Struct synth_utils::adsr::Adsr

pub struct Adsr { /* private fields */ }

An ADSR envelope generator is represented here

Implementations

impl Adsr

pub fn new(sample_rate_hz: f32) -> Self

Adrs::new(sr) is a new ADSR with sample rate sr

pub fn tick(&mut self)

adsr.tick() advances the ADSR by 1 tick, must be called at the sample rate

pub fn gate_on(&mut self)

adsr.gate_on() sends a gate-on message to the ADSR, triggering an ATTACK phase if it’s not already in ATTACK

Attack phases may be re-triggered by sending a new gate-on message during any phase.

pub fn gate_off(&mut self)

adsr.gate_off() sends a gate-off message to the ADSR, triggering a RELEASE phase unless it’s already RELEASED

pub fn value(&self) -> f32

adsr.value() is the current value of the ADSR in [0.0, 1.0]

pub fn set_input(&mut self, input: Input)

adsr.set_input(i) sets the given ADSR input

Examples

// set attack time to 30 milliseconds
adsr.set_input(adsr::Input::Attack(0.03_f32.into()));

// set decay time to 100 milliseconds
adsr.set_input(adsr::Input::Decay(0.1_f32.into()));

// set sustain level to 3/4 way up
adsr.set_input(adsr::Input::Sustain(0.75_f32.into()));

// set release time to 150 milliseconds
adsr.set_input(adsr::Input::Release(0.15_f32.into()));