sptool (Signal Processing Toolbox)

Interactive digital signal processing tool (SPTool).

Syntax

sptool

Description

The sptool command invokes a suite of graphical user interface (GUI) tools that provides access to many of the signal, filter, and spectral analysis functions in the toolbox in a powerful, easy-to-use interactive signal display and exploration environment.

Using SPTool, you can import, export, and manage signals, filters, and spectra. From SPTool, you can activate its four integrated signal processing tools:

The Signal Browser, for viewing, measuring, and analyzing the time-domain information of one or more signals.
The Filter Designer, for designing and editing FIR and IIR filters of various lengths and types, with standard (lowpass, highpass, bandpass, bandstop, and multiband) configurations.
The Filter Viewer, for viewing the characteristics of a designed or imported filter, including its magnitude response, phase response, group delay, pole-zero plot, impulse response, and step response.
The Spectrum Viewer, for graphical analysis of frequency-domain data using a variety of methods of spectral density estimation, including the Burg method, the FFT method, the multitaper method (MTM), the MUSIC eigenvector method, Welch's method, and the Yule-Walker AR method.

See Chapter 5, "Interactive Tools" for a full discussion of how to use SPTool.

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