mirror of
https://github.com/Tonejs/Tone.js
synced 2024-12-29 04:53:10 +00:00
767 lines
22 KiB
TypeScript
767 lines
22 KiB
TypeScript
import { expect } from "chai";
|
|
import { BasicTests } from "test/helper/Basic";
|
|
import { connectTo } from "test/helper/Connect";
|
|
import { Offline } from "test/helper/Offline";
|
|
import { Envelope, EnvelopeCurve } from "./Envelope";
|
|
|
|
describe("Envelope", () => {
|
|
|
|
BasicTests(Envelope);
|
|
|
|
context("Envelope", () => {
|
|
|
|
it("has an output connections", () => {
|
|
const env = new Envelope();
|
|
env.connect(connectTo());
|
|
env.dispose();
|
|
});
|
|
|
|
it("can get and set values an Objects", () => {
|
|
const env = new Envelope();
|
|
const values = {
|
|
attack: 0,
|
|
decay: 0.5,
|
|
release: "4n",
|
|
sustain: 1,
|
|
};
|
|
env.set(values);
|
|
expect(env.get()).to.contain.keys(Object.keys(values));
|
|
env.dispose();
|
|
});
|
|
|
|
it("passes no signal before being triggered", () => {
|
|
return Offline(() => {
|
|
new Envelope().toDestination();
|
|
}).then((buffer) => {
|
|
expect(buffer.isSilent()).to.equal(true);
|
|
});
|
|
});
|
|
|
|
it("passes signal once triggered", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope().toDestination();
|
|
env.triggerAttack(0.05);
|
|
}, 0.1).then((buffer) => {
|
|
expect(buffer.getTimeOfFirstSound()).to.be.closeTo(0.05, 0.001);
|
|
});
|
|
});
|
|
|
|
it("can take parameters as both an object and as arguments", () => {
|
|
const env0 = new Envelope({
|
|
attack: 0,
|
|
decay: 0.5,
|
|
sustain: 1,
|
|
});
|
|
expect(env0.attack).to.equal(0);
|
|
expect(env0.decay).to.equal(0.5);
|
|
expect(env0.sustain).to.equal(1);
|
|
env0.dispose();
|
|
const env1 = new Envelope(0.1, 0.2, 0.3);
|
|
expect(env1.attack).to.equal(0.1);
|
|
expect(env1.decay).to.equal(0.2);
|
|
expect(env1.sustain).to.equal(0.3);
|
|
env1.dispose();
|
|
});
|
|
|
|
it("can set attack to exponential or linear", () => {
|
|
const env = new Envelope(0.01, 0.01, 0.5, 0.3);
|
|
env.attackCurve = "exponential";
|
|
expect(env.attackCurve).to.equal("exponential");
|
|
env.triggerAttack();
|
|
env.dispose();
|
|
// and can be linear
|
|
const env2 = new Envelope(0.01, 0.01, 0.5, 0.3);
|
|
env2.attackCurve = "linear";
|
|
expect(env2.attackCurve).to.equal("linear");
|
|
env2.triggerAttack();
|
|
// and test a non-curve
|
|
expect(() => {
|
|
// @ts-ignore
|
|
env2.attackCurve = "other";
|
|
}).to.throw(Error);
|
|
env2.dispose();
|
|
});
|
|
|
|
it("can set decay to exponential or linear", () => {
|
|
const env = new Envelope(0.01, 0.01, 0.5, 0.3);
|
|
env.decayCurve = "exponential";
|
|
expect(env.decayCurve).to.equal("exponential");
|
|
env.triggerAttack();
|
|
env.dispose();
|
|
// and can be linear
|
|
const env2 = new Envelope(0.01, 0.01, 0.5, 0.3);
|
|
env2.decayCurve = "linear";
|
|
expect(env2.decayCurve).to.equal("linear");
|
|
env2.triggerAttack();
|
|
// and test a non-curve
|
|
expect(() => {
|
|
// @ts-ignore
|
|
env2.decayCurve = "other";
|
|
}).to.throw(Error);
|
|
env2.dispose();
|
|
});
|
|
|
|
it("can set release to exponential or linear", () => {
|
|
const env = new Envelope(0.01, 0.01, 0.5, 0.3);
|
|
env.releaseCurve = "exponential";
|
|
expect(env.releaseCurve).to.equal("exponential");
|
