Struct Adsr 

pub struct Adsr {
    pub attack: f32,
    pub decay: f32,
    pub sustain: f32,
    pub release: f32,
}

ADSR envelope generator. Produces a gain value in [0, 1] from a note timeline.

Fields

attack: f32

decay: f32

sustain: f32

release: f32

Implementations

impl Adsr

pub fn new(attack: f32, decay: f32, sustain: f32, release: f32) -> Self

pub fn pluck() -> Self

Pad: quick attack, short decay, low sustain, short release.

pub fn pad() -> Self

Slow pad: long attack/release.

pub fn hit() -> Self

Punchy hit: instant attack, fast decay, no sustain.

pub fn drone() -> Self

Drone: instant attack, long sustain.

pub fn level(&self, age: f32, note_off: Option<f32>) -> f32

Evaluate the envelope at age seconds since note-on. note_off is the age at which note-off occurred (None = still held).

pub fn is_silent(&self, age: f32, note_off: Option<f32>) -> bool

True if the note has fully released and gain is essentially zero.

Trait Implementations

impl Clone for Adsr

fn clone(&self) -> Adsr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Adsr

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

Formats the value using the given formatter.