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# About EQ Filter Effects

EQ filter settings are used to precisely manipulate the audio frequency content. For example, use EQ filters to improve noisy audio tracks or to enhance vocal tracks. EQ Filters are accessible either from the EQ Desk to adjust input strips, or from the Audio Soft Effects menu to adjust individual audio segments. There are six available EQ filters: High Shelf, High Cut, Mid Presence, Mid Notch, Low Shelf, and Low Cut. Only the High Shelf, Mid Presence, Mid Notch, and Low Shelf filters area available on the EQ Desk.

Many filters use a quality factor, or “Q”, which affects the width of the bell curve applied on the EQ graph. A curve with a high Q covers a narrower bandwidth and means that only a few frequencies are affected. A curve with a low Q covers a wider bandwidth, affecting many frequencies.

Unless a particular effect is desired, EQ settings should be used sparingly. Almost all filters induce phase shift on the outgoing audio signal, which can cause a problem in mixing. The higher the value of Q, the more this phase shifting occurs.

#### Topics in this section

- High Shelf Filter
- High Cut Filter
- Mid Presence Filter
- Mid Notch Filter
- Low Shelf Filter
- Low Cut Filter