# Filter

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### Overview

**Filter** is a multi-mode morphing filter with multiple slope options and stereo control. It can handle simple filtering, but it really shines when combined with modulation to create dynamic filter movement, making it a powerful tool for sound design, mixing, and performance.

<figure><img src="/files/VjmuPOqtZZyJYRJ2JPP0" alt=""><figcaption></figcaption></figure>

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### 1. Effect Dropdown&#x20;

The **Effect Dropdown** lets you remove or swap the effect and load or save sub-presets. See [**Shared Settings**](/evoke-manual/effects-rack/shared-settings.md) for dropdown options and detailed descriptions.

### 2. Filter Order

The **Filter Order** determines how quickly frequencies are attenuated beyond the cutoff point. You can toggle between 12 dB/octave and 24 dB/octave modes:

* **12 dB/octave.** Produces a gentler roll-off for a more natural, subtle effect.
* **24 dB/octave.** Creates a steeper roll-off for tighter control, more pronounced filtering, and rounder resonance, similar to popular ladder filters.

### 3. Filter Display&#x20;

The **Filter Display** shows the current filter response and its effect on the input signal.

Click and drag the circular indicator to adjust **Cutoff** and **Resonance**, or hold **Command** (macOS) or **Ctrl** (Windows) to adjust **Morph** instead of **Resonance**. The current **Cutoff** value appears in the top-right of the display.

### 4. Filter Controls&#x20;

**Cutoff.** Sets the filter’s cutoff frequency, where attenuation begins.

**Resonance.** Sets the level of the peak at the cutoff frequency. 0% produces no peak; higher values create an intensely resonant peak.

**Morph.** Smoothly interpolates between low-pass, band-pass, high-pass, and notch filter types for expressive movement and fluid tonal shifts.

**Spread.** Offsets the cutoff between left and right channels to create super-wide filtering effects.

### 5. Mix Controls&#x20;

**In.** Sets the level of the wet signal path before processing.

**Out.** Sets the final level after processing and dry/wet mixing.

**Mix.** Blends the unprocessed (dry) and processed (wet) signals.


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