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The Fourier Transform and its Applications

see.stanford.edu

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Re: The Fourier Transform and its Applications

#2
In case this is useful to anyone else:

There's probably an easier way to do it, but if you want to get faster playback (2x is about as fast as I can comprehend this lecturer at), this line seems to do the trick:

    document.getElementById("myElement").querySelector("video").playbackRate = 2

Re: The Fourier Transform and its Applications

#3
post #2

In case this is useful to anyone else: There's probably an easier way to do it, but if you want to get faster playback (2x is about as fast as I can comprehend this lecturer at), this line seems to do the trick: document.getElementById("myElement").querySelector("video").playbackRate = 2

Not sure if the browser playback supports it but lots of other native programs like VLC do a pitch-compensation/"time-stretching" mode that will make the faster playback easier to live with.

Re: The Fourier Transform and its Applications

#6
post #2

In case this is useful to anyone else: There's probably an easier way to do it, but if you want to get faster playback (2x is about as fast as I can comprehend this lecturer at), this line seems to do the trick: document.getElementById("myElement").querySelector("video").playbackRate = 2

If you're using Chrome, there's a plugin called video speed controller which will let you set the speed of any embedded video.

Re: The Fourier Transform and its Applications

#8
This is an exceptional course. In my CS undergrad days, some 7 years ago, when I wanted to make sense of Fourier Series and Transform, this course was my savior. The mathematics text book had a dry and unintuitive treatment of the topics and electrical engineering, physics and computer science books mostly relegated the topics to a few pages in an appendix.

I found this course and printed out the PDF of the lecture notes as I didn't have enough bandwidth for watching the videos. The lecture notes had a wealth of information about the idea of a Fourier Series expansion, it's connection to the Transform and the applications in diverse fields.

Prof. Osgood had great examples. In one such example he showed that the temperature of a ring must be a periodic function of time as the structure of the ring is periodic in space, and then went on to derive an equation for the temperature of the ring that was a Fourier Series.

It was from these notes that I learned a great deal about convolution too. The new website looks much better organized. I'd recommend every CS/EE student to at least watch the first few lectures once.

Re: The Fourier Transform and its Applications

#9
I 'took' the stanford NLP course online it was great.

Doing this one now.

Funny - I did Fourier in Comp. Eng. - but it was jammed together with so many other things, I felt overwhelmed by all of it, I did enough to do decently on the exam, but I feel a lot of it was lost on me, and I forgot much of it.

Using fourier in most computer applications is very rare!

I'm excited to have a project I need to use it for - and weirdly stocked to be watching this video.

I love it when I have a reason to learn something awesome ...

Re: The Fourier Transform and its Applications

#10
post #9

I 'took' the stanford NLP course online it was great. Doing this one now. Funny - I did Fourier in Comp. Eng. - but it was jammed together with so many other things, I felt overwhelmed by all of it, I did enough to do decently on the exam, but I feel a lot of it was lost on me, and I forgot much of it. Using fourier in most computer applications is very rare! I'm excited to have a project I need to use it for - and w…

The prof noted that it's almost all EE folks, with a few others, but didn't mention Comp Sci. Can anyone comment on why there were seemingly no Comp Sci people in this class? Wouldn't this be 'core' to Comp Sci?
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