This is a prototype proof-of-concept of using microphones to locate a sound source and display it’s location and waveform as ripples. This is what sound looks like; waves bouncing off surfaces like ripples in a pond. The larger version uses a grid of 22 electret mics installed into a projection screen. The frequency is visualized by the width of the ripples and I’ve shifted/scaled the visual spectrum down to the human hearing spectrum so that the frequencies have corresponding colors. A guitarist and a sax player could play in front of the screen and we could literally see what the sound waves look like as they bounce off the wall.