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#fft

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Hallo #Düsseldorf! Im #FFT (Forum Freies Theater) gibt es noch bis morgen

ON/LIVE 2025
Free, open, always – Digitalisierung für alle?

Es geht um ein zentrales Versprechen der Digitalisierung: mehr Zugang für alle, jederzeit und überall.

Heute abend bin ich auch dort, zum Thema #DigitaleTeilhabe.

fft-duesseldorf.de/reihen-fest

www.fft-duesseldorf.deON/LIVE 2025 | FFT DüsseldorfON/LIVE ist die Digitalwerkstatt des FFT. Zwischen Theater, Games, Bildung und Gesellschaft erforschen wir hier aktuelle Formen der Zusammenkunft. In der Ausgabe 2025 geht es um ein zentrales Versprec

The Fourier Transform is a mathematical operation that transforms a function of time (or space) into a function of frequency. It decomposes a complex signal into its constituent sinusoidal components, each with a specific frequency, amplitude, and phase. This is particularly useful in many fields, such as signal processing, physics, and engineering, because it allows for analysing the frequency characteristics of signals. The Fourier Transform provides a bridge between the time and frequency domains, enabling the analysis and manipulation of signals in more intuitive and computationally efficient ways. The result of applying a Fourier Transform is often represented as a spectrum, showing how much of each frequency is present in the original signal.

\[\Large\boxed{\boxed{\widehat{f}(\xi) = \int_{-\infty}^{\infty} f(x)\ e^{-i 2\pi \xi x}\,\mathrm dx, \quad \forall\xi \in \mathbb{R}.}}\]

Inverse Fourier Transform:
\[\Large\boxed{\boxed{ f(x) = \int_{-\infty}^{\infty} \widehat f(\xi)\ e^{i 2 \pi \xi x}\,\mathrm d\xi,\quad \forall x \in \mathbb R.}}\]

The equation allows us to listen to mp3s today. Digital Music Couldn’t Exist Without the Fourier Transform: bit.ly/22kbNfi

Gizmodo · Digital Music Couldn't Exist Without the Fourier TransformThis is the Fourier Transform. You can thank it for providing the music you stream every day, squeezing down the images you see on the Internet into tiny

#lispyGopherClimate archives.anonradio.net/2025010
#climateCrisis #haiku by @kentpitman !

Join the #party live in #lambdaMOO as always!

#lisp
The #html is better than #python wired.com article everyone's sharing didn't go far enough!

#dsp
I promised @shinmera that she could detect speech chirps using convolution
#pleaseSendHelp

My #series #fft exploration (works for n=3 !) (Towards #ELS2025 !)

#jamuary #music @flockofnazguls vs @limewire@mastodon.social !

#unix_surrealism @prahou

@kentpitman @rwxrwxrwx
could I get you two's (et al.'s) opinions on my conference paper idea for #ELS2025:
codeberg.org/tfw/cl-series-fft

I eventually scrapped together a 3 element Winograd #FFT that was compatible with Waters' Series 1400 line expansion. This year's theme is "going beyond macros" and Series is kinda beyond other macros.

I did it by hand to figure things out, but later I could cover/follow Sidney Burrus' PFA program-generation book, but for #lisp, with Series (instead of Fortran).

Codeberg.orgcl-series-fftBurrus style FFTs with Waters' Series macro package in lisp.
Continued thread

@northernlights @SDF @kentpitman @mdhughes @Contrapunctus
Join as always:
telnet lambda.moo.mud.org 8888
co guest
@join screwtape
Currently me'n Slak hanging out in paradise sushi.

I ran out of characters, but I also want to talk a lot about my experiences implementing a pipelined Winograd #fft using rooms and $things in my own #lispmoo2 codeberg.org/tfw/lispmoo2 and my hopes, dreams, secret plans and resolutions for the new year. Dynamic spatial inheritance plus currying and script-descriptio

Codeberg.orglispmoo2I had a name collision some time previously. This is the jam one, a MOO server built on moonclimb.

FluidDyn's lead @PierreAugier stepped in as a maintainer for the widely used #pyFFTW package to fix several things such as support for Python 3.12, Cython 3, Numpy 2.0 and broken CI. In his own words:

"On the one hand, it is nice to be able to help the community... On the other hand, this is a real long term responsibility which won’t be rewarded... this is not particular to me or this project pyFFTW. The open-source ecosystems depend on ... volunteers "

augierpi.gricad-pages.univ-gre

Pierre Augier's website · Work on pyFFTW leading to new version 0.14.0We need pyFFTW in a good shape so I invest some time in this project.

#genuary31 - "Generative Audio"

The final day of Genuary is "Generative Audio". Instead of trying to generate an audio clip, I used an audio clip to generate an image. Many different clips within a recording of Beethoven's Pathétique Sonata were passed through an FFT with smoothing and coloring applied.

I've archived all of my Genuary posts on my website: codeismycanvas.art/posts/genua