While [Vinod] says he’s not an expert in this sort of thing, we really like his audio spectrum analyzer build from a simple microcontroller and LCD display. It is a well-studied fact that every audio ...

The circuit has been designed to create a spectrum analyzer that will provide an analysis of a sound to determine at various frequencies, the volume of sounds that make up the overall sound spectrum.

The eighteen IN-13 Nixie tubes are fed from a 125V DC supply. The solid brass framework is made from 37 individually machined parts, and the base is solid mahogany. The eighteen IN-13 Nixie tubes are ...

Only LED displays that are made to display text. <BR><BR>An all-hardware audio spectrum analyzer is a pretty simple beast... particularly if you don't need it fancy, calibrated, useful for real ...