“How to make an audio FFT spectrum analyzer on a 256x50 pixel VFD display.
An audio spectrum analyzer is a device that visualizes the frequency content of an audio signal. It represents the distribution of frequencies in a graphical form, typically displaying amplitude or power on the y-axis and frequency on the x-axis. This tool is commonly used in audio engineering, music production, and sound analysis for various purposes.
This time I will describe how to make an audio FFT spectrum analyzer on a 256x50 pixel VFD display.
The device is very simple to build and has only a few components:
- Arduino nano microcontroller
- GP1287 VFD display with resolution of 256x50 pixels
- stereo potentiometer
- two capacitors
- two resistors
- and Button”