|
env.triggerRelease();
|
|
env.dispose();
|
|
// and can be linear
|
|
const env2 = new Envelope(0.01, 0.01, 0.5, 0.3);
|
|
env2.releaseCurve = "linear";
|
|
expect(env2.releaseCurve).to.equal("linear");
|
|
env2.triggerRelease();
|
|
// and test a non-curve
|
|
expect(() => {
|
|
// @ts-ignore
|
|
env2.releaseCurve = "other";
|
|
}).to.throw(Error);
|
|
env2.dispose();
|
|
});
|
|
|
|
it("correctly schedules an exponential attack", () => {
|
|
const e = {
|
|
attack: 0.01,
|
|
decay: 0.4,
|
|
release: 0.1,
|
|
sustain: 0.5,
|
|
};
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.attackCurve = "exponential";
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
}, 0.7).then((buffer) => {
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.within(0, 1);
|
|
}, 0, e.attack);
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.within(e.sustain - 0.001, 1);
|
|
}, e.attack, e.attack + e.decay);
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.closeTo(e.sustain, 0.01);
|
|
}, e.attack + e.decay);
|
|
});
|
|
});
|
|
|
|
it("correctly schedules a linear release", () => {
|
|
const e = {
|
|
attack: 0.01,
|
|
decay: 0.4,
|
|
release: 0.1,
|
|
sustain: 0.5,
|
|
};
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.attackCurve = "exponential";
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
}, 0.7).then((buffer) => {
|
|
buffer.forEachBetween((sample, time) => {
|
|
const target = 1 - (time - 0.2) * 10;
|
|
expect(sample).to.be.closeTo(target, 0.01);
|
|
}, 0.2, 0.2);
|
|
});
|
|
});
|
|
|
|
it("correctly schedules a linear decay", () => {
|
|
const e = {
|
|
attack: 0.1,
|
|
decay: 0.5,
|
|
release: 0.1,
|
|
sustain: 0,
|
|
};
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.decayCurve = "linear";
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
}, 0.7).then((buffer) => {
|
|
expect(buffer.getValueAtTime(0.05)).to.be.closeTo(0.5, 0.01);
|
|
expect(buffer.getValueAtTime(0.1)).to.be.closeTo(1, 0.01);
|
|
expect(buffer.getValueAtTime(0.2)).to.be.closeTo(0.8, 0.01);
|
|
expect(buffer.getValueAtTime(0.3)).to.be.closeTo(0.6, 0.01);
|
|
expect(buffer.getValueAtTime(0.4)).to.be.closeTo(0.4, 0.01);
|
|
expect(buffer.getValueAtTime(0.5)).to.be.closeTo(0.2, 0.01);
|
|
expect(buffer.getValueAtTime(0.6)).to.be.closeTo(0, 0.01);
|
|
});
|
|
});
|
|
|
|
it("correctly schedules an exponential decay", () => {
|
|
const e = {
|
|
attack: 0.1,
|
|
decay: 0.5,
|
|
release: 0.1,
|
|
sustain: 0,
|
|
};
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.decayCurve = "exponential";
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
}, 0.7).then((buffer) => {
|
|
expect(buffer.getValueAtTime(0.1)).to.be.closeTo(1, 0.01);
|
|
expect(buffer.getValueAtTime(0.2)).to.be.closeTo(0.27, 0.01);
|
|
expect(buffer.getValueAtTime(0.3)).to.be.closeTo(0.07, 0.01);
|
|
expect(buffer.getValueAtTime(0.4)).to.be.closeTo(0.02, 0.01);
|
|
expect(buffer.getValueAtTime(0.5)).to.be.closeTo(0.005, 0.01);
|
|
expect(buffer.getValueAtTime(0.6)).to.be.closeTo(0, 0.01);
|
|
});
|
|
});
|
|
|
|
it("can schedule a very short attack", () => {
|
|
const e = {
|
|
attack: 0.001,
|
|
decay: 0.01,
|
|
release: 0.1,
|
|
sustain: 0.1,
|
|
};
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.attackCurve = "exponential";
