Struct Envelope 

pub struct Envelope {
    pub attack: Duration,
    pub decay: Duration,
    pub sustain: f64,
    pub release: Duration,
    pub shape: EnvelopeShape,
}

An attack/decay/sustain/release amplitude envelope.

Fields

attack: Duration

Time taken to rise from silence to full level.

decay: Duration

Time taken to fall from full level to the sustain level.

sustain: f64

Held level during the sustain phase, in 0.0..=1.0.

release: Duration

Time taken to fall from the sustain level back to silence.

shape: EnvelopeShape

Interpolation curve applied across the stages.

Implementations

impl Envelope

pub fn new( attack: Duration, decay: Duration, sustain: f64, release: Duration, shape: EnvelopeShape, ) -> Result<Self, SoundCoreError>

Builds an envelope, returning SoundCoreError::InvalidSustain when sustain falls outside 0.0..=1.0.

pub fn sample_level(&self, t: Duration, total: Duration) -> f64

Returns the envelope level in 0.0..=1.0 at elapsed time t for a tone of length total.

Trait Implementations

impl Clone for Envelope

fn clone(&self) -> Envelope

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Envelope

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

Formats the value using the given formatter.

impl PartialEq for Envelope

fn eq(&self, other: &Envelope) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Envelope