Advanced Analysis Library Only
AnalysisLibErrType TransferFunction (double stimulus[], double response[], int numberOfElements, double dt, double magHf[], double phaseHf[], double *df);
Calculates the single-sided transfer function, also known as the frequency response, from the time-domain stimulus signal and the time-domain response signal of a network under test.
TransferFunction calculates the transfer function Hf as follows:
and transforms this result to single-sided magnitude and phase.
| Input | ||
| Name | Type | Description |
| stimulus | double-precision array | The time-domain signal, usually the network stimulus. |
| response | double-precision array | The time-domain signal, usually the network response. |
| numberOfElements | integer | Number of elements in the input stimulus and response arrays. Default Value: 1024. |
| dt | double-precision | Sampling period of the time-domain signals, usually in seconds. Default Value: 1.0. |
| Output | ||
| Name | Type | Description |
| magHf | double-precision array | Magnitude of the averaged single-sided transfer function between the stimulus and response signals. This array must be at least numberOfElements/2 elements long. |
| phaseHf | double-precision array | Phase, in radians, of the averaged single-sided transfer function between the stimulus and response signals. This array must be at least numberOfElements/2 elements long. |
| df | double-precision | Points to the frequency interval, in Gertz, if dt is in seconds. df = 1/(numberOfElements × dt) |
| Name | Type | Description |
| status | AnalysisLibErrType | A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants. |