Optical microphone and spectrum analyzer Using Atmega1284

We implemented an optical microphone which converts distant vibrations, including sound, to an audio signal. Measuring the reflection of a laser beam from windows or glass, it possible to hear sounds near the target. The system also includes frequency spectrum analysis with a real-time display and user-configurable ranges, and it also has an output for […]

Optical microphone and spectrum analyzer Using Atmega1284 Read More »