== Topics ==
[[Fourier series - by Ray Betz|Overview of Signals and Systems]]

===Individual Subjects===
*[[Linear Time Invariant System|Linear Time Invariant Systems]]
**[[The Game|"The Game"]]
*[[Orthogonal functions|Orthogonal Functions]]
*[[Energy in a signal|Finding the Energy in a Signal]]
**[[Rayleigh's Theorem]]
*[[Fourier series|Fourier Series]]
*[[Fourier transform|Fourier Transforms]]
**[[Discrete Fourier transform]]
*[[Sampling]]
*[[FIR Filter Example]]
*[[Relationship between e, sin and cos]]

== Some Useful Links to Suppliment or Substitute for a Textbook ==
===Books on Signal Processing===
*[https://ccrma.stanford.edu/~jos/sasp/sasp.html Spectral Audio Signal Processing, by Julius O. Smith III]
===Fourier Series===
*[http://www.intmath.com/Fourier-series/Fourier-intro.php Interactive Mathematics (like a textbook with some examples)]
*[http://mathworld.wolfram.com/FourierSeries.html Mathworld]
*[http://en.wikipedia.org/wiki/Fourier_series Wikipedia]
*[http://web.mit.edu/2.14/www/Handouts/FreqDom.pdf MIT handout on Fourier Series, Fourier Transform, and Laplace Transform]
*[http://www.maths.mq.edu.au/~bon/Fourier%20Theory.pdf Fourier Theory B..M..N.. Clarke]

===Dirac Delta Function and Convolution===
*[http://web.mit.edu/2.14/www/Handouts/Convolution.pdf MIT handout on Dirac Delta Function and Convolution]

===Multi-rate Filtering===

[http://www.google.com/url?url=http://www.mds.com/tech/filter/multirate_article.pdf&rct=j&sa=U&ei=pD_UTJqtKY6ksQPbzPWMCw&ved=0CBUQFjAA&q=Purcell+Multirate+Filters&usg=AFQjCNFsHM7ROpUdrQ6py9ZH_RhQ_BeigA Multirate Filters Introduction]

[http://www.ws.binghamton.edu/fowler/fowler%20personal%20page/EE521_files/IV-05%20Polyphase%20FIlters_2007.pdf Slides from a Presentation on Polyphase Decimation and Interpolation by Mark Fowler]

===Course Pages===
[[2005-2006 Assignments]]

[[2006-2007 Assignments]]

[[2008-2009 Assignments]]

[[2009-2010 Assignments]]

[http://people.wallawalla.edu/~Rob.Frohne/ClassNotes/engr455index.htm Class notes for Signals & Systems]

==Articles==

===Octave Tutorials===
[[Installing Octave on a Mac]] (Chris Lau)

[[Octave and Scilab on a Mac]] (Ben Henry)

[[ASN2 - Octave Tutorial]] (Jodi S. Hodge)

[[A u(t) function example]]

[[FIR Filter Example Code for Octave]]

[[Leakage Example Octave Script]]

[[Interpolation using the DFT Example Script]]

===[[Table of Fourier Transform Properties]]===

==Homework Assignments==
Please put your name next to the assignment, linking it to your submission
* HW #1 - Make a personal page on this wiki ([[Christopher Garrison Lau I|Chris Lau]])([[Jodi S. Hodge]])([[user:chris.wills|Chris Wills]])
* HW #2 - Write a tutorial about installing and/or using Octave ([[Installing Octave on a Mac|Chris Lau]])([[Jodi S. Hodge]])([[Octave|Victor Shepherd]])
* HW #3 - Show graphically that <math> \int_{-\infty}^{\infty} e^{j2\pi f(t-u)}\, df = \delta (t-u)</math> ([[HW 3|Chris Lau]])([[Jodi S. Hodge]])([[user:chris.wills/HW3|Chris Wills]])([[Hw3|Victor Shepherd)]]

* HW #4 - Given a linear time-invariant system where <math>\ u(t) </math> produces an output <math>\ w(t) </math>, find the output due to any function <math>\ x(t) </math> ([[HW 4|Chris Lau]])
* HW #5: ([[HW 5|Chris Lau]])
** Part 1 - Find <math> \mathcal{F}[e^{- \sigma t} x(t)u(t)] </math> and relate it to the Laplace Transform. Derive the Inverse Laplace Transform of this from the inverse Fourier Transform.
** Part 2 - [[Image:20101006KeyDSCN3161.jpg|thumb|300px|center]]

