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2020-11-29 12:28:25
30-Day Money-Back Guarantee

This course includes:

  • 6.5 hours on-demand video
  • 11 articles
  • 9 downloadable resources
  • Full lifetime access
  • Access on mobile and TV
IT & Software Other IT & Software Signal Processing

Master the Fourier transform and its applications

Learn the Fourier transform in MATLAB and Python, and its applications in digital signal processing and image processing
Bestseller
Rating: 4.7 out of 54.7 (1,309 ratings)
8,873 students
Created by Mike X Cohen
Last updated 1/2021
English
English [Auto]
30-Day Money-Back Guarantee

What you'll learn

  • Learn about one of the single most important equations in all of modern technology and therefore human civilization.
  • The fundamental concepts underlying the Fourier transform
  • Sine waves, complex numbers, dot products, sampling theorem, aliasing, and more!
  • Interpret the results of the Fourier transform
  • Apply the Fourier transform in MATLAB and Python!
  • Use the fast Fourier transform in signal processing applications
  • Improve your MATLAB and/or Python programming skills
  • Know the limitations of interpreting the Fourier transform.
Curated for the Udemy for Business collection

Requirements

  • A curious mind!
  • Some MATLAB or Python experience is useful but not required
  • High-school math (calculus is not necessary)
  • Previous knowledge of the Fourier transform is NOT necessary!
  • * Manually correct English captions *

Description

The Fourier transform is one of the most important operations in signal processing and modern technology, and therefore in modern human civilization. But how does it work, and why does it work?


What you will learn in this course:

You will learn the theoretical and computational bases of the Fourier transform, with a strong focus on how the Fourier transform is used in modern applications in signal processing, data analysis, and image filtering. The course covers not only the basics, but also advanced topics including effects of non-stationarities, spectral resolution, normalization, filtering. All videos come with MATLAB and Python code for you to learn from and adapt!

This course is focused on implementations of the Fourier transform on computers, and applications in digital signal processing (1D) and image processing (2D). I don't go into detail about setting up and solving integration problems to obtain analytical solutions. Thus, this course is more on the computer science/data science/engineering side of things, rather than on the pure mathematics/differential equations/infinite series side.


This course is for you if you are an aspiring or established:

  • Data scientist

  • Statistician

  • Computer scientist (MATLAB and/or Python)

  • Signal processing or image processing expert (or aspiring!)

  • Biologist

  • Engineer

  • Student

  • Curious independent learner!


What you get in this course:

  • >6 hours of video lectures that include explanations, pictures, and diagrams

  • pdf readers with important notes and explanations

  • Many exercises and their solutions! (Note: exercises are in the pdf readers)

  • MATLAB code, Python code, and sample datasets for applications

With >3000 lines of MATLAB and Python code, this course is also a great way to improve your programming skills, particularly in the context of signal processing and image processing.


Why I am qualified to teach this course:

I have been using the Fourier transform extensively in my research and teaching (primarily in MATLAB) for nearly two decades. I have written several textbooks about data analysis, programming, and statistics, that rely extensively on the Fourier transform. Most importantly: I have taught the Fourier transform to bachelor's students, PhD students, professors, and professionals, and I have taught to people from many backgrounds, including biology, psychology, physics, mathematics, and engineering.


So what are you waiting for??

Watch the course introductory video to learn more about the contents of this course and about my teaching style. And scroll down to see what other students think of this course and of my teaching style.

I hope to see you soon in the course!

Mike


Who this course is for:

  • Students who need to know the Fourier transform for courses.
  • Scientists who need to know the Fourier transform for research.
  • Data scientists who need to do spectral analysis.
  • Someone doing digital signal processing or image processing (filtering, signal separation, etc.)
  • Someone who learned the FT by solving integral equations but wants more insight into what it means.
  • Programmers looking for tips about optimizing code that involves FFT.
  • Someone who is curious what the Fourier transform is and why it's so important.
  • Someone who uses the FFT but wants a better understanding of what it means, why it works, and how to interpret the results.

Featured review

Carter Sturm
Carter Sturm
7 courses
2 reviews
Rating: 5.0 out of 5a year ago
This course accomplishes more than just teaching how to use the Fourier transform as a tool. It is the clearest explanation of the concept that I have ever seen and it helped me to finally wrap my mind around it. This course was time well spent and I highly recommend it to others.

