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Baldwin explains the underlying signal processing concepts that make the Fast Fourier Transform (FFT) algorithm possible.

Revised: Mon Oct 19 13:36:25 CDT 2015

This page is included in the following book: Digital Signal Processing - DSP

Table of contents

Preface

Programming in Java doesn't have to be dull and boring. In fact, it's possible to have a lot of fun while programming in Java. This module wastaken from a series that concentrates on having fun while programming in Java.

Viewing tip

I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the Figuresand Listings while you are reading about them.

Figures

  • Figure 1. Transform of pulse with negative slope.
  • Figure 2. Transform of pulse with positive slope.
  • Figure 3. Transform of the sum of two pulses.
  • Figure 4. Transform of an impulse with no shift.
  • Figure 5. Transform of an impulse with a shift equal to one sample interval and a negative value.
  • Figure 6. Transform of an impulse with a shift equal to two sample intervals and a positive value.
  • Figure 7. Transform of an impulse with a shift equal to four sample intervals and a positive value.
  • Figure 8. Transform of a complex impulse with a shift equal to two sample intervals.
  • Figure 9. Case A. Transform of a real sample with two non-zero values.
  • Figure 10. The numeric output for Case A.
  • Figure 11. Case B in graphical form.
  • Figure 12. Case B output in numeric form.
  • Figure 13. The graphic form of Case C.
  • Figure 14. Case C output in numeric form.

Listings

General discussion

The purpose of this module is to help you to understand how the Fast Fourier Transform (FFT) algorithm works. In order to understand theFFT, you must first understand the Discrete Fourier Transform (DFT). I explained how the DFT works in an earlier module titled Fun with Java, How and Why Spectral Analysis Works .

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
how did you get the value of 2000N.What calculations are needed to arrive at it
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Source:  OpenStax, Digital signal processing - dsp. OpenStax CNX. Jan 06, 2016 Download for free at https://legacy.cnx.org/content/col11642/1.38
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