audio-analysis.js

let ampMax = 0.1,
	fftBMax = 0.1,
	fftMMax = 0.1,
	fftHMax = 0.1;
let maxDecay = 0.998;

function trackAudio(ampV, fftBV, fftMV, fftHV) {
	ampMax = max(ampMax * maxDecay, 0.01);
	fftBMax = max(fftBMax * maxDecay, 0.01);
	fftMMax = max(fftMMax * maxDecay, 0.01);
	fftHMax = max(fftHMax * maxDecay, 0.01);

	if (ampV > ampMax) ampMax = ampV;
	if (fftBV > fftBMax) fftBMax = fftBV;
	if (fftMV > fftMMax) fftMMax = fftMV;
	if (fftHV > fftHMax) fftHMax = fftHV;
}

function mapBass(min, max) {
	return map(fft[5], 0, fftBMax, min, max);
}

function mapMid(min, max) {
	return map(fft[65], 0, fftMMax, min, max);
}

function mapHigh(min, max) {
	return map(fft[110], 0, fftHMax, min, max);
}

function mapBassEase(min, max) {
	return map(fftEase[5], 0, fftBMax, min, max);
}

function mapMidEase(min, max) {
	return map(fftEase[65], 0, fftMMax, min, max);
}

function mapHighEase(min, max) {
	return map(fftEase[110], 0, fftHMax, min, max);
}