This document presents a mini presentation on the topic of "windowing". It discusses the necessity of windowing signals to avoid discontinuity problems and improve Fourier transform results. Windowing involves multiplying a signal by a mathematical function that is zero outside of a chosen interval. Several common window functions are described such as Hanning, rectangular, triangular, and trapezoid windows. An example of windowing a speech signal is shown.

1. A Mini Presentation
On
‘ Windowing ’
Tanjarul Islam Mishu
[@tanjarul26]
Dept. of CSE
Jatiya Kabi Kazi Nazrul Islam University

2. Outlines
 What is Window? Necessity of Window.
 Applying Window & Its Result.
 Windowing on Speech Signal.
 Several Windows Examples.

3. Signal in Frequency Domain
Window
Why Windowing:
 For better Fourier Transform Result.
 To avoid jump discontinuity problem.
Window is a mathematical function
that is zero-valued outside of some
chosen interval.

4. Windowing attempts to do the following:
 Keep the windowed signal similar to the original in the
central regions.
 Reduce or eliminate the discontinuities in the implicit
periodic signal.
Windowing

5. Some Window Examples:
 Hanning
 Rectangular
 Triangular
 Trapezoid:
Windowing on Speech Signal
Fig : Window Operation on Speech Signal