public WavetableData Create(int samplesPerWave)
{
var tableCount = 64;
var waveLen = samplesPerWave;
var output = new WavetableData {
Name = WavetableName, Data = new double[tableCount][]
};
for (int num = 0; num < tableCount; num++)
{
var wave = new double[waveLen];
var breakpoint = (int)(num / 64.0 * waveLen);
var slope = 1.0 / waveLen;
var val = 1.0;
for (int i = 0; i < waveLen; i++)
{
if (i == breakpoint)
{
val = 1.0;
}
wave[i] = val;
val -= slope;
}
output.Data[num] = AudioLib.Utils.Normalize(wave);
}
return(output);
}
public static double[][][] GetWavetable(string wavetableName)
{
// Todo: unused tables never get unloaded
if (wavetables.ContainsKey(wavetableName))
{
return(wavetables[wavetableName]);
}
var data = WavetableData.FromFile(WavetableFiles[wavetableName]);
var transformed = TransformWavetable(data.Data);
wavetables[wavetableName] = transformed;
return(wavetables[wavetableName]);
}
public WavetableData Create(int samplesPerWave)
{
var tableCount = 64;
var waveLen = samplesPerWave;
var output = new WavetableData {
Name = "Pulse Wave", Data = new double[tableCount][]
};
for (int num = 0; num < tableCount; num++)
{
var wave = new double[waveLen];
var breakpoint = (int)((0.5 + num / 64.0 * 0.5) * waveLen);
for (int i = 0; i < waveLen; i++)
{
wave[i] = (i <= breakpoint) ? 1.0 : -1.0;
}
output.Data[num] = wave;
}
return(output);
}
public WavetableData Create(int samplesPerWave)
{
var tableCount = 64;
var waveLen = samplesPerWave;
var output = new WavetableData {
Name = "Quantz Waves", Data = new double[tableCount][]
};
var rand = new Random(42);
var waves = Waves.Select(x => x).ToList();
while (waves.Count < tableCount)
{
var randomWave = Enumerable.Range(0, 8).Select(x => rand.NextDouble() * 10).ToArray();
waves.Add(randomWave);
}
var upsample = waveLen / 8;
for (int w = 0; w < waves.Count; w++)
{
var wave = waves[w];
var newWave = new List <double>();
for (int i = 0; i < wave.Length; i++)
{
for (int j = 0; j < upsample; j++)
{
newWave.Add(wave[i]);
}
}
output.Data[w] = AudioLib.Utils.Normalize(newWave.ToArray());
}
return(output);
}
