This system uses a 4-microphone array connected to a STM32 microcontroller to locate sounds of a specific frequency or that match a prerecorded sound in an environment. The device is controllable by an Android phone via USB serial, which increases portability by having the GUI disconnectable from the device. Because the communications protocol is serial based, one could even create their own GUI that would seamlessly interface with the microcontroller. The device has many use cases, including locating bird song by their frequencies or locating broken parts in an engine. It can also be used as a hearing aid for those who are unable to locate sounds effectively. Currently, the device is able to locate one sound, but the sound location algorithms and microphone architecture could be expanded to track multiple sound sources. Additional sensors could be included to enhance its location ability for specific use cases, such as a magnetometer to navigate in an unfamiliar area by both sound and absolute direction.