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Fast |
| (see Integration time) |
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Free field |
| A sound field in which there are no reflections. The best example is out-of-doors away from all buildings. |
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Frequency (f, Hz) |
| The time rate of repetition of a period phenomena, such as a sound wave. The unit of frequency is the hertz (Hz), which corresponds to one cycle per second. The frequency is the reciprocal of the period. |
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