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Werner Van Belle
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Werner Van Belle

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Did I mention that the new google logo is simple, even bland. Bold, yet dumb. It represents the mediocrity of a company everybody knows. The coca-cola of the drinks. Not particular good, but well known. Don't be too intelligent about memory management. Let the developer deal with that shit. Don't innovate too much. The idea is that they are your friendly companion with whom you're happy to be with. Don't mention the NSA. There is a right to be forgotten !

AAARGH.. Graggle: a toy for the masses. I want an intelligent web, not one that is 'safe for kids, politicians and copyright dogs'.
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Try 4chan
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Werner Van Belle

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So, currently back to FFT peak extraction. The algorithm I made is so general purpose (and fast) that I can basically extract all peaks with lots of fine details. The problem now is that with all that information I can no longer match a peak in 1 fourierframe with the 'corresponding' peak in the previous frame. There are three competing variables that could be matched: amplitude, phase and frequency. E.g: it might make sense to skip a couple of peaks until we at last find one that has a similar volume. But how far should this go ? What are the weights ? What does it all mean ? Why is there no LSD in the fridge ? [picks up megafoon and shouts] stay there, stay calm. Slams the door shut and dumps himself in the sofa. Whispers: never trust peak extraction to be of any value. The fuckers are out to get ya.
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How do you know that you haven't simply created an Enwitching Pitch Shifter?
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Werner Van Belle

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Wisdom of the day: Friends come and go, like the waves of the ocean, but true ones stay, like an octopus on your face.
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This year we will again be at the Chaos Communication Camp 2015 (which takes place around Berlin)

At CCC 2011, we gave a talk on how BpmDj performs its audio analysis. Two years later, at OHM 2013, we explained how the nearest neighbor detection and associated weight matrix is created. This year, we won't talk about the project anymore, but instead give you the opportunity to meet the developers.

Actually, we want you to come to us with ~100 tracks and an idea for a mix. We will then sit together and create that mix. As a reward you will receive one of our heat sensitive 'stay-tuned-stay-sharp-keep-mixing' cups.
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Getting closer to something printable. First test overexposed the filom material. 8 minutes really made that dent :) Next/tomorrow, a scientific sampling of how long UV should be applied.
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So after 102 precisely placed holes in aluminum bars, the mechanical part of the 160x96 pixel LED panel for our camp at the Chaos Communication Camp is ready.

The two bars in the middle will also be the 40 Ampere power bus (and covered up by some insulator when in use).
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Updated version of the audiosplitter. The old VCC/2 line, which I originally made with a second opamp has been replaced with a 100K resistor pair. Not the best solution because now it hums even louder. The grounds and the opamp bias have been properly decoupled this time (still hum). Some of the capacitor values have been lower in cutoff frequency (still hum). I tried placing a resistor over the input to remove the hum. That works if the resistor is ~680 Ohm. Yet in that case, if there is an input signal, it is barely amplified (no hum, no signal). Putting the entire thing in a metal box did not do a thing. So no pickup of magenetic fields (still hum). Replacing the powersupply with a batterypack resulted in >huray< no hum ! So it is most certainly a power supply problem. Hum removal is a non trivial problem. Grmpf.
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Really a witch if you pitch shift the bitch: Madonna.
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Just try it, you'll see :)
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At ‪#‎CCC2015‬ there was this absolutely brilliant DJ who thought that mixing a techno beat over the game of thrones title music was 'a good thing'. On popular demand, here is another one like that: https://www.youtube.com/watch?v=8f3LDTK4B_M Listen to it now, before it is ripped apart by two different copyright dogs.
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Dilema. An UV test to see what exposure we might need. Bottomleft to bottomright, then topleft to topright are different exposure times. Each time 20 seconds longer. Clearly the bottomrow (>2 minutes) is a no go zone. Yet what bothers me is that there is no clear cutoff between the different tiles.
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Audioshaper taking split. Euhm... Lysdectic sentences can be understand too tricky.
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Attached the schematics of the splitter I've been throwing together. The left top section creates a virtual ground (between 0 and 12V). This circuit works well; If I plug in a phone at the input, there is no hum. However, if the phone turns off its soundcard, or I remove the input, then suddenly I get the lovely 50 Hz. Any hints, tips or suggestions would be nice.
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