EQ, filters and utility

These are modules you can add inside a Grid patch. Open Search modules, enter the browser name shown under a device below, add it, then select it to see its full controls in the inspector. Wire the left and right audio inputs and outputs into your patch. Adding a module alone does not put it into the sound path. A card shows only its first three controls. Widen the window to at least 760 pixels to use the full inspector.

These tables use the Grid inspector’s exact labels, including short labels such as out_db. A switch is a numeric control: 0 is off and 1 is on. Unless a row says otherwise, a range is continuous. Values such as mix use 0–1: 0 is dry, 1 is wet. Width 1 preserves normal stereo; 0 makes the processed part mono.

Motion Filter uses its own bpm for tempo divisions.

Channel Utility#

Grid browser: channel-utility.

Channel Utility adjusts gain, balance, width and channel polarity. pan is balance: −1 favours the left, 0 is centre and 1 favours the right. width reaches 2 for extra width. bass_mono_hz keeps the low part centred while the high part follows Width; set it to 0 to turn that split off. mono overrides Width. swap exchanges left and right; invert_l and invert_r flip their polarity. dc_filter removes a constant signal offset. gain_db at −70 silences the signal, as does mute.

Tone Trio#

Grid browser: tone-trio.

Use Tone Trio to change bass, midrange and treble without managing individual bands. low_xover_hz and high_xover_hz set the boundaries; the mid bell sits between them. Each kill control removes that frequency region. A band's gain at its −24 dB minimum also activates its kill behaviour. out_db adjusts the overall processed level.

Five-Band EQ#

Grid browser: five-band-eq.

Five-Band EQ has five independently adjustable bands. Bands 2–4 are bells. Band 1 can be a low shelf or a low cut; band 5 can be a high shelf or a high cut. A cut's 12 or 24 choice is its steepness in dB per octave. Its gain setting does not turn a cut into a boost. Larger Q makes a bell narrower. ms_mode processes the complete stereo signal, its centre (mid) or its left/right difference (side). Each band's on control bypasses that band.

Spectrum EQ#

Grid browser: spectrum-eq.

Spectrum EQ has twelve independently adjustable band slots. Use mode with the band's channel choice: left-right lets left and right bands affect that side; mid-side lets mid and side bands affect that component. In stereo, all bands are linked. A channel choice that does not match the mode also acts on both sides.

scale multiplies band gains, while adaptive_q changes bell width with the gain setting. oversample selects 1x or 2x quality. If several active bands have Solo on, the first of them is the one auditioned. The controls beginning an_ are display settings for the separate effect-card editor; they do not create an analyser view in a Grid patch.

Each of the twelve bands uses the same seven controls. Replace N with its band number: for example, b4_freq_hz changes band 4.

Band defaults differ as follows. All gains begin at 0 dB; all channels begin at stereo; Solo begins off.

Global controls:

Filter#

Grid browser: fx-filter.

Filter offers low-pass, high-pass, band-pass, notch, peak, all-pass, two combs, a vowel filter and a DJ sweep. Use type to choose the shape and circuit to choose its character. slope sets 12, 24 or 48 dB per octave where that filter shape supports a slope. res emphasises the cutoff; drive_db raises the signal entering the filter. morph moves the vowel or DJ shape. key_track makes the cutoff follow pitch detected from the incoming sound. gain_db shapes the peak/notch response; out_db trims the result.

Motion Filter#

Grid browser: motion-filter.

Motion Filter combines the same filter shapes and circuit choices with a repeating LFO and an envelope follower. Start with lfo_amt above zero to hear the repeating sweep, or env_amt above or below zero to make the filter rise or fall with the sound. In phase, left and right share a rate with a phase offset; spin lets the right side move at a different rate. lfo_quant_steps makes the sweep stepped.

The envelope's Attack, Release and Hold shape how it follows the sound. sc_on enables a connected sc input as the envelope source; sc_mix blends it with the main input and sc_gain_db adjusts the detector level. sc_hp_hz filters that detector. clip softens the filtered signal's peaks.

Spectrum Analyser#

Grid browser: spectrum-analyser.

This Grid entry passes the stereo sound through unchanged. Its view output carries the channel selected by channel: left, right, mid or side; lr uses the mid signal. You can connect that output to another analysis module in your patch.

The generic Grid inspector does not display this device's dedicated spectrum, spectrogram, scope or stereo screen. Apart from channel, the controls below are settings for that separate display and do not change the audio or add a chart inside Grid.

Pitch Tuner#

Grid browser: pitch-tuner.

This Grid entry passes stereo sound through unchanged. Its parameters describe the dedicated tuning display, which does not appear in the generic Grid inspector. Changing Reference, Range or View here does not tune your sound or show a needle. For sound transposition, use Pitch Shifter.

For the normal track effect cards and chain controls, see Effects. For shared effect channels, see The mixer.