![]() Of course, the user must point the beam at the target and align the reflection with the receiver. The concept of a laser-based audio system was known to us previously, although we cannot cite a specific source of inspiration. Additionally, the project posed a large challenge due to the unknown characteristics of the laser reflection signal and the unexpected limitations which could appear. The acquired signal, if used for an audio application (which is the only case handled in this report), can be connected to speakers or headphones to listen, as well as to the microcontroller to display the spectrum.Īlthough we considered a diverse array of ideas for final projects, we chose this design because it has several practical uses, includes a large analog component, and is amenable to modular development. The microcontroller is used in conjunction with the hardware to display a spectral analysis of the acquired signal on an LCD. ![]() The transmission of the exploratory beam and the reception of the informational beam reflection is handled in analog hardware, which helps to filter the signal, reduce noise, and amplify it. ![]() ![]() High Level Design Optical Microphone and Spectrum Analysis
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