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June 26 2016


February 28 2016

It's not a western guitar an therefor has three nylon strings. Additionally I'm interested in amplifying the acoustic guitar - not turning it into an electric guitar. :)

February 26 2016

Lately I have been recording songs with my guitar and vocals. I used (above average quality) dynamic microphones and the results with that setup weren't very satisfying. There are several reason for that: There is very significant cross-talk between the two microphones when recording simultaneously, it is very susceptible to background noise and the handling is cumbersome (both mics need to be well aligned to both my guitar and my mouth). Usually those problems are mitigated (except for the background noise) by recording the instrumental first and then the vocals. But since i also would like to be able to do amplified live performances there is only one solution (i can see): using an acoustic guitar pickup. Well, and since they are rather expensive, I'm a hacker and lately have started to build my own audio equipment (e.g. a dual channel mic preamp), i decided to hack my own acoustic guitar pickup.
Reposted bymetalabnickless

November 06 2015


Release: Cict and Ciff

Today i've moved useful code that i initially wrote for other projects (ColorMorseCode and PixelStencil) into two litte CLI tools. Maybe someone finds it interesting or may even have immediate use for them:

Ciff (https://github.com/kallaballa/Ciff)
Calculates the difference between two RGB colors using the CIEDE2000 color difference metric

Cict (https://github.com/kallaballa/Cict)
Translate color values (24bit RGB hex) to human readable names

October 24 2015

"Man kann mit einem Computer Kunst und Schönheit schaffen"  - Generated morse code painting: https://github.com/kallaballa/ColorMorsePainting/
Reposted bymetalabmyosotisjaschaalphabetmetafunk

July 25 2015

Play fullscreen

@metalab pixel graffiti timelapse.

by erdnuss

Reposted bywizard23alphabet
3105 6239 500
  Metafloyd pixel graffiti @metalab  
Reposted byAndimondkroetemetalabfadenbjv6m68kcliffordred667aperturemazzoisisp856

July 22 2015

3832 1163 500
Lazzzored the pixel stencils for the @metalab main room.
That's what it will look like: http://kallaballa.soup.io/post/596918792/metalab-pixelart-by-me
Reposted bylazzzormetalabmynniareox

July 21 2015

2453 13a9

@metalab pixelart :)

by me

Reposted bymetalabreoxdatacopAndischlachtorosstraycatjaschalubischlachtoros

June 08 2015


April 02 2015

5869 2544 500
my project http://github.com/kallaballa/Janosh now has a logo.
by juli_wie_august
Reposted bysilshasydnorjuliwieaugustcapybarap856

February 09 2015

ZEITMASCHINENVERTRAG zum Ausdrucken und offline unterschreiben.

English version: https://chronosurfers.org/en
Reposted fromchronosurfers chronosurfers viametalab metalab

January 28 2015


December 07 2014


December 04 2014

@kallaballa cuttet die hübschesten Schallplatten
Reposted fromSonstwer Sonstwer

September 26 2014

Again i'm trying to approximate pixel art from a picture using feature detection to refine results. but this time i'm also doing color reduction to 8 colors. and i think it looks great
Reposted bymetalab metalab
  Currently i'm trying to generate pixel art from images by approximating the original images with rectangles using simulated annealing (similar to http://alteredqualia.com/visualization/evolve/). But i'm using a more complex fitness function that involves optimization for visual features using feature detection techniques.
The upper row of the video shows the current approximation and the original image and the lower row shows a visualization of "good" features found in both pictures.
Reposted bymetalabm68k

September 20 2014

September 07 2014

Way faster and precise approximation of a sobel filter
The video shows the approximation process of a sobel edge detection filter using a genetic algorithm. The first row shows the current search result and the seconds row shows the target filter with the picture on the left, the dft in the middle and the dft in binarized form on the right.


September 04 2014

I'm using a genetic algorithm to approximate a series of convolutions which try to mimic a given effect. In this example it tries to learn a 8x8 blur effect generated with ImageMagick (convert -blur 8x8).
The upper images in the video show the current approximation and the magnitude spectrogram of its discrete fourier transform (DFT).
The lower images show the target image and its DFT.
Only results of the best candidate of each generation is shown in the video.


Reposted bypumucklcliffordnexelpollodiablo
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