public void ImpulseResponseTest()
{
var impulseResponse = new double[]
{
0.65471754919057201,
-0.41719110093654077,
-0.29887670227185281,
-0.17887455470804403,
-0.07495271913491164,
0.00420364664357312,
0.05661585665848813,
0.08464252576943176,
0.09295574981587507,
0.08701260448316661,
0.07203835103345660,
0.05245619317269765,
0.03165979792384682,
0.01201734200381667,
-0.00499199754056533,
-0.01858620452338062,
-0.02848579851610977,
-0.03474661966479594,
-0.03763251723486896,
-0.03752819499746086,
-0.03488535222082659
};
var bq1 = new Biquad(1.0, -1.973416440674660, 1.0, -1.450197273018358, 0.596145071222633);
var bq2 = new Biquad(1.0, -1.994429119281506, 1.0, -1.880440530016805, 0.946873330944877);
var g = 0.654717549190572;
var input = 1.0;
for (var i = 0; i < 20; i++)
{
var output = g * bq2.Filter(bq1.Filter(input));
// This should be near enough :D
Assert.IsTrue(Math.Abs(output - impulseResponse[i]) < 0.00000000000001);
input = 0.0;
}
}
/// <summary>
/// Filter a single sample
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public double Filter(double input)
{
return(g * bq2.Filter(bq1.Filter(input)));
}
