From f6e0bb8b3f942d59d0373db3f53e464efca72ee3 Mon Sep 17 00:00:00 2001
From: Paul Ferrand <paul@ferrand.cc>
Date: Wed, 19 Aug 2020 19:12:33 +0200
Subject: [PATCH] Add special cases for the rate transformation in envelopes
 For increasing linear ramps, a 0s ramp is an increment of 1.0 For decaying
 exponential ramps, a 0s ramp is a multiplicator of 0.0f

---
 src/sfizz/ADSREnvelope.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/sfizz/ADSREnvelope.cpp b/src/sfizz/ADSREnvelope.cpp
index b17bce09..78415f8a 100644
--- a/src/sfizz/ADSREnvelope.cpp
+++ b/src/sfizz/ADSREnvelope.cpp
@@ -20,13 +20,18 @@ Type ADSREnvelope<Type>::secondsToSamples (Type timeInSeconds) const noexcept
 template<class Type>
 Type ADSREnvelope<Type>::secondsToLinRate (Type timeInSeconds) const noexcept
 {
-    timeInSeconds = std::max<Type>(timeInSeconds, config::virtuallyZero);
+    if (timeInSeconds == 0)
+        return 1.0f;
+
     return 1 / (sampleRate * timeInSeconds);
 };
 
 template<class Type>
 Type ADSREnvelope<Type>::secondsToExpRate (Type timeInSeconds) const noexcept
 {
+    if (timeInSeconds == 0)
+        return 0.0f;
+
     timeInSeconds = std::max<Type>(25e-3, timeInSeconds);
     return std::exp(-9.0 / (timeInSeconds * sampