CHAPTER 6

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Reflection

Imagine a sound source in a free field, or an approximation of one, such as an open meadow. Sound emanates from the source radially in all directions. Direct sound from the source moves past you and never returns. Now consider the same source in a room. Direct sound moves past, but when it strikes room boundaries, it reflects from the boundaries. Thus a sound moves past you once in a direct path, and many additional times as many reflected paths, until it dies out. Sound comprising many reflections sounds dramatically different than sound in a free field. The reflections convey significant information about the room’s size, ...

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