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Use -10dB RMS formula for amplitude computation

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This commit is contained in:
Jack Andersen
2016-05-21 13:41:45 -10:00
parent 491fa1cd6f
commit fbafa397fe
4 changed files with 9 additions and 8 deletions
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3
lib/Voice.cpp
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@@ -201,7 +201,8 @@ std::list<std::shared_ptr<Voice>>::iterator Voice::_destroyVoice(Voice* voice)
static void ApplyVolume(float vol, int16_t& samp)
{
/* -10dB to 0dB mapped to full volume range */
float factor = (std::pow(10.f, vol - 1.f) - 0.1f) * (1.f / 0.9f);
float factor = std::sqrt(std::pow(10.f, (vol - 1.f))) - 0.317f;
if (factor < 0.f) factor = 0.f;
samp *= factor;
}