public void AnalyzeZeroSamples()
{
var g = new GainAnalyzer(8000);
var res = g.AnalyzeSamples(new double[] {}, null);
Assert.AreEqual(AnalyzerResults.Ok, res);
}
public void AnalyzeTooFewSamples()
{
var analyzer = new GainAnalyzer(8000);
var res = analyzer.AnalyzeSamples(new[] { 0.5, 0.4, 0.3 }, null);
Assert.AreEqual(AnalyzerResults.Ok, res);
Assert.ThrowsException <ArgumentException>(() => analyzer.GetTitleGain());
}
public void AnalyzeMaxVolume()
{
var analyzer = new GainAnalyzer(8000);
var res = analyzer.AnalyzeSamples(
Enumerable.Range(0, 400).Select(a => 32767.0).ToArray(), null);
Assert.AreEqual(AnalyzerResults.Ok, res);
var gain = analyzer.GetTitleGain();
Assert.AreEqual(2.82, gain, 0.00001);
}
public void AnalyzeLargeWindowOfSilence()
{
var analyzer = new GainAnalyzer(8000);
var res = analyzer.AnalyzeSamples(
Enumerable.Range(0, 40000).Select(a => 0.0).ToArray(), null);
Assert.AreEqual(AnalyzerResults.Ok, res);
var gain = analyzer.GetTitleGain();
Assert.AreEqual(64.82, gain);
}
public void AnalyzeWhiteNoise()
{
var analyzer = new GainAnalyzer(8000);
var rnd = new Random();
var res = analyzer.AnalyzeSamples(
Enumerable.Range(0, 1000).Select(a => (double)rnd.Next(-32768, 32767)).ToArray(), null);
Assert.AreEqual(AnalyzerResults.Ok, res);
var gain = analyzer.GetTitleGain();
Assert.AreEqual(-16.18, gain, 0.01);
}