StudioEQ

Studio EQ is a high-quality 4-band parametric stereo equalizer. All four bands can act as fully parametric peak filters. In addition, the low and high bands can act as either shelving filters (three types) or as cut filters (low-pass/high-pass).

Main Layout

Reset

Alt/Opt-click this button to reset all parameter values.

Show Input/Output Spectrum

Shows the spectrum before and after filtering.

Output

Adjusts the overall output level.

Auto Gain

If this button is activated, the gain is automatically adjusted, keeping the output level nearly constant regardless of the EQ settings.

Band Settings

Activate/Deactivate Band

Activates/Deactivates the corresponding band.

Note
  • If a band is deactivated, you can still modify its parameters.

Freq

Sets the frequency of the corresponding band. You can set the frequency either in Hz or as a note value. If you enter a note value, the frequency is automatically changed to Hz. For example, a note value of A3 sets the frequency to 440 Hz. When you enter a note value, you can also enter a cent offset. For example, enter A5 -23 or C4 +49.

Note
  • You can adjust the Freq parameter of a band in the graphical editor by -clicking the corresponding handle and moving the mouse left and right.

  • Ensure that you enter a space between the note and the cent offset. Only in this case, the cent offsets are taken into account.

Inv

Inverts the gain value of the filter. Use this button to filter out unwanted noise. When looking for the frequency to omit, it sometimes helps to boost it in the first place (set the filter to positive gain). After you have found the frequency of the noise, you can use the Inv button to cancel it out.

Q

For Peak filters, this parameter controls the width of the band. For Shelf filters, it adds a drop or a boost, depending on the gain setting of the band. For Cut filters, it adds a resonance.

Note
  • You can adjust the Q parameter of a band in the graphical editor by -clicking the corresponding handle and moving the mouse up and down. Alternatively, you can point on the handle and turn the mouse wheel.

Gain

Sets the amount of attenuation/boost for the corresponding band.

Note
  • You can adjust the Gain parameter of a band in the graphical editor by -clicking the corresponding handle and moving the mouse up and down.

  • This parameter is not available for Cut filters.

Filter type

For the low and high band, you can choose between three types of shelving filters, a peak filter (band-pass), and a cut filter (low-pass/high-pass). If Cut mode is selected, the Gain parameter is fixed.

  • Shelf I adds resonance in the opposite gain direction slightly above the set frequency.

  • Shelf II adds resonance in the gain direction at the set frequency.

  • Shelf III is a combination of Shelf I and II.