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Using Parametric EQ

Parametric Equalization is a common audio sweetening technique that allows you to emphasize some frequencies of audio and de-emphasize others. As on many traditional mixing boards, you can choose up to three bandwidths to adjust. Ordinarily, the bandwidths correspond to low, midrange, and high frequency bandwidths, though you can set the center frequency and range of each bandwidth.

To use the Parametric EQ effect:

Select a layer containing audio (Figure 15.34).

Figure 15.34. Select a layer containing audio.

Select Effects > Audio > Parametric EQ (Figure 15.35).

Figure 15.35. Select Effects > Audio > Parametric EQ.

The Parametric EQ effect appears selected in the Effect Controls window.

In the Effect Controls window, check up to three bandwidths (Figure 15.36):

Figure 15.36. Check up to three band widths to enable and adjust.

Band 1 Enabled

Band 2 Enabled

Band 3 Enabled

In the Frequency Response graph, Band 1 appears as a red curve, Band 2 is green, and Band 3 is blue.

Define each bandwidth you enabled by specifying the following options:

Frequency sets the frequency (in Hertz) that acts as the center or peak of the bandwidth (Figure 15.37).

Figure 15.37. For each bandwidth you enable, set the Frequency…

Bandwidth sets the range of frequencies you want to adjust (Figure 15.38).

Figure 15.38. …and the Bandwidth…

Adjust the amplitude of the bandwidth you specified by setting a value for Boost/Cut (Figure 15.39).

Figure 15.39. …then adjust the Boost/Cut to either emphasize or de-emphasize the selected bandwidth.

Positive values emphasize, or boost, the audio in the bandwidth. Negative values cut, or de-emphasize, the audio in the bandwidth. The corresponding curve in the Frequency Response graph reflects the changes.



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