Signal Processing Toolbox

SPTool: An Interactive Signal Processing Environment

SPTool is an interactive GUI for digital signal processing that can be used to:

• Analyze signals.
• Design filters.
• Analyze (view) filters.
• Filter signals.
• Analyze signal spectra.

You can accomplish these tasks using four GUIs that you access from within SPTool:

• The Signal Browser is for analyzing signals. You can also play portions of signals using your computer's audio hardware.
• The Filter Designer is for designing or editing the following types of FIR and IIR digital filters:
• Lowpass
• Highpass
• Bandpass
• Bandstop

Most of the Signal Processing Toolbox filter design methods available at the command line are also available in the Filter Designer. Additionally, you can design a filter by using the Pole-Zero Editor to graphically place poles and zeros on the z-plane.

• The Filter Viewer is for analyzing filter characteristics. You can analyze a filter's:
• Magnitude response
• Phase response
• Group delay
• Pole/zero plot
• Impulse response
• Step response
• The Spectrum Viewer is for spectral analysis. You can use the Signal Processing Toolbox spectral estimation methods to estimate the power spectral density of a signal.

SPTool: A Signal Processing GUI Suite

SPTool Data Structures