However, they lack one feature of the MP3 players and streamers of old: visualizations! [mircemk] is a fan of those, and has built a hardware spectrum analyzer that pumps with the music.

14 thoughts on “ Teensy Spectrum Analyzer Has 170 Channels ” The Electronic Engineer says: ... Of course ‘old time’ spectrum analysers were a set of analog filters, ...

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Spectrum analyzers, on the other hand, can cover frequency ranges up to 85 GHz and beyond, enabling them to address most applications of wireless, cellular or satellite communications, ...

Spectrum analyzers measure power using a resolution-bandwidth (RBW) filter, and in most spectrum analyzers, the filter used to measure power is more than 1 Hz wide.