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Thread: For ur information ;-)

  1. #1
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    Default For ur information ;-)

    Not sure if I first saw this YouTube link posted on this forum or not, but I ran across it again today and thought some folk might find it insightful. I never fully grasped the details of Fourier transforms or how to use them but understood what they could do in solving frequency modification problems in electronics.

    https://www.youtube.com/watch?v=spUNpyF58BY

    ________________________________
    Everything depends on everything else

  2. #2
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    Quote Originally Posted by lasermaster1977 View Post
    Not sure if I first saw this YouTube link posted on this forum or not, but I ran across it again today and thought some folk might find it insightful. I never fully grasped the details of Fourier transforms or how to use them but understood what they could do in solving frequency modification problems in electronics.

    https://www.youtube.com/watch?v=spUNpyF58BY

    If you're curious about the application of Fourier transforms on audio files, take a look at Parametric5.

    https://www.photonlexicon.com/forums...ng-Parametric5
    Once milk has been poured over corn flakes, the clock starts ticking.

  3. #3
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    I have watched a bunch of 3b1b videos. This is a really good one.

    There is a lot of stuff here explained in a way I never saw before, but I have been near it for more than 40 years.

    I just implemented two new LaserBoy Liquid Math unary operators: differences and sums.

    The first one is a set of vertices that are just the differences from the original set, vertex-to-vertex. Another way to look at it is to imagine each vertex is offset from the origin. It's the delta. The change.

    The opposite is the sums.

    Derek Holzer posted something that made me look into this and find it in LaserBoy.

    I wish I could get a real discussion going that would lead to understanding and use of LaserBoy Liquid Math.

    There is also a vector font rendering script.

    I have so much of this working.

    I want to expand it.

    Use it and report!

    I want to talk to you!

    https://laserboy.org/mp4/

    James.
    Last edited by james; 02-12-2022 at 21:13.
    Creator of LaserBoy!
    LaserBoy is free and runs in Windows, MacOS and Linux (including Raspberry Pi!).
    Download LaserBoy!
    YouTube Tutorials
    Ask me about my LaserBoy Correction Amp Kit for sale!
    Either do or do not do. There is no undo!

  4. #4
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    Quote Originally Posted by dchammonds View Post
    If you're curious about the application of Fourier transforms on audio files, take a look at Parametric5.

    https://www.photonlexicon.com/forums...ng-Parametric5
    I appreciate that.

    My parents had a small recording studio for a time, using an old tube-type RCA, 2 channel broadcast audio console. It had basic EQ, a nice patch panel, circa late 50's. I learned to use it along with an Ampex 300 and 440 to make demo tapes for local bands. I used to salivate when seeing solid-state of the art 48 x 16, 32 x 8, etc. mixers with parametric eq. This was in like 1968. In '69 my brother (who new Fourier and Laplace transforms) helped me build an op-amp based, single channel parametric eq. With that, I felt like I was livin' in high cotton as I could choose which instrument mic to use it on.
    ________________________________
    Everything depends on everything else

  5. #5
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    Jul 2008
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    Quote Originally Posted by lasermaster1977 View Post
    I appreciate that.

    My parents had a small recording studio for a time, using an old tube-type RCA, 2 channel broadcast audio console. It had basic EQ, a nice patch panel, circa late 50's. I learned to use it along with an Ampex 300 and 440 to make demo tapes for local bands. I used to salivate when seeing solid-state of the art 48 x 16, 32 x 8, etc. mixers with parametric eq. This was in like 1968. In '69 my brother (who new Fourier and Laplace transforms) helped me build an op-amp based, single channel parametric eq. With that, I felt like I was livin' in high cotton as I could choose which instrument mic to use it on.
    Make sure you get the latest Parametric5 exe at the end of the thread so you can check out the surround effects.
    Once milk has been poured over corn flakes, the clock starts ticking.

  6. #6
    Join Date
    Sep 2014
    Location
    Colorado USA
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    Quote Originally Posted by dchammonds View Post
    If you're curious about the application of Fourier transforms on audio files, take a look at Parametric5.

    https://www.photonlexicon.com/forums...ng-Parametric5

    I got your last zip file from the link you provided, thanks.
    ________________________________
    Everything depends on everything else

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