This is Free Application of Matlab programming ( Programs ) about Digital Signal Processing
( DSP ).

Some of the Topics:
-Basic plotting of Fourier Transform in MATLAB
-Fast Fourier Transform
-Discrete Fourier Transform
-Discrete Fourier Transform Properties
-DSP : Digital Filter Design
-View PDF File of Matlab Programs about DSP

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Millions of engineers and scientists worldwide use MATLAB® to analyze and design the systems and products transforming our world. MATLAB is in automobile active safety systems, interplanetaryspacecraft, health monitoring devices, smart power grids, and LTE cellular networks. It is used for machine learning, signal processing, image processing, computer vision, communications, controldesign, robotics, and much more.

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About the application:
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Digital signal processing (DSP) is the most powerful technologies that will shape science and engineering in the 21st century. One of the important DSP applications is digital filter.
Various methods of filter designing and analysis have been developed over past three decades. Digital filters are playing a very important role in DSP. Filter designing is the process oftransformation of input sequence to obtain desired output sequence. Filter designing process can be described as an optimization problem where each requirement terms to an error function which shouldbe minimized. Digital filter are of two types, Finite Impulse Response (FIR) filter and Infinite Impulse response (IIR) filter.

The Fourier transform decomposes a function of time (a signal) into the frequencies that make it up, in a way similar to how a musical chord can be expressed as the frequencies (or pitches) of itsconstituent notes. The Fourier transform of a function of time itself is a complex-valued function of frequency, whose absolute value represents the amount of that frequency present in the originalfunction, and whose complex argument is the phase offset of the basic sinusoid in that frequency.

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