# GVerb

amp: | 1 | mix: | 0.4 | pre_amp: | 1 | spread: | 0.5
damp: | 0.5 | pre_damp: | 0.5 | dry: | 1 | room: | 10
release: | 3 | ref_level: | 0.7 | tail_level: | 0.5

``

    with_fx :gverb do
      play 50
    end

Make the incoming signal sound more spacious or distant as if it were played in a large room or cave. Similar to reverb but with a more spacious feel.

Introduced in v2.9

## Options

amp: | The amplitude of the sound. Typically a value between 0 and 1. Higher amplitudes may be used, but won’t make the sound louder, they will just reduce the quality of all the sounds currently being played (due to compression.) Default: 1 Must be zero or greater May be changed whilst playing Has slide options to shape changes
mix: | The amount (percentage) of FX present in the resulting sound represented as a value between 0 and 1. For example, a mix of 0 means that only the original sound is heard, a mix of 1 means that only the FX is heard (typically the default) and a mix of 0.5 means that half the original and half of the FX is heard. Default: 0.4 Must be a value between 0 and 1 inclusively May be changed whilst playing Has slide options to shape changes
pre_amp: | Amplification applied to the input signal immediately before it is passed to the FX. Default: 1 Must be zero or greater May be changed whilst playing Has slide options to shape changes
spread: | Stereo spread. Amount of stereo spread the reverb has over the left and right channels. A value of 0 means no spread at all - left and right stereo values of the incoming signal are preserved. A value of 1 means full spread - the left and right channels are fully mixed within the reverb - bleeding into each other. Default: 0.5 Must be a value between 0 and 1 inclusively May be changed whilst playing Has slide options to shape changes
damp: | High frequency rolloff. 0 is no damping (the reverb will ring out more) and 1 dampens the reverb signal completely Default: 0.5 Must be a value between 0 and 1 inclusively May be changed whilst playing Has slide options to shape changes
pre_damp: | High frequency rolloff of input signal. 0 is no damping (the reverb will ring out more) and 1 dampens the reverb signal completely Default: 0.5 Must be a value between 0 and 1 inclusively May be changed whilst playing Has slide options to shape changes
dry: | Amount of original dry signal present in the effect. This is distinct from mix. Default: 1 Must be a value greater than or equal to 0 May be changed whilst playing Has slide options to shape changes
room: | The room size in squared metres Default: 10 Must be a value greater than or equal to 0 May be changed whilst playing
release: | Time for reverberation to complete in seconds Default: 3 Must be a value greater than 0 May be changed whilst playing
ref_level: | Reflection level Default: 0.7 Must be a value greater than or equal to 0 May be changed whilst playing
tail_level: | Tail level amount Default: 0.5 Must be a value greater than or equal to 0 May be changed whilst playing

## Slide Options

Any parameter that is slidable has three additional options named _slide, _slide_curve, and _slide_shape. For example, 'amp' is slidable, so you can also set amp_slide, amp_slide_curve, and amp_slide_shape with the following effects:

_slide: | Amount of time (in beats) for the parameter value to change. A long parameter_slide value means that the parameter takes a long time to slide from the previous value to the new value. A parameter_slide of 0 means that the parameter instantly changes to the new value. Default: 0
_slide_shape: | Shape of curve. 0: step, 1: linear, 3: sine, 4: welch, 5: custom (use *_slide_curve: opt e.g. amp_slide_curve:), 6: squared, 7: cubed. Default: 5
_slide_curve: | Shape of the slide curve (only honoured if slide shape is 5). 0 means linear and positive and negative numbers curve the segment up and down respectively. Default: 0