CalcBurgPred(
audioData,
index);
audioData.SetPredictionErr(index,
prediction - audioData.GetInputSample(index));
}
HelperCalculator.CalculateErrorAverageCpu(
audioData,
historyLength,
audioData.LengthSamples(),
historyLength);
audioData.SetCurrentChannelIsPreprocessed();
audioData.BackupCurrentChannelPredErrors();
var result = ClickLengthFinder.FindLengthOfClick(audioData, damageStartPosition, 250, 0);
Assert.AreEqual(damageLength, result.Length, 1);
}
public async Task AudioInputOutputSaveLoadTest()
{
var taskProgress = new Progress <double>();
var taskStatus = new Progress <string>();
var audioInputOutput =
new AudioInputOutput();
await audioInputOutput.Init(taskProgress);
var audioLength = 44100;
var inputAudio = new float[audioLength];
for (var i = 0; i < inputAudio.Length; i++)
{
inputAudio[i] = (float)Math.Sin(2 * Math.PI * i /
((float)audioLength / 5));
}
var audioData =
new AudioDataMono(inputAudio);
for (var index = 0; index < audioData.LengthSamples(); index++)
{
audioData.SetOutputSample(
index,
audioData.GetInputSample(index));
}
audioInputOutput.SetAudioData(audioData);
var testFolder = KnownFolders.MusicLibrary;
var audioOutputFile = await testFolder.GetFileAsync("test.wav");
if (audioOutputFile != null)
{
await audioInputOutput.SaveAudioToFile(audioOutputFile, taskStatus);
}
}