Course content

10 sections • 57 lectures • 6h 43m total length

  • Course materials (reader, MATLAB code, Python code)
    00:00
  • Preview06:37
  • Preview11:51
  • MATLAB, Octave, Python, or just watch
    03:17
  • Using Udemy like a pro
    07:57

  • Course materials (reader, MATLAB code, Python code, exercises)
    00:04
  • Complex numbers
    14:07
  • xkcd explanation of why we need complex numbers
    00:00
  • Preview09:34
  • Sine waves and complex sine waves
    14:02
  • Dot product
    16:33
  • Complex dot product
    09:07

  • Course materials (reader, MATLAB code, Python code, exercises)
    00:02
  • How the discrete Fourier transform works
    12:12
  • Converting indices to frequencies
    08:40
  • Converting indices to frequencies: part 2
    13:21
  • Shortcut: Converting indices to frequencies
    10:05
  • Normalized time vector
    09:35
  • Positive and negative frequencies
    04:52
  • Accurate scaling of Fourier coefficients
    Preview06:32
  • Interpreting phase values
    05:12
  • Averaging Fourier coefficients
    09:02
  • The DC (zero frequency) component
    07:44
  • Amplitude spectrum vs. power spectrum
    06:52
  • A note about terminology of Fourier features
    05:07

  • Course materials (reader, MATLAB code, Python code, exercises)
    00:01
  • How and why it works
    10:50
  • Inverse Fourier transform for bandstop filtering
    Preview07:23

  • Course materials (reader, MATLAB code, Python code, exercises)
    00:03
  • How it works, speed tests
    07:12
  • The fast inverse Fourier transform
    02:11
  • The perfection of the Fourier transform
    06:51
  • Using the fft on matrices
    07:26

  • Course materials (reader, MATLAB code, Python code, exercises)
    00:02
  • Sampling and frequency resolution
    16:21
  • Preview11:15
  • Frequency-domain zero padding
    07:51
  • Sampling rate vs. signal length
    09:14
  • Course tangent: self-accountability in online learning
    03:03

  • Course materials (reader, MATLAB code, Python code, exercises)
    00:02
  • Aliasing
    10:07
  • Signal stationarity and non-stationarities
    05:41
  • Preview16:01
  • Solution to understanding nonstationary time series
    13:10
  • Windowing and Welch's method
    09:51
  • Instantaneous frequency
    11:35

  • Course materials (reader, MATLAB code, Python code, exercises)
    00:02
  • How the 2D FFT works
    Preview11:15

  • Course materials (reader, MATLAB code, Python code, exercises)
    00:02
  • Rhythmicity in walking (gait)
    06:08
  • Rhythmicity in electrical brain waves
    07:05
  • Time series convolution
    03:14
  • Narrowband temporal filtering
    08:17
  • 2D image filtering
    07:33
  • Image narrowband filtering
    05:56
  • Real data from trends.google.com!
    04:11

  • Bonus lecture
    00:48

Instructor

Mike X Cohen
Neuroscientist, writer, professor
Mike X Cohen
  • 4.5 Instructor Rating
  • 20,488 Reviews
  • 103,377 Students
  • 20 Courses

I am a neuroscientist (brain scientist) and associate professor at the Radboud University in the Netherlands. I have an active research lab that has been funded by the US, German, and Dutch governments, European Union, hospitals, and private organizations.

But you're here because of my teaching, so let me tell you about that: 

I have 20 years of experience teaching programming, data analysis, signal processing, statistics, linear algebra, and experiment design. I've taught undergraduate students, PhD candidates, postdoctoral researchers, and full professors. I teach in "traditional" university courses, special week-long intensive courses, and Nobel prize-winning research labs. I have >80 hours of online lectures on neuroscience data analysis that you can find on my website and youtube channel. And I've written several technical books about these topics with a few more on the way.

I'm not trying to show off -- I'm trying to convince you that you've come to the right place to maximize your learning from an instructor who has spent two decades refining and perfecting his teaching style.

Over 94,000 students have watched over 6,500,000 minutes of my courses (that's over 12 years of continuous learning). Come find out why!

I have several free courses that you can enroll in. Try them out! You got nothing to lose ;)

                                                  -------------------------

By popular request, here are suggested course progressions for various educational goals:

MATLAB programming: MATLAB onramp; Master MATLAB; Image Processing

Python programming: Master Python programming by solving scientific projects; Master Math by Coding in Python

Applied linear algebra: Complete Linear Algebra; Dimension Reduction

Signal processing: Understand the Fourier Transform; Generate and visualize data; Signal Processing; Neural signal processing

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