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IN-13 bargraph audio visualizer
Автор: jatimat1c
Загружено: 2015-10-11
Просмотров: 35933
Описание:
DIY audio spectrum analyzer with IN-13 bargraph tubes.
10 bands (31 Hz - 16 kHz)
line input/output
built-in microphone
adjustable PWM-controlled "release" time (1:40 3:00)
op-amp based circuitry
Original schematic that I made for myself during the project:
https://1drv.ms/u/s!AvJDG4IatLAxhNR46...
It's pretty hard to read (just a sketch) and doesn't have everything needed (for example you need to calculate the band-pass filter components for each frequency band, I used Q=1.5 filter which works for this 10 band display).
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