public FrequencyDomainSignal PerformTransform(List <int> timeDomainSignal)
{
FrequencyDomainSignal result = new FrequencyDomainSignal();
//foreach frequency
for (int k = 0; k <= timeDomainSignal.Count / 2; k++)
{
double accumulatedReal = 0;
double accumulatedImaginary = 0;
for (int i = 0; i < timeDomainSignal.Count; i++)
{
double angle = CalculateCosSinAngle(k, i, timeDomainSignal.Count);
accumulatedReal += timeDomainSignal[i] * Math.Cos(angle);
accumulatedImaginary += timeDomainSignal[i] * Math.Sin(angle);
}
result.RealResult.Add(accumulatedReal);
//must negate imaginary
result.ImaginaryResult.Add(-accumulatedImaginary);
}
return(result);
}
public List <int> PerformInverseTransform(FrequencyDomainSignal frequencyDomainSignal)
{
List <int> result = new List <int>();
return(result);
}