32 lines
765 B
TypeScript
32 lines
765 B
TypeScript
import type { AudioProcessor, ProcessorCategory } from './AudioProcessor';
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export class ExpFadeIn implements AudioProcessor {
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getName(): string {
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return 'Fade In (Exp)';
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}
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getDescription(): string {
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return 'Applies an exponential fade from silence to current level';
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}
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getCategory(): ProcessorCategory {
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return 'Amplitude';
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}
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process(leftIn: Float32Array, rightIn: Float32Array): [Float32Array, Float32Array] {
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const length = leftIn.length;
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const leftOut = new Float32Array(length);
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const rightOut = new Float32Array(length);
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for (let i = 0; i < length; i++) {
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const t = i / length;
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const gain = 1.0 - Math.exp(-5.0 * t);
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leftOut[i] = leftIn[i] * gain;
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rightOut[i] = rightIn[i] * gain;
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}
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return [leftOut, rightOut];
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}
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}
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