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esp32 bluetooth spectrum analyzer Thhe reslution is 112 x 32 pixels at 128 fps. It's 112 cm wide and 32 cm tall. For those poor souls who don't use metric, it's two washing machines wide and half a washing machine tall. I take 4096 samples and do overlapping fft on them with kaiser 3 windowing. Then I sum several bins to get one bar. The number of bins in a bar grows exponentially and the last bars are tens to a hundred frequancy bins summed together. Here is the link to my github. More detailed build instructions with laser cutting vector images will follow shortly. Richard Strauss Also sprach Zarathustra Download here! Creative Commons ► Attribution 3.0 Unported ► CC BY 3.0 Conducted by Philip Milman ► Funded By Ludwig ► Schlatt ►
