An audio visualizer implemented on a Zedboard FPGA, that takes in an audio signal, does a DFT over it and outputs vertical moving bars on a monitor driven by a VGA module. This project was initially made for a Zedboard FPGA, for a semster project in electronics, but most design sources can be used on other boards without modifications.
For audio and interfacing with the ADAU1761 on the Zedboard, this project uses zedboard_audio by ems-kl
For the VGA video interface this project makes use of VHDL-VGA-MODULE written by r0tary, one of the contributors of this project.
The DFT block is taken from the IP catalog in Vivado.
Audio_Visualizer contains the main Vivado folder for this project.
Below is the design file hierarchy in Vivado.
+- Design Sources/
| -- Audio Visualizer
| -- audio_top.vhd
| -- i_clocking.vhd : Generate 48 MHz clock from the 100MHz internal clock
| -- adau1761_izedboard.vhd : Audio Interface for the Zedboard
| -- DFT_top.vhd
| -- DFT.xci : DFT ip core
| -- magnitude_calculator.vhd : DFT Magnitude calculator
| -- counter.vhd : Counter
| -- clk_div.vhd : Clock divider, from 100MHz to 100kHz
| -- Video_Top.vhd : Top File
| -- clock_div.vhd : Clock divider, from 100MHz to 25MHz
| -- VGA_timing.vhd : Timing genration
| -- pattern_genrator.vhd : Output image generation
| -- RAM_mag.vhd : Has RAM array for keeping magnitude values
+- Simulation Sources
| -- VGA_Module_tb.vhd : Main simulation/testbench file, tests above 3 entitys
+- Constraints
| -- Zedbaord_master.xdc : Constraints file for the Zedboard
NOTE: There are more components under "adau1761_izedboard.vhd" which include things like i2s interfacing. There also is a sinewave generator in the vivado project that was used for simulation purposes for DFT testing
| Contributor | Main Contribution to the project |
|---|---|
| r0tary | Implemented the video interface and RAM design |
| Azerio102 | Implemented the DFT block into the project and its connection to the RAM |
| szymons1009 | Implemented and connected the audio interface |
| InclinedFR | Worked on a volume incremneter for the audio out |