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absorptions
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Latest posts
Last updated 19 days ago
Passing planes and other whoosh sounds
20 days ago
I always assumed that the recognisable 'whoosh' sound a plane makes when...
Ultrasonic investigations in shopping centres
11 months ago
I can't remember how I first came across these near-ultrasonic 'beacons' ubiquitous...
Using HDMI radio interference for high-speed data transfer
about 2 years ago
This story, too, begins with noise. I was browsing the radio waves...
Spiral spectrograms and intonation illustrations
over 3 years ago
I've been experimenting with methods for visualising harmony, intonation (tuning), and overtones...
Speech to birdsong conversion
about 4 years ago
I had a dream one night where a blackbird was talking in...
Plotting patterns in music with a fantasy record player
over 4 years ago
Back in April I bought a vinyl record that had a weird...
Capturing PAL video with an SDR (and a few dead-ends)
over 5 years ago
I play 1980s games, mostly Super Mario Bros., on the Nintendo NES...
Beeps and melodies in two-way radio
about 6 years ago
Lately my listening activities have focused on two-way FM radio. I'm interested...
Animated line drawings with OpenCV
over 7 years ago
OpenCV is a pretty versatile C++ computer vision library. Because I use...
In pursuit of Otama's tone
over 7 years ago
It would be fun to use the Otamatone in a musical piece...
Descrambling split-band voice inversion with deinvert
over 7 years ago
Voice inversion is a primitive method of rendering speech unintelligible to prevent...
Gramophone audio from photograph, revisited
almost 8 years ago
"I am the atomic powered robot. Please give my best wishes to...