* HW #6 - Pick a property of the Fourier Transform & present it on the Wiki. Make a table with all your properties. Interpret your property. ([[HW 6|Ben Henry]])([[Table of Fourier Transform Properties|Chris Lau]])
* HW #7 - Finish the practice tests
* HW #8 - Make a page about interpolating FIR filters. Note how many multiply/add operations.([[Jodi S. Hodge]])([[Interpolating FIR filters|Chris Lau]])
* HW #9 - Add to #8 writeup how to do a decimating filter and figure out how many multiply & adds are needed for a n/2 decimating low pass filter.([[Jodi S. Hodge]])([[Decimating FIR filters|Chris Lau]])
* HW #10 - Use Octave (or Mathlab or Silab) to plot the frequency response of low pass filters with cut off frequencies of 1/32T, 1/8T, and 1/4T and compare how many coeffficients are needed with an eye to answer the question "Is it less calculation to decimate and then filter, or better to put the filter in the pre-decimation filter?" ([[Jodi S. Hodge]])
* HW #11 - Is our method the same as Mark Flower's? See
[http://www.ws.binghamton.edu/fowler/fowler%20personal%20page/EE521_files/IV-05%20Polyphase%20FIlters_2007.pdf Wiki]. Same # multiply and adds? See Notes 11/3/10. ([[Jodi S. Hodge]])
* HW #12 - Experiment with a variety of signals having a 3Khz bandwidth to determine the resolution you can get when doing a cross correlation <math> \ r(m) =

\displaystyle\sum\limits_{n=0}^{N-1} x(n) x(n+m) </math>. You can generate the signals randomly and filter them to obtain the band-limited signals.

==People Involved with this Wiki==

===2010-2011 Contributors===
[[Ben Henry|Henry, Ben]]

[[Christopher Garrison Lau I]]

[[user:chris.wills|Chris Wills]]

[[Jodi S. Hodge]]

[[Luke Chilson]]

[[Shepherd,Victor|Victor Shepherd]]

===2009-2010 Contributors===
[[Nick Christman]]

[[Joshua Sarris]]

[[Kevin Starkey]]

[[Max Woesner]]

[[Jodi Hodge]]

[[Corneliu Turturica]]

===2008-2009 Contributors===
[[User:eric.clay|Eric Clay]]

[[User:tsung-lin.yang|Chuck Yang]]

[[User:elton.zebron|Elton Zebron]]

[[User:Luke.chilson|Luke Chilson]]

[[User:Brandon.price|Brandon Price]]

[[User:Fonggr|Greg Fong]]

===2007-2008 contributors===

[[User:baldwin.britton|Baldwin Britton]]

[[User:Harrde|Denver Harris]]

[[User:Pridma|Mark Priddy]]

[[User:ChrisRas|Chris Rasmussen]]

[[User:RothMi|Michael Roth]]

[[User:Rothsa|Sally Roth]]

===2006-2007 contributors===

[[User:Smitry|Ryan J Smith]]

[[User:Nathan|Nathan Ferch]]

[[User:Andrew|Andrew Lopez]]

[[User:Sherna|Nathan Sherman]]

[[User:Adkich|Chris Adkins]]

===2005-2006 contributors===

[[User:GabrielaV|Gabriela Valdivia]]

[[User:SDiver|Raymond Betz]]

[[User:chrijen|Jenni Christensen]]

[[User:wonoje|Jeffrey Wonoprabowo]]

[[User:wilspa|Paul Wilson]]

[[User:Frohro|Instructor: Rob Frohne]]

===2004-2005 contributors===

[[User:Barnsa|Sam Barnes]]

[[User:Santsh|Shawn Santana]]

[[User:Goeari|Aric Goe]]

[[User:Caswto|Todd Caswell]]

[[User:Andeda|David Anderson]]

[[User:Guenan|Anthony Guenterberg]]

Signals and Systems

Cdxskier: /* Fourier Transform Properties */

Signals and Systems

2010-10-26T19:35:24Z

Cdxskier: /* Articles */

Christopher Garrison Lau I

2010-10-26T19:33:12Z

Cdxskier: /* Signals and Systems */

[[Image:Subaru.jpg]]
===Contact info===
Mask me

===Signals and Systems===
[[Installing Octave on Mac]]

[[HW 3]]

[[HW 4]]

[[HW 5]]

===Linear Network Analysis===
[[Fourier Series: Explained!]]

===Engineering Electronics===
[[Ideal vs. Nonideal Op Amps]]

===Electro-Mechanical Energy Conversion===

[[An Application of Electromechanical Energy Conversion: Hybrid Electric Vehicles]]

In draft: [[An Ideal Transformer Example]]

HW 5

2010-10-26T19:32:55Z

Cdxskier:

[[File:HW5.jpg | 900px]]

===Author===

[[Christopher Garrison Lau I]]

Signals and Systems

2010-10-26T19:32:16Z

Cdxskier: /* Homework Assignments */

HW 5

2010-10-26T16:22:55Z

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HW 5

2010-10-26T16:20:50Z

HW 4

2010-10-15T14:42:05Z

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===Author===

[[Christopher Garrison Lau I]]

HW 4

2010-10-15T14:41:35Z

Cdxskier:

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===Author===

[[Lau, Chris|Christopher Garrison Lau I]]

HW 4

2010-10-15T14:40:47Z

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[[File:HW4.jpg | 900px]]

HW 4

2010-10-15T14:39:47Z

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[[File:HW4.jpg]]

Signals and Systems

2010-10-15T14:39:17Z

Cdxskier: /* Homework Assignments */