Using the Signals and Systems Lab in the classroom
This lab is the perfect tool for courses in Signals and Systems, helping students to understand such phenomena in both the time and transform domains. It contains more than 100 functions to solve problems involving filtering, convolution, modulation, sampling, stability of systems and feedback system analysis. Key elements include:

Spectral analysis smoothing with the Blackman-Tukey method.
- Linear time-invariance (LTI) analysis—Perform time-domain analysis of linear time-invariant (LTI) systems and analyze their properties through determination and examination of the impulse response
- Signals analysis—Fourier transform methods, frequency domain methods, Laplace transforms, z-transforms, and analyzing feedback systems using transforms methods
- Easy-to-use graphical user interfaces—Three separate GUIs facilitate application-oriented tasks such as the determination and visualization of spectra, probability density functions, dynamic responses of SISO/MIMO systems, ARMA time-series analyses, and LTI systems. Each GUI contains advanced commands, interactive tools, and graphics capabilities relevant for the supported disciplines
- Access from COMSOL Script—All commands and algorithms can be accessed via the COMSOL Script command-line interfaces. This includes filtering, windowing, feedback control systems, and algorithms converting state-space representations of transfer functions
- Visualization—High-level functions quickly create quality illustrations from datasets
