Using Average Frequencies for Common Sounds

The previous section began by defining an EQ filter as consisting of a range of frequencies and an action to perform on those frequencies, like boosting or cutting them. But how do you know which frequencies to use? Well, treat Table 10-1 as a kind of cheat sheet. It lists frequencies and the sounds that are normally found at those frequencies. Table 10-2 lists frequencies that are often reduced.

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Table 10-1 Frequency Ranges of Common Sounds

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These tables are only a starting point, not die-hard commandments. Once you create a filter using the frequencies in the tables, you’ll likely have to tweak them along with the Q to hone in on the frequencies you want to adjust. When creating EQ filters, one of your goals is to adjust the frequency and Q specifically enough to only change the frequencies you intend to change, while leaving the others as they were originally recorded.