# Translations:Model used for deconvolution/17/en

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Other filters can be derived from a minimum-phase wavelet (Robinson, 1998^{[1]}). For example, we can divide the wavelet into two parts. One part consists of the wavelet’s first coefficients and is called its *head*. The other part consists of all the coefficients beyond and is called the wavelet’s *tail*. Such shaping operators can be computed by least squares. The shaping operator that shapes the wavelet into its head is called the *head-shaping operator*. Within computational accuracy, this operator is the same as the prediction-error operator for the trace for prediction distance . The shaping operator that shapes the wavelet into its tail is called the *tail-shaping operator*.

- ↑ Robinson, E. A., 1998, Model-driven predictive deconvolution: Geophysics,
**63**, 713-722.