_nixie-tube-spectrum-analyzer.jpg "Nixie Tube Spectrum Analyzer from attack video by you tube Video Screenshot Preview")
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⏲ Duration: 2 min 56 sec
✓ Published: 16-Nov-2016
✓ Published: 16-Nov-2016
Description:
16 soviet IN-9 neon bargraph indicator tubes were used in this project. They are driven by a MCU via PWM driver and high-voltage transistors. nThis device based on Teensy 3.2 running at 120MHz which does a real-time FFT (N=1024) on the audio signal as it streams in. Audio is sampled at ~44kHz by the audio shield codec. Data is visualized as 16 discrete frequency levels.nnTracklist:n1. Massive Attack feat. Elizabeth Fraser – Silent Springn2.Billie Holiday – I'm A Fool To Want Youn3.Caravan Pa
16 soviet IN-9 neon bargraph indicator tubes were used in this project. They are driven by a MCU via PWM driver and high-voltage transistors. nThis device based on Teensy 3.2 running at 120MHz which does a real-time FFT (N=1024) on the audio signal as it streams in. Audio is sampled at ~44kHz by the audio shield codec. Data is visualized as 16 discrete frequency levels.nnTracklist:n1. Massive Attack feat. Elizabeth Fraser – Silent Springn2.Billie Holiday – I'm A Fool To Want Youn3.Caravan Pa
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