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Free-run the envelope if the sustain value is low enough

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Value taken from Sforzando
This commit is contained in:
Paul Ferrand 2021-03-19 21:26:14 +01:00
parent 09222d62bd
commit 287832e200
2 changed files with 6 additions and 1 deletions
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2
src/sfizz/ADSREnvelope.cpp
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@ -52,7 +52,7 @@ void ADSREnvelope::reset(const EGDescription& desc, const Region& region, const
sustainThreshold = this->sustain + config::virtuallyZero; sustainThreshold = this->sustain + config::virtuallyZero;
shouldRelease = false; shouldRelease = false;
freeRunning = ( freeRunning = (
(this->sustain == Float(0.0)) (this->sustain <= Float(config::sustainFreeRunningThreshold))
|| (region.loopMode == LoopMode::one_shot && region.isOscillator()) || (region.loopMode == LoopMode::one_shot && region.isOscillator())
); );
currentValue = this->start; currentValue = this->start;

5
src/sfizz/Config.h
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@ -167,6 +167,11 @@ namespace config {
* @brief The smoothing time constant per "smooth" steps * @brief The smoothing time constant per "smooth" steps
*/ */
constexpr float smoothTauPerStep { 3e-3 }; constexpr float smoothTauPerStep { 3e-3 };
/**
* @brief If a value below this threshold is given to `ampeg_sustain`, the envelope will free-run
* and the voice will release itself at the end of the decay stage.
*/
constexpr float sustainFreeRunningThreshold { 0.0032f };
} // namespace config } // namespace config
} // namespace sfz } // namespace sfz