1
Mystery signal from a helicopter
I heard a mysterious sound in a Youtube video and started to investigate.
Oona Räisänen
A blog about signals, programming, music, and other stuff.
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2
The sound of the dialup, pictured (2012)
If you ever connected to the Internet before the 2000s, you probably remember how it sounded. But what do these sounds mean?
3
Ultrasonic investigations in shopping centres
Many public address systems emit a continuous near-ultrasonic sound that is used for system health monitoring.
4
Using HDMI radio interference for high-speed data transfer
A blog about signals, programming, music, and other stuff.
5
Trackers and bank accounts
A Finnish online bank leaked out user data by using a third-party tracker script.
6
Passing planes and other whoosh sounds
A blog about signals, programming, music, and other stuff.
7
Smoother sailing: Studying audio imperfections in Steamboat Willie
A deep dive into investigating and reducing the flutter distortion on the soundtrack of Steamboat Willie (1928).
8
Plotting patterns in music with a fantasy record player
A blog about signals, programming, music, and other stuff.
9
Speech to Birdsong Conversion
A blog about signals, programming, music, and other stuff.
10
Headerless Train Announcements
A blog about signals, programming, music, and other stuff.
11
Capturing PAL video with an SDR, and a few dead ends
A blog about signals, programming, music, and other stuff.