Enum Modulator 

#[non_exhaustive]
pub enum Modulator {
    Slide {
        from: f32,
        to: f32,
        secs: f32,
        curve: Curve,
    },
    Lfo {
        shape: Shape,
        rate: f32,
        depth: f32,
        center: f32,
    },
    Arp {
        steps: Vec<f32>,
        rate: f32,
    },
    EnvMod {
        adsr: Adsr,
        from: f32,
        to: f32,
    },
    Rand {
        from: f32,
        to: f32,
        rate: f32,
        seed: u64,
    },
}

A time-varying parameter value. Externally tagged: { "slide": {...} }.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Slide

Glide from from to to over secs, then hold at to.

Fields

from: f32

Start value.

to: f32

End value.

secs: f32

Glide time in seconds.

curve: Curve

Interpolation curve.

Lfo

Low-frequency oscillation around center (vibrato / tremolo).

Fields

shape: Shape

Oscillator shape.

rate: f32

Oscillation rate in Hz.

depth: f32

Peak deviation from center.

center: f32

Mean value the LFO oscillates around.

Arp

Step through steps at rate steps/sec, looping (arpeggio / blip table).

Fields

steps: Vec<f32>

Sequence of values to cycle through.

rate: f32

Steps per second.

EnvMod

An ADSR envelope mapped onto a parameter range: the value rides from from (envelope = 0) to to (envelope = 1). This is the modulation behind filter envelopes (cutoff from high to low), pitch envelopes, and amplitude shaping of any param. The shape is time-based, not slide.

Fields

adsr: Adsr

Envelope shape.

from: f32

Parameter value when the envelope is at 0.

to: f32

Parameter value when the envelope is at 1.

Rand

Smooth random walk between from and to, drifting at rate new targets per second (smoothstep-interpolated). The organic, NON-periodic motion the other modulators lack — wind gusting on a filter cutoff, fire flicker on a gain, drifting detune. Deterministic and edit-stable: the walk is seeded only from this modulator’s own fields, so it never shifts when sibling nodes change. Give two rands different seeds (or rates) to decorrelate them.

Fields

from: f32

Lower bound of the walk.

to: f32

Upper bound of the walk.

rate: f32

New random targets per second (low = slow drift, high = jittery).

seed: u64

Decorrelation seed; defaults to 0. Distinct values give independent walks for the same from/to/rate.

Trait Implementations

impl Clone for Modulator

fn clone(&self) -> Modulator

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Modulator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Modulator

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Modulator> for Value

fn from(m: Modulator) -> Self

Converts to this type from the input type.

impl JsonSchema for Modulator

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl Serialize for Modulator

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.