User manual SERATO PARAMETRIC EQ

[. . . ] It combines the pristine sound quality and excellent features of Rane's top-of-the-line hardware, the PEQ 55, with the ease of a functional graphical user interface. The Parametric EQ features 10 fully adjustable band filters that can be individually bypassed and set to bell filter, low- or high-shelf filtering. It also has 3 simple overall tone controls and a low- and high-cut filter pair to help shape your sound without sacrificing a filter band. The overall gain and phase change are graphically displayed on a color coded curve so you can see at a glance the overall effect your settings are having on the audio. [. . . ] For this example only band filter 7 is enabled, the high-cut is set to around 10 kHz and the low-cut to around 12 Hz. 0° L Trailin g ding ea 180° The gain vs. frequency grid also displays a shaded curve which represents the soloed gain change your selected filter is causing. This may not necessarily line up with the graphical curve, especially if the point is sitting over another point or is working against another adjustment. For an example of this see the screenshot on the previous page. 6 The Parametric EQ Interface Using Filter Selections The Parametric EQ allows you to alter the characteristics of several filters at once by using a selection of filter bands. Filters in the selection are displayed with green filled icons (filters 5 and 8 are part of the selection in the screenshot above). A filter can be added to a selection by command-clicking (control-clicking in Windows) its icon in the band filters' panel. Note: Holding the command key (control in Windows) and dragging a box in the band filters' panel toggles the selection membership of the enclosed enabled filters. If you move one of the filter bands in the selection, all of the bands in the selection will move. Filter selection operations only apply to movements of the filter icons. Adjustments of the frequency, gain or bandwidth slider will only affect the current filter, regardless of whether it is a member of the filter selection or not. Filter selections are really useful for situations where you may have several musical boosts in an EQ, but a couple of deep dips or other surgical type cuts that you don't want to move. The example above is from a session where the kick drum had an annoying resonance at around 130 Hz but needed reinforcing down around 50 Hz and up around 3 kHz. By making a deep cut with very low bandwidth at 130 Hz we are able to remove the resonance. The boosts are less surgical and more for musical effect; they have a broader bandwidth for a softer effect on the sound. By linking these 2 musical boosts we can then sweep them around to best fit them `in tune' with the rest of the track, without changing the other filters. Note: Holding the shift key when clicking on a filter in the selection will limit movements of the filters in the selection to either vertical movements only (gain changes) or horizontal movements only (frequency changes). Note: Holding the shift and command keys (shift and control keys in Windows) when clicking on a filter in the selection and moving the mouse horizontally will adjust the bandwidth of all filters in the selection. 7 The Parametric EQ Interface Band Filter Options The band filter options let you enable or disable, and change the type of each of the 10 bands. Each band also has a corresponding overload LED, and an icon representing the filter type, similar to the ones in the band filters' panel. A filter's Type is selected by the short slider at the top of the panel. The type can be set to high-shelf (with the slider at the top), bell filter (slider in the middle), or low-shelf (with the slider at the bottom). When changing the type, the Parametric EQ produces a smooth transition from one type of filter to another so that there is no sudden change in the audio. Below the type sliders are the 10 Filter Icons, these mirror the icons in the band filters' panel. [. . . ] Toggles the selection membership of an enabled filter. Toggles the selection membership of all enclosed enabled filters. If the filter is a member of the selection then the bandwidth adjustments will be applied to all filters in the selection. Limits movements of a filter to either vertical movements only (gain changes) or horizontal movements only (frequency changes). If the filter is a member of the selection then the adjustments will be applied to all filters in the selection. [. . . ]