https://github.com/delhatch/spectrum

Spectrum analyzer system using a 512-point FFT, in a Cyclone IV FPGA. Reads i2s audio from the codec and then does all FFT/VGA functions. Nios just reads the FFT result and draws the display bars. VGA frame buffer on-chip. VGA signals generated on-chip. See the included video files to watch it in action.

altera audio-analysis de2-115 fft fpga rtaudio spectrum-analyzer verilog vga vga-frame-buffer

Last synced: 02 Mar 2025