Music box

Here we teach our FPGA how to play sounds and music.
We start by generating a single tone. Then slowly more fun stuff like producing a police siren and play a tune.

You can listen to the sound produced by clicking on the speaker icon. For example here's the "police siren" .

The hardware

A Pluto FPGA board, a speaker and a 1KΩ resistor are used for this project.

A more formal representation looks like this:

The oscillator provides a fixed frequency to the FPGA. The FPGA divides the fixed frequency to drive an IO. The IO is connected to a speaker through a 1KΩ resistor. By changing the IO frequency, the FPGA produces different sounds.

The HDL design

The description is split into 3 parts:

• Part 1 - Simple beeps
• Part 2 - Sirens
• Part 3 - Tune

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This page was last updated on January 24 2008.