Estimate Frequency-Response Models at the Command Line
You can use the etfe
, spa
, and spafdr
commands
to estimate spectral models. The following table provides a brief
description of each command and usage examples.
The resulting models are stored as idfrd
model
objects. For detailed information about the commands and their arguments,
see the corresponding reference page.
Commands for Frequency Response
Command | Description | Usage |
---|---|---|
etfe | Estimates an empirical transfer function using Fourier analysis. | To estimate a model m=etfe(data) |
spa | Estimates a frequency response with a fixed frequency resolution using spectral analysis. | To estimate a model m=spa(data) |
spafdr | Estimates a frequency response with a variable frequency resolution using spectral analysis. | To estimate a model m=spafdr(data,R,w) where |
Validate the model after estimating it. For more information, see Model Validation.