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
}, 0.2).then((buffer) => {
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.within(0, 1);
|
|
}, 0, e.attack);
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.within(e.sustain - 0.001, 1);
|
|
}, e.attack, e.attack + e.decay);
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.closeTo(e.sustain, 0.01);
|
|
}, e.attack + e.decay);
|
|
});
|
|
});
|
|
|
|
it("can schedule an attack of time 0", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(0, 0.1);
|
|
env.toDestination();
|
|
env.triggerAttack(0.1);
|
|
}, 0.2).then((buffer) => {
|
|
expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.001);
|
|
expect(buffer.getValueAtTime(0.0999)).to.be.closeTo(0, 0.001);
|
|
expect(buffer.getValueAtTime(0.1)).to.be.closeTo(1, 0.001);
|
|
});
|
|
});
|
|
|
|
it("correctly schedule a release", () => {
|
|
const e = {
|
|
attack: 0.001,
|
|
decay: 0.01,
|
|
release: 0.3,
|
|
sustain: 0.5,
|
|
};
|
|
const releaseTime = 0.2;
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.attackCurve = "exponential";
|
|
env.toDestination();
|
|
env.triggerAttackRelease(releaseTime);
|
|
}, 0.6).then((buffer) => {
|
|
const sustainStart = e.attack + e.decay;
|
|
const sustainEnd = sustainStart + releaseTime;
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.below(e.sustain + 0.01);
|
|
}, sustainStart, sustainEnd);
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.closeTo(0, 0.01);
|
|
}, releaseTime + e.release);
|
|
});
|
|
});
|
|
|
|
it("can retrigger a short attack at the same time as previous release", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(0.001, 0.1, 0.5);
|
|
env.attackCurve = "linear";
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
env.triggerRelease(0.4);
|
|
env.triggerAttack(0.4);
|
|
}, 0.6).then(buffer => {
|
|
expect(buffer.getValueAtTime(0.4)).be.closeTo(0.5, 0.01);
|
|
expect(buffer.getValueAtTime(0.40025)).be.closeTo(0.75, 0.01);
|
|
expect(buffer.getValueAtTime(0.4005)).be.closeTo(1, 0.01);
|
|
});
|
|
});
|
|
|
|
it("is silent before and after triggering", () => {
|
|
const e = {
|
|
attack: 0.001,
|
|
decay: 0.01,
|
|
release: 0.3,
|
|
sustain: 0.5,
|
|
};
|
|
const releaseTime = 0.2;
|
|
const attackTime = 0.1;
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.attackCurve = "exponential";
|
|
env.toDestination();
|
|
env.triggerAttack(attackTime);
|
|
env.triggerRelease(releaseTime);
|
|
}, 0.6).then((buffer) => {
|
|
expect(buffer.getValueAtTime(attackTime - 0.001)).to.equal(0);
|
|
expect(buffer.getValueAtTime(e.attack + e.decay + releaseTime + e.release)).to.be.below(0.01);
|
|
});
|
|
});
|
|
|
|
it("is silent after decay if sustain is 0", () => {
|
|
const e = {
|
|
attack: 0.01,
|
|
decay: 0.04,
|
|
sustain: 0,
|
|
};
|
|
const attackTime = 0.1;
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain);
|
|
env.toDestination();
|
|
env.triggerAttack(attackTime);
|
|
}, 0.4).then((buffer) => {
|
|
buffer.forEach((sample, time) => {
|
|
expect(buffer.getValueAtTime(attackTime - 0.001)).to.equal(0);
|
|
expect(buffer.getValueAtTime(attackTime + e.attack + e.decay)).to.be.below(0.01);
|
|
});
|
|
});
|
|
});
|
|
|
|
it("correctly schedule an attack release envelope", () => {
