/// <summary>
/// Выбор конкретного коэффициента затухания акустического тракта.
/// </summary>
/// <returns>Интерфейс для расчета коэффициента затухания акустического тракта.</returns>
private AcousticAttenuation ChoiceAcousticAttenuation()
{
AcousticAttenuation acousticAttenuation;
var thickness = TestObject.Thickness;
var fresnelDistance = Converter.CalcFresnelDistance(TestObject.Material);
var fraunhoferDistance = Converter.CalcFraunhoferDistance(TestObject.Material);
if (thickness <= fresnelDistance)
{
acousticAttenuation = new AttenuationFresnelPlane(Converter, TestObject);
IsFresnelZone = true;
}
else if (thickness >= fraunhoferDistance)
{
acousticAttenuation = new AttenuationFraunhoferPlane(Converter, TestObject);
IsFresnelZone = false;
}
else
{
throw new ArithmeticException("Контроль в переходной зоне не возможен. Измените входные параметры.");
}
return(acousticAttenuation);
}
public void AttenuationFraunhoferPlaneTestInitialize()
{
// arrange
double speedOfSound = 340;
double density = 1.2;
double fspl = 1.1;
Material materialPEC = new Material(speedOfSound, density, fspl);
double amplitude = 15;
double frequency = 4000;
AcousticWave acousticWave = new AcousticWave(amplitude, frequency);
double radius = 0.02;
RoundPEC roundPEC = new RoundPEC(radius, materialPEC, acousticWave);
double speedOfSound2 = 3000;
double density2 = 1.2;
double fspl2 = 1.1;
Material materialTO = new Material(speedOfSound2, density2, fspl2);
TestObject testObject = new TestObject(materialTO, 0.2);
attenuation = new AttenuationFresnelPlane(roundPEC, testObject);
}
