Laser microphone guide.

The development of laser microphones lead to several models appearing on the market, each using a slightly different technology. The most common microphone using lasers is the one that sends the beam at an angle on a glass surface. A light detector is placed at the resulting refraction angle, which has the capacity to record and interpret the incoming laser signals.

The microphone works by the following principle: sound vibrations, represented by differences in air pressure, cause movement in the glass surface, which, in turn, deflects the laser to the receiver. This type of laser microphone has the advantage of accurately detecting sound waves, even low intensity ones. Direct reflection laser devices have a zero angle reflection and the light is detected when it bounces back. The technological process is similar to the one descried above, with the difference that the emitted and reflected beam are aimed at the same location.

Advanced microphone technologies using amplified light

The advancements in sound recording and emitting are often concretized in the modern laser microphones. Technologies such as laser interferometry help manufacturers increase the benefits of this technology. The competition between laser technology and classical electret microphones is not fierce yet, with the latter being far more popular and widespread.

Laser microphones are still expensive and somewhat fragile, so the market is not yet ready to make them popular yet. However, as laser technology progresses, we might see an abundance of such models on the electronic store shelves in a few years from now.

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