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Pitch bars colors

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This commit is contained in:
Benjamin Bädorf 2019-06-08 16:29:22 +02:00
parent bc3f1e46ca
commit 550712d2e0
1 changed files with 16 additions and 2 deletions
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18
src/index.js
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@ -43,6 +43,8 @@ async function main() {
let fresh = false;
let spectrum = [];
let pitch = 0;
let minPitch = 90;
let maxPitch = 90;
let volume = 0;
let volumeThreshold = 0;
let bars = [];
@ -62,9 +64,16 @@ async function main() {
const currentVolume = getRMS(spectrum);
// get peak - a hack when our volumes are low
if (currentVolume > volumeThreshold) volumeThreshold = currentVolume;
if (currentVolume > volumeThreshold) {
volumeThreshold = currentVolume;
}
volume = currentVolume;
pitch = getPitch(spectrum, volume, volumeThreshold);
if (pitch > maxPitch) {
maxPitch = pitch
} else if (pitch < minPitch) {
minPitch = pitch;
}
}
const input = audioCtx.createMediaStreamSource(microphone);
@ -97,7 +106,8 @@ async function main() {
const newBars = [];
for (const bar of bars) {
sketch.fill(sketch.color(0, 0, (bar.volume / volumeThreshold) * 255));
const normalizedPitchColor = ((bar.pitch - minPitch) / (maxPitch - minPitch)) * 220;
sketch.fill(sketch.color(normalizedPitchColor, bar.volume, (bar.volume / volumeThreshold) * 255));
sketch.rect(bar.x, 0, bar.age * bar.volume * 2, window.innerHeight);
bar.age /= 2;
if (bar.age > 0.1) {
@ -108,6 +118,10 @@ async function main() {
bars = newBars;
};
});
setTimeout(() => {
// analyser.disconnect();
}, 5000);
}
main();