absorptions
windytan.com

a blog about sound & signals by windytan [oona räisänen]

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Ultrasonic investigations in shopping centres

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Smoother sailing: Studying audio imperfections in Steamboat Willie

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Using HDMI EMI for fast wireless data transfer

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Spiral spectrograms and intonation illustrations

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Speech to birdsong conversion

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Plotting patterns in music with a fantasy record player

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Capturing PAL video with an SDR (and a few dead-ends)

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Beeps and melodies in two-way radio

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Animated line drawings with OpenCV

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In pursuit of Otama's tone

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Descrambling split-band voice inversion with deinvert

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Gramophone audio from photograph, revisited

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Virtual music box

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CTCSS fingerprinting: a method for transmitter identification

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Redsea 0.7, a lightweight RDS decoder

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Pea whistle steganography

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The microphone bioamplifier

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Case study: low-frequency tinnitus with distortion

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Trackers leaking bank account data

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