In this 153B project, my goal is to build a sound visualizer using the discovery board. A sound visualizer is a device that takes sound source as the input and output a visual representation of the sound based on its frequency or intensity on a display. The sound visualizer is going to collect its input by using a microphone. The signal will get processed through software, and the outcome will be sent to a LED matrix display which can then visualize the sound signal. Some additional feature I might consider when there is sufficient time is to take sound input signal from my PC via the USB and visualize it with my sound visualizer.