|
|
const e = {
|
|
attack: 0.08,
|
|
decay: 0.2,
|
|
release: 0.2,
|
|
sustain: 0.1,
|
|
};
|
|
const releaseTime = 0.4;
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
env.triggerRelease(releaseTime);
|
|
}).then((buffer) => {
|
|
buffer.forEach((sample, time) => {
|
|
if (time < e.attack) {
|
|
expect(sample).to.be.within(0, 1);
|
|
} else if (time < e.attack + e.decay) {
|
|
expect(sample).to.be.within(e.sustain, 1);
|
|
} else if (time < releaseTime) {
|
|
expect(sample).to.be.closeTo(e.sustain, 0.1);
|
|
} else if (time < releaseTime + e.release) {
|
|
expect(sample).to.be.within(0, e.sustain + 0.01);
|
|
} else {
|
|
expect(sample).to.be.below(0.0001);
|
|
}
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can schedule a combined AttackRelease", () => {
|
|
const e = {
|
|
attack: 0.1,
|
|
decay: 0.2,
|
|
release: 0.1,
|
|
sustain: 0.35,
|
|
};
|
|
const releaseTime = 0.4;
|
|
const duration = 0.4;
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
env.triggerRelease(releaseTime);
|
|
}, 0.7).then((buffer) => {
|
|
buffer.forEach((sample, time) => {
|
|
if (time < e.attack) {
|
|
expect(sample).to.be.within(0, 1);
|
|
} else if (time < e.attack + e.decay) {
|
|
expect(sample).to.be.within(e.sustain - 0.001, 1);
|
|
} else if (time < duration) {
|
|
expect(sample).to.be.closeTo(e.sustain, 0.1);
|
|
} else if (time < duration + e.release) {
|
|
expect(sample).to.be.within(0, e.sustain + 0.01);
|
|
} else {
|
|
expect(sample).to.be.below(0.0015);
|
|
}
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can schedule a combined AttackRelease with velocity", () => {
|
|
const e = {
|
|
attack: 0.1,
|
|
decay: 0.2,
|
|
release: 0.1,
|
|
sustain: 0.35,
|
|
};
|
|
const releaseTime = 0.4;
|
|
const duration = 0.4;
|
|
const velocity = 0.4;
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.toDestination();
|
|
env.triggerAttack(0, velocity);
|
|
env.triggerRelease(releaseTime);
|
|
}, 0.7).then((buffer) => {
|
|
buffer.forEach((sample, time) => {
|
|
if (time < e.attack) {
|
|
expect(sample).to.be.within(0, velocity + 0.01);
|
|
} else if (time < e.attack + e.decay) {
|
|
expect(sample).to.be.within(e.sustain * velocity - 0.01, velocity + 0.01);
|
|
} else if (time < duration) {
|
|
expect(sample).to.be.closeTo(e.sustain * velocity, 0.1);
|
|
} else if (time < duration + e.release) {
|
|
expect(sample).to.be.within(0, e.sustain * velocity + 0.01);
|
|
} else {
|
|
expect(sample).to.be.below(0.01);
|
|
}
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can schedule multiple envelopes", () => {
|
|
const e = {
|
|
attack: 0.1,
|
|
decay: 0.2,
|
|
release: 0.1,
|
|
sustain: 0.0,
|
|
};
|
|
return Offline(() => {
|
|
const env = new Envelope(e.attack, e.decay, e.sustain, e.release);
|
|
env.toDestination();
|
|
env.triggerAttack(0);
|
|
env.triggerAttack(0.5);
|
|
}, 0.85).then((buffer) => {
|
|
// first trigger
|
|
expect(buffer.getValueAtTime(0)).to.be.closeTo(0, 0.01);
|
|
expect(buffer.getValueAtTime(0.1)).to.be.closeTo(1, 0.01);
|
|
expect(buffer.getValueAtTime(0.3)).to.be.closeTo(0, 0.01);
|
|
// second trigger
|
|
expect(buffer.getValueAtTime(0.5)).to.be.closeTo(0, 0.01);
|
|
expect(buffer.getValueAtTime(0.6)).to.be.closeTo(1, 0.01);
|
|
