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65 lines
1.7 KiB
JavaScript
65 lines
1.7 KiB
JavaScript
import { Pattern, toMidi } from '@strudel.cycles/core';
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import { samples } from '@strudel.cycles/webaudio';
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export async function prebake({ isMock = false, baseDir = '.' } = {}) {
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samples(
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{
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piano: {
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A0: 'A0v8.mp3',
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C1: 'C1v8.mp3',
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Ds1: 'Ds1v8.mp3',
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Fs1: 'Fs1v8.mp3',
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A1: 'A1v8.mp3',
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C2: 'C2v8.mp3',
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Ds2: 'Ds2v8.mp3',
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Fs2: 'Fs2v8.mp3',
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A2: 'A2v8.mp3',
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C3: 'C3v8.mp3',
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Ds3: 'Ds3v8.mp3',
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Fs3: 'Fs3v8.mp3',
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A3: 'A3v8.mp3',
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C4: 'C4v8.mp3',
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Ds4: 'Ds4v8.mp3',
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Fs4: 'Fs4v8.mp3',
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A4: 'A4v8.mp3',
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C5: 'C5v8.mp3',
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Ds4: 'Ds4v8.mp3',
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Fs5: 'Fs5v8.mp3',
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A5: 'A5v8.mp3',
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C6: 'C6v8.mp3',
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Ds6: 'Ds6v8.mp3',
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Fs6: 'Fs6v8.mp3',
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A6: 'A6v8.mp3',
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C7: 'C7v8.mp3',
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Ds7: 'Ds7v8.mp3',
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Fs7: 'Fs7v8.mp3',
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A7: 'A7v8.mp3',
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C8: 'C8v8.mp3',
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},
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},
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// https://archive.org/details/SalamanderGrandPianoV3
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// License: CC-by http://creativecommons.org/licenses/by/3.0/ Author: Alexander Holm
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`${baseDir}/piano/`,
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);
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if (!isMock) {
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await fetch('EmuSP12.json')
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.then((res) => res.json())
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.then((json) => samples(json, `${baseDir}/EmuSP12/`));
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}
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}
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const maxPan = toMidi('C8');
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const panwidth = (pan, width) => pan * width + (1 - width) / 2;
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Pattern.prototype.piano = function () {
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return this.clip(1)
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.s('piano')
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.release(0.1)
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.fmap((value) => {
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const midi = typeof value.note === 'string' ? toMidi(value.note) : value.note;
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// pan by pitch
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const pan = panwidth(Math.min(midi / maxPan, 1), 0.5);
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return { ...value, pan: (value.pan || 1) * pan };
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});
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};
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