Here is a series of videos on Signal Processing, including some topics in digital signal processing, convolution, z-transform, Fourier representation, sampling and other topics.
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Added by John Santiago on November 28, 2009 at 4:00pm —
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If and when technical subjects like physics or engineering are to be taught online interactive simulations and experiments must be available to reinforce important concepts.
Here, is one resource that provides fun, interactive, research-based simulations of physical phenomena from the PhET(Physics Education Technology) project at the University of Colorado. This is an ongoing project with over sixty simulations designed to teach physics, ch… Continue
Added by John Santiago on November 17, 2009 at 10:30am —
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One of many videos on digital signal processing. Initial background is needed to discuss the basics of DSP. Here, we talk about the remarkable mathematical relationship and formula known as Euler's formula.
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Added by John Santiago on November 15, 2009 at 2:40pm —
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This is an introduction to digital signal processing. Here, we begin with an introduction with geometric series and its application to finding the Fourier Transform for discrete-time signals.
More videos will be upcoming as to explain the Fourier Representation. Continue
Added by John Santiago on November 15, 2009 at 11:30am —
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For those who have kids and have trouble with algebra or to those who just want to sharpen their math skills and help people who find math challenging, here's a resource I found at http://www.algebra.com where there are over 1000 tutors available.
I've used to this resource to help many students. For example, here are over 1200 solutions I've pos… Continue
Added by John Santiago on October 18, 2009 at 11:30am —
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Here's the first of a series on the z-Transform. Comments are welcomed.
We introduce the z-transform bringing polynomials and rational functions to help analyze linear discrete-time systems. The discrete-time convolution (or FIR convolution) is equivalent to polynomial multiplication and algebraic operations in the z transform domain can be translated as combining or decomposing linear time-invariant (LTI) systems. The most common z-transforms are rational functions, that is, the numerator poly… Continue
Added by John Santiago on July 6, 2009 at 6:53am —
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In many design instances, we frequently need to connect between circuits requiring an interface. As a result, there are analytical techniques used to handle these situations.
Usually, signals from another circuits feeds into a another part of a circuit, called a load circuit. The one generating the signal is called the source circuit. This interaction between the source and load circuit at the interface is a key design issue.
One of the most valuable analytical tools to help simplifly and deal… Continue
Added by John Santiago on April 18, 2009 at 9:45am —
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You can view the convolution as the inverse z-Transform of Y(z)=H(z)U(z) where Y(z), H(z), and U(z) are the Laplace Transform of the output response, impulse system response, and input signal, respectively. DVDs are in progress and are based on market demand on selected topics.
Part 1 - IntroductionPart 2 - Discrete-time Convolution Example… Continue
Added by John Santiago on March 11, 2009 at 2:30pm —
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Here's a series of over 30 videos on Circuit Analysis and Design that I posted at http://www.YouTube.com/drjctu.
Let me know if you find them useful.
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Added by John Santiago on March 10, 2009 at 9:00am —
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All,
Here's the link to various videos posted on YouTube from FreedomUniversity.TV.
http://www.YouTube.com/drjctu
Below is a playlist on Circuit Analysis and Design:
Here is a playlist on tutorials or examples on how to use Matlab or Simulink.… Continue
Added by John Santiago on January 25, 2009 at 4:30pm —
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I've recently found a set of videos on YouTube posted by Stanford University. The course is entitled,Fourier Transform and Its Applications. In the layout at the above link, I would add lecture notes to follow the video lecture (I assume Stanford has those available for their students and if you read on the description and click on the appropriate link at YouTube you can find the lecture notes).
Bel… Continue
Added by John Santiago on October 6, 2008 at 7:30pm —
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Here is a Matlab demonstration using Simulink on synchronous detection.
Synchronous detection is used to demodulate Double Sideband Suppressed Carrier AM (DSB-SC AM). Also known as coherent or homodyne detection, the scheme requires phase information to track the phase drift of the transmitted carrier in order for this detection scheme to work.
A basic component used to achieve this detection scheme is a phase-locked loop (PLL) circuit. The PLL circuit is more complicated than the envelope det… Continue
Added by John Santiago on June 27, 2008 at 2:30pm —
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Here is an example using Matlab's Simulink to demonstrate the concept of Amplitude Modulation. Two types of amplitude modulation schemes are discussed: Double Sideband Suppressed Carrier (DSB-SC) AM and Double Sideband Large Carrier (DSB-LC) AM. DSB-LC AM is used your standard and commercial AM radio.
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Added by John Santiago on June 25, 2008 at 5:00pm —
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You can view the convolution as the inverse z-Transform of Y(z)=H(z)U(z) where Y(z), H(z), and U(z) are the Laplace Transform of the output sequence response, impulse system response, and input sequence, respectively. DVDs are in progress and are based on market demand on selected topics.
Part 1 - Introduction This is an introduction to the convolution sum before giving you an example in Part 2.
Part 2 - Discrete-Time Convolution Example… Continue
Here are updated videos on the Continuous-Time Convolution Problem.
Part 1- Introduction (to be posted soon)Part 2 - Continuous-Time Convolution Example
You can view the convolution as a time-domain representation (inverse Laplace Transform) of the the following relationship in the frequency domain description Y(s)=H(s)X(s) where Y(s), H(s), and X(s) as the Laplace Transform of the output signal, impulse response, and input signal, respectivefully.… Continue
Added by John Santiago on April 20, 2008 at 3:30pm —
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This blog will discuss orbital mechanics. Please visit this blog article as I will be posting more updated videos on this topic.
Keppler's Three LawsPart 2 - Two-Body Diagram, and Specific Mechanical Energy… Continue
Added by John Santiago on April 7, 2008 at 1:00pm —
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This article consist of videos to build an origami sphere. Below is a final assembly of the origami sphere using hexagonal flat units. This version has windows and is known as a truncated isosahedron.
Videos on building hexagonal flat units and joint units is shown here first.
Video on Final Assembly. You will need twenty hexagonal flat units and thirty joints based on the above video to complete the final assemble.… Continue
Added by John Santiago on March 24, 2008 at 8:30pm —
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Base folds are basic forms serving as a basis for more creative origami figures. They are easy to do and will become like second nature while watching TV. With the appropriate base fold selected, you can bring new creations to life, especially with stop action animation.
You can use these origami figures for animation which in turn can be used to demonstrate sampling.
Part 1: Base Folds 1 and 2 are presented.Part 2: Base Fold 3 is presented.… Continue
Added by John Santiago on March 18, 2008 at 1:00pm —
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Since origami is a creative endeavor in which animation was used as an example to show the concept of sampling, here are some basic folds and instructions used in origami folding. These short videos are posted on You Tube and other similar video sites. There will be another post on Base Folds.
Part 1: Kite Fold, Valley Fold, Mountain FoldPart 2: Inside Reverse Fold, Outside Reverse Fold, Pleat Fold… Continue
Added by John Santiago on March 18, 2008 at 11:00am —
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