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### Video 49: LTI System Analyzer using MATLAB GUI (With Code)

Hello Viewers, in this video, a graphical user interface (GUI) is created to analyze any LTI system. This GUI can plot various time response curves such as Impulse response, Step response, Ramp response. It can also give various stability plots such as Root locus, Nyquist plot, Bode plot, Log magnitude vs phase plot and Pole-zero plot.

This tutorial also covers basics of LTI systems.

This video includes following contents:

• Introduction to LTI systems.
• Various (Time domain/ Freq. domain) analysis of LTI systems.
• Creating MATLAB GUI for LTI system analyzer using GUIDE.
• MATLAB code of Call Back functions for various GUI components.
• Program Simulation.

1. Device Control using DTMF signals and MATLAB App designer: Click Here

2. Producing Colors with RGB LEDs using Arduino and MATLAB: Click Here

### Video 48: Denoising of Signals and Images using Wavelet Packet Transform

Hello Viewers, in this video, denoising of signals and images using Wavelet Packet Transform (WPT) is explained.
This tutorial explains the basic theoretical background of WPT based denoising scheme, noise variance estimation and universal threshold calculation. The denoising is implemented in MATLAB to do experiments with different noisy 1D and 2D signals. The concept of full tree and best tree based decomposition is also included.

This video includes following contents:
• Introduction to Wavelet Packet Transform (WPT).
• Objective and Noise Model.
• WPT based Denoising scheme.
• Noise variance estimation and finding universal threshold.
• Thresholding methods.
• MATLAB functions for WPT and WPT based denoising.
• MATLAB code for denoising 1D signals (Audio).
• MATLAB code for denoising 2D signals (Images).