In acoustics, the term "free field" refers to an environment where sound waves can propagate freely without any reflections, diffractions, or obstructions from surfaces such as walls, ceilings, or any other barriers. Essentially, a free field is an idealized open space where sound propagates in a uniform manner. Key characteristics of a free field include: 1. **No Reflections**: Sound waves travel in straight lines and do not encounter any surfaces that would reflect them.
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