### 7. Discrete-Time Fourier Transform Demos - MATLAB 2

A table of DTFT pairs is usually given as a list of formulas for the signal $$x[n]$$ and its DTFT $$X(e^{j \hat\omega})$$. These formulas can be visualized as plots, and this demo focuses on the ability to recognize signals and transforms in a graphical form.
The Filter Design Demo is a program that designs simple FIR (and IIR) digital filters, along with tutorial visualizations of the filter design process.

Features:

• FIR Design with many different window types
• Numerous plot options: magnitude/phase response, pole-zero diagram, and impulse response
• IIR Design of Butterworth filters
• Parks-McClellan FIR Design showing the iterations of the Remez Exchange method