expect(buffer.getValueAtTime(0.8)).to.be.closeTo(0, 0.01);
|
|
});
|
|
});
|
|
|
|
it("can schedule multiple attack/releases with no discontinuities", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(0.1, 0.2, 0.2, 0.4).toDestination();
|
|
env.triggerAttackRelease(0, 0.4);
|
|
env.triggerAttackRelease(0.4, 0.11);
|
|
env.triggerAttackRelease(0.45, 0.1);
|
|
env.triggerAttackRelease(1.1, 0.09);
|
|
env.triggerAttackRelease(1.5, 0.3);
|
|
env.triggerAttackRelease(1.8, 0.29);
|
|
}, 2).then((buffer) => {
|
|
// test for discontinuities
|
|
let lastSample = 0;
|
|
buffer.forEach((sample, time) => {
|
|
expect(sample).to.be.at.most(1);
|
|
const diff = Math.abs(lastSample - sample);
|
|
expect(diff).to.be.lessThan(0.001);
|
|
lastSample = sample;
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can schedule multiple 'linear' attack/releases with no discontinuities", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(0.1, 0.2, 0.2, 0.4).toDestination();
|
|
env.attackCurve = "linear";
|
|
env.releaseCurve = "linear";
|
|
env.triggerAttackRelease(0, 0.4);
|
|
env.triggerAttackRelease(0.4, 0.11);
|
|
env.triggerAttackRelease(0.45, 0.1);
|
|
env.triggerAttackRelease(1.1, 0.09);
|
|
env.triggerAttackRelease(1.5, 0.3);
|
|
env.triggerAttackRelease(1.8, 0.29);
|
|
}, 2).then((buffer) => {
|
|
// test for discontinuities
|
|
let lastSample = 0;
|
|
buffer.forEach((sample, time) => {
|
|
expect(sample).to.be.at.most(1);
|
|
const diff = Math.abs(lastSample - sample);
|
|
expect(diff).to.be.lessThan(0.001);
|
|
lastSample = sample;
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can schedule multiple 'exponential' attack/releases with no discontinuities", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(0.1, 0.2, 0.2, 0.4).toDestination();
|
|
env.attackCurve = "exponential";
|
|
env.releaseCurve = "exponential";
|
|
env.triggerAttackRelease(0, 0.4);
|
|
env.triggerAttackRelease(0.4, 0.11);
|
|
env.triggerAttackRelease(0.45, 0.1);
|
|
env.triggerAttackRelease(1.1, 0.09);
|
|
env.triggerAttackRelease(1.5, 0.3);
|
|
env.triggerAttackRelease(1.8, 0.29);
|
|
}, 2).then((buffer) => {
|
|
// test for discontinuities
|
|
let lastSample = 0;
|
|
buffer.forEach((sample, time) => {
|
|
expect(sample).to.be.at.most(1);
|
|
const diff = Math.abs(lastSample - sample);
|
|
expect(diff).to.be.lessThan(0.0035);
|
|
lastSample = sample;
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can schedule multiple 'sine' attack/releases with no discontinuities", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(0.1, 0.2, 0.2, 0.4).toDestination();
|
|
env.attackCurve = "sine";
|
|
env.releaseCurve = "sine";
|
|
env.triggerAttackRelease(0, 0.4);
|
|
env.triggerAttackRelease(0.4, 0.11);
|
|
env.triggerAttackRelease(0.45, 0.1);
|
|
env.triggerAttackRelease(1.1, 0.09);
|
|
env.triggerAttackRelease(1.5, 0.3);
|
|
env.triggerAttackRelease(1.8, 0.29);
|
|
}, 2).then((buffer) => {
|
|
// test for discontinuities
|
|
let lastSample = 0;
|
|
buffer.forEach((sample, time) => {
|
|
expect(sample).to.be.at.most(1);
|
|
const diff = Math.abs(lastSample - sample);
|
|
expect(diff).to.be.lessThan(0.0035);
|
|
lastSample = sample;
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can schedule multiple 'cosine' attack/releases with no discontinuities", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(0.1, 0.2, 0.2, 0.4).toDestination();
|
|
env.attackCurve = "cosine";
|
|
env.releaseCurve = "cosine";
|
|
env.triggerAttackRelease(0, 0.4);
|
|
env.triggerAttackRelease(0.4, 0.11);
|
|
env.triggerAttackRelease(0.45, 0.1);
|
|
env.triggerAttackRelease(1.1, 0.09);
|
|
env.triggerAttackRelease(1.5, 0.3);
|
|
env.triggerAttackRelease(1.8, 0.29);
|
|
}, 2).then((buffer) => {
|
|
// test for discontinuities
|
|
let lastSample = 0;
|
|
buffer.forEach((sample, time) => {
|
|
expect(sample).to.be.at.most(1);
|
|
const diff = Math.abs(lastSample - sample);
|
|
expect(diff).to.be.lessThan(0.002);
|
|
lastSample = sample;
|
|
});
|
|
});
|
|
});
|
|
|
|
it("reports its current envelope value (.value)", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(1, 0.2, 1).toDestination();
|
|
expect(env.value).to.be.closeTo(0, 0.01);
|
|
env.triggerAttack();
|
|
return (time) => {
|
|
expect(env.value).to.be.closeTo(time, 0.01);
|
|
};
|
|
}, 0.5);
|
|
});
|
|
|
|
it("can cancel a schedule envelope", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope(0.1, 0.2, 1).toDestination();
|
|
env.triggerAttack(0.2);
|
|
env.cancel(0.2);
|
|
}, 0.3).then((buffer) => {
|
|
expect(buffer.isSilent()).to.be.true;
|
|
});
|
|
});
|
|
});
|
|
|
|
context("Attack/Release Curves", () => {
|
|
|
|
const envelopeCurves: EnvelopeCurve[] = ["linear", "exponential", "bounce", "cosine", "ripple", "sine", "step"];
|
|
|
|
it("can get set all of the types as the attackCurve", () => {
|
|
|
|
const env = new Envelope();
|
|
envelopeCurves.forEach(type => {
|
|
env.attackCurve = type;
|
|
expect(env.attackCurve).to.equal(type);
|
|
});
|
|
env.dispose();
|
|
});
|
|
|
|
it("can get set all of the types as the releaseCurve", () => {
|
|
const env = new Envelope();
|
|
envelopeCurves.forEach(type => {
|
|
env.releaseCurve = type;
|
|
expect(env.releaseCurve).to.equal(type);
|
|
});
|
|
env.dispose();
|
|
});
|
|
|
|
it("outputs a signal when the attack/release curves are set to 'bounce'", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope({
|
|
attack: 0.3,
|
|
attackCurve: "bounce",
|
|
decay: 0,
|
|
release: 0.3,
|
|
releaseCurve: "bounce",
|
|
sustain: 1,
|
|
}).toDestination();
|
|
env.triggerAttackRelease(0.3, 0.1);
|
|
}, 0.8).then((buffer) => {
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.above(0);
|
|
}, 0.101, 0.7);
|
|
});
|
|
});
|
|
|
|
it("outputs a signal when the attack/release curves are set to 'ripple'", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope({
|
|
attack: 0.3,
|
|
attackCurve: "ripple",
|
|
decay: 0,
|
|
release: 0.3,
|
|
releaseCurve: "ripple",
|
|
sustain: 1,
|
|
}).toDestination();
|
|
env.triggerAttackRelease(0.3, 0.1);
|
|
}, 0.8).then((buffer) => {
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.above(0);
|
|
}, 0.101, 0.7);
|
|
});
|
|
});
|
|
|
|
it("outputs a signal when the attack/release curves are set to 'sine'", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope({
|
|
attack: 0.3,
|
|
attackCurve: "sine",
|
|
decay: 0,
|
|
release: 0.3,
|
|
releaseCurve: "sine",
|
|
sustain: 1,
|
|
}).toDestination();
|
|
env.triggerAttackRelease(0.3, 0.1);
|
|
}, 0.8).then((buffer) => {
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.above(0);
|
|
}, 0.101, 0.7);
|
|
});
|
|
});
|
|
|
|
it("outputs a signal when the attack/release curves are set to 'cosine'", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope({
|
|
attack: 0.3,
|
|
attackCurve: "cosine",
|
|
decay: 0,
|
|
release: 0.3,
|
|
releaseCurve: "cosine",
|
|
sustain: 1,
|
|
}).toDestination();
|
|
env.triggerAttackRelease(0.3, 0.1);
|
|
}, 0.8).then((buffer) => {
|
|
buffer.forEachBetween((sample) => {
|
|
expect(sample).to.be.above(0);
|
|
}, 0.101, 0.7);
|
|
});
|
|
});
|
|
|
|
it("outputs a signal when the attack/release curves are set to 'step'", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope({
|
|
attack: 0.3,
|
|
attackCurve: "step",
|
|
decay: 0,
|
|
release: 0.3,
|
|
releaseCurve: "step",
|
|
sustain: 1,
|
|
}).toDestination();
|
|
env.triggerAttackRelease(0.3, 0.1);
|
|
}, 0.8).then((buffer) => {
|
|
buffer.forEach((sample, time) => {
|
|
if (time > 0.3 && time < 0.5) {
|
|
expect(sample).to.be.above(0);
|
|
} else if (time < 0.1) {
|
|
expect(sample).to.equal(0);
|
|
}
|
|
});
|
|
});
|
|
});
|
|
|
|
it("outputs a signal when the attack/release curves are set to an array", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope({
|
|
attack: 0.3,
|
|
attackCurve: [0, 1, 0, 1],
|
|
decay: 0,
|
|
release: 0.3,
|
|
releaseCurve: [1, 0, 1, 0],
|
|
sustain: 1,
|
|
}).toDestination();
|
|
expect(env.attackCurve).to.deep.equal([0, 1, 0, 1]);
|
|
env.triggerAttackRelease(0.3, 0.1);
|
|
}, 0.8).then((buffer) => {
|
|
buffer.forEach((sample, time) => {
|
|
if (time > 0.4 && time < 0.5) {
|
|
expect(sample).to.be.above(0);
|
|
} else if (time < 0.1) {
|
|
expect(sample).to.equal(0);
|
|
}
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can scale a velocity with a custom curve", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope({
|
|
attack: 0.3,
|
|
attackCurve: [0, 1, 0, 1],
|
|
decay: 0,
|
|
release: 0.3,
|
|
releaseCurve: [1, 0, 1, 0],
|
|
sustain: 1,
|
|
}).toDestination();
|
|
env.triggerAttackRelease(0.4, 0.1, 0.5);
|
|
}, 0.8).then((buffer) => {
|
|
buffer.forEach((sample) => {
|
|
expect(sample).to.be.at.most(0.51);
|
|
});
|
|
});
|
|
});
|
|
|
|
it("can retrigger partial envelope with custom type", () => {
|
|
return Offline(() => {
|
|
const env = new Envelope({
|
|
attack: 0.5,
|
|
attackCurve: "cosine",
|
|
decay: 0,
|
|
release: 0.5,
|
|
releaseCurve: "sine",
|
|
sustain: 1,
|
|
}).toDestination();
|
|
env.triggerAttack(0);
|
|
env.triggerRelease(0.2);
|
|
env.triggerAttack(0.5);
|
|
}, 1).then((buffer) => {
|
|
expect(buffer.getValueAtTime(0)).to.equal(0);
|
|
expect(buffer.getValueAtTime(0.1)).to.be.closeTo(0.32, 0.01);
|
|
expect(buffer.getValueAtTime(0.2)).to.be.closeTo(0.6, 0.01);
|
|
expect(buffer.getValueAtTime(0.3)).to.be.closeTo(0.53, 0.01);
|
|
expect(buffer.getValueAtTime(0.4)).to.be.closeTo(0.38, 0.01);
|
|
expect(buffer.getValueAtTime(0.5)).to.be.closeTo(0.2, 0.01);
|
|
expect(buffer.getValueAtTime(0.6)).to.be.closeTo(0.52, 0.01);
|
|
expect(buffer.getValueAtTime(0.7)).to.be.closeTo(0.78, 0.01);
|
|
expect(buffer.getValueAtTime(0.8)).to.be.closeTo(0.95, 0.01);
|
|
expect(buffer.getValueAtTime(0.9)).to.be.closeTo(1, 0.01);
|
|
});
|
|
});
|
|
});
|
|
});
|