The ABCs of Frequency-Weighting

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Like other animals, humans hear different pitched sound differently. Some sounds, such as those in the range of speech or a baby crying, are easy to hear and emphasized by the ear. Other sounds, such as low-pitched rumbling or high-pitched buzzing might be more difficult to hear. In an effort to take these differences into account, acoustics professionals have developed patterns for emphasizing or de-emphasizing sounds at different pitches. In this article, we will discuss these patterns—called frequency weighting curves—and ...

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