Function perceptualToAmplitude

source/core/StarAudio.cpp:22–28

https://github.com/discord/perceptual

float const DefaultPerceptualBoostRangeDb = 6.f;
// https://github.com/discord/perceptual
float perceptualToAmplitude(float perceptual, float normalizedMax, float range, float boostRange) {
  if (perceptual == 0.f) return 0.f;
  float dB = perceptual > normalizedMax
    ? ((perceptual - normalizedMax) / normalizedMax) * boostRange
    : (perceptual / normalizedMax) * range - range;
  return normalizedMax * pow(10.f, dB / 20.f);
}

float amplitudeToPerceptual(float amp, float normalizedMax, float range, float boostRange) {
  if (amp == 0.f) return 0.f;