Hollow

note:	52	amp:	1	pan:	0	attack:	0
decay:	0	sustain:	0	release:	1	attack_level:	1
decay_level:	sustain_level	sustain_level:	1	env_curve:	2	cutoff:	90
res:	0.99	noise:	1	norm:	0

use_synth :hollow

A hollow breathy sound constructed from random noise

Introduced in v2.4

Options

note:	Note to play. Either a MIDI number or a symbol representing a note. For example: `30`, `52`, `:C`, `:C2`, `:Eb4`, or `:Ds3` Default: 52 Must be zero or greater May be changed whilst playing Has slide options to shape changes
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
pan:	Position of sound in stereo. With headphones on, this means how much of the sound is in the left ear, and how much is in the right ear. With a value of -1, the sound is completely in the left ear, a value of 0 puts the sound equally in both ears and a value of 1 puts the sound in the right ear. Values in between -1 and 1 move the sound accordingly. Default: 0 Must be a value between -1 and 1 inclusively May be changed whilst playing Has slide options to shape changes
attack:	Amount of time (in beats) for sound to reach full amplitude (attack_level). A short attack (i.e. 0.01) makes the initial part of the sound very percussive like a sharp tap. A longer attack (i.e 1) fades the sound in gently. Full length of sound is attack + decay + sustain + release. Default: 0 Must be zero or greater Can not be changed once set Scaled with current BPM value
decay:	Amount of time (in beats) for the sound to move from full amplitude (attack_level) to the sustain amplitude (sustain_level). Default: 0 Must be zero or greater Can not be changed once set Scaled with current BPM value
sustain:	Amount of time (in beats) for sound to remain at sustain level amplitude. Longer sustain values result in longer sounds. Full length of sound is attack + decay + sustain + release. Default: 0 Must be zero or greater Can not be changed once set Scaled with current BPM value
release:	Amount of time (in beats) for sound to move from sustain level amplitude to silent. A short release (i.e. 0.01) makes the final part of the sound very percussive (potentially resulting in a click). A longer release (i.e 1) fades the sound out gently. Full length of sound is attack + decay + sustain + release. Default: 1 Must be zero or greater Can not be changed once set Scaled with current BPM value
attack_level:	Amplitude level reached after attack phase and immediately before decay phase Default: 1 Must be zero or greater Can not be changed once set
decay_level:	Amplitude level reached after decay phase and immediately before sustain phase. Defaults to sustain_level unless explicitly set Default: sustain_level Must be zero or greater Can not be changed once set
sustain_level:	Amplitude level reached after decay phase and immediately before release phase. Default: 1 Must be zero or greater Can not be changed once set
env_curve:	Select the shape of the curve between levels in the envelope. 1=linear, 2=exponential, 3=sine, 4=welch, 6=squared, 7=cubed Default: 2 Must be one of the following values: [1, 2, 3, 4, 6, 7] Can not be changed once set
cutoff:	MIDI note representing the highest frequencies allowed to be present in the sound. A low value like 30 makes the sound round and dull, a high value like 100 makes the sound buzzy and crispy. Default: 90 Must be zero or greater,must be a value less than 131 May be changed whilst playing Has slide options to shape changes
res:	Filter resonance as a value between 0 and 1. Only functional if a cutoff value is specified. Large amounts of resonance (a res: near 1) can create a whistling sound around the cutoff frequency. Smaller values produce less resonance. Default: 0.99 Must be zero or greater,must be a value less than 1 May be changed whilst playing Has slide options to shape changes
noise:	Noise source. Has a subtle effect on the timbre of the sound. 0=pink noise, 1=brown noise (the default), 2=white noise, 3=clip noise and 4=grey noise Default: 1 Must be one of the following values: [0, 1, 2, 3, 4] May be changed whilst playing
norm:	Normalise the audio (make quieter parts of the synth’s sound louder and louder parts quieter) - this is similar to the normaliser FX. This may emphasise any clicks caused by clipping. Default: 0 Must be one of the following values: [0, 1] May be changed whilst playing

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