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Transform Data

Transform data between time and frequency domains

Functions

fft Transform iddata object to frequency domain data
ifft Transform iddata objects from frequency to time domain
etfe Estimate empirical transfer functions and periodograms
spa Estimate frequency response with fixed frequency resolution using spectral analysis
spafdr Estimate frequency response and spectrum using spectral analysis with frequency-dependent resolution

Examples and How To

Transform Time-Domain Data in the App

Transform time-domain data to frequency-domain or frequency-response data.

Transform Frequency-Domain Data in the App

Transform frequency-domain input-output data to time-domain or frequency-response data.

Transform Frequency-Response Data in the App

Transform frequency-response data to frequency-domain input-output data or to frequency-response data with a different frequency resolution.

Concepts

Supported Data Transformations

Transform between time-domain and frequency-domain data at the command line.

Transforming Between Time and Frequency-Domain Data

Transform between time-domain and frequency-domain iddata objects at the command line.

Transforming Between Frequency-Domain and Frequency-Response Data

Transform between iddata and idfrd objects at the command line.

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