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Oona Räisänen (windytan)
Lives in Helsinki
6,155 followers|11,146,659 views
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begin aquajogging season.
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Ever wondered what a maritime VSAT is doing under its radome?
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Davor Cihlar's profile photoWilfried Klaebe (Wonka)'s profile photogautam chekuri's profile photoMichael Kael's profile photo
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Incredible stabilization!
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Doodling in Inkscape to redesign the buffers & windowing in slowrx... among everything else
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Ken Bellows's profile photoOona Räisänen (windytan)'s profile photoWorratep Suchon (DROIDVENGERS)'s profile photoJulius Friedman's profile photo
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It's a convolution, in this case duplicated the Inkscape object, sent it to back and applied Gaussian blur.
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Running my #gtkmm app on OSX. No problems at all. But XQuartz isn't running. o_O
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Oona Räisänen (windytan)'s profile photoMarco Saavedra's profile photo
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Ola mana 
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Case study: tinnitus with distortion
A periodically appearing low-frequency tinnitus is one of my least favorite signals. A doctor's visit only resulted in a WONTFIX and the audiogram on the right, which didn't really answer any questions. Also, the sound comes with some pecularities that warr...
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Emanuele Ziglioli's profile photoRobin Laurén's profile photoDec Kelly's profile photoMatthew J. Harmon's profile photo
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I listened to a science podcast lately where they were talking about tinnitus experiments on rats. Basically they had trained rats to do something when they heard a similar sound. They showed how the rats were showing the same reaction as hearing a tinnitus even when the nerve connection to their ears were cut off. So it could be a result of the brain "amplifying" the signal when it's soft and therefore creating some sort of hum.
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Have her in circles
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Some more GUI art for an older blog post. #Inkscape  
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Antti Brax's profile photoOona Räisänen (windytan)'s profile photo
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+Antti Brax
No worries, it's non-functioning.
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I recorded a soundscape on Helsinki metro. (Tascam DR05, internal mics, low cut filter disabled). Gotta love the VFD motors <3
windytan
Traveling on Helsinki metro by windytan
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Joel Gil's profile photoOona Räisänen (windytan)'s profile photoJack Strahan (Longshiren)'s profile photoDec Kelly's profile photo
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I'll try the same in Tokyo when I go back later this year.  Again, thanks.
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Also, there's an official Absorptions fan page on the mainstream social site.
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Oona Räisänen (windytan)'s profile photoDec Kelly's profile photoPeter Barrett's profile photo
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+Dec Kelly I don't really know, or care. I have never had a FB account and see no reason to get one.
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sound card + random parts. #DIY #teinitsejasäästin
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Inspired by David Galloway's "Square Wave from the summation of odd-integer harmonic frequencies", I made a spin-off based on the same code:

http://www.khanacademy.org/computer-programming/spin-off-of-david-galloways-square-wave-from-the-summation-of-odd-integer-harmonic-frequencies/5154727290208256

This version provides an alternative solution that "completes the square" (so to speak), by alternating the phases and directions of the waves, in such a way that the projection on the other (real/imaginary) axis is also a square wave.

Thanks David Galloway for sharing your code.

Original program:

https://www.khanacademy.org/computer-programming/square-wave-from-the-summation-of-odd-integer-harmonic-frequencies/5389081424166912
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Now I finally understand!
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Have her in circles
6,155 people
Gavin Baker's profile photo
Tomi Kyoi Wareborg's profile photo
MUSILYOUS BOIS's profile photo
Eliasur Rahman's profile photo
Dave Burgess's profile photo
John Lewis's profile photo
El Artista Scarlo809     official's profile photo
Damián Silvani's profile photo
Nhatbaoduy Nguyen's profile photo
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5 communities
Basic Information
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Female
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Tagline
Signals & electronics hacker.
Introduction

A self-taught signals hacker from Helsinki, Finland. CCC and 44CON speaker. Studies computers. Fond of electronics, mysteries, codes and ciphers, and vintage tech.

Absorptions is a blog about my hobbies.

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Currently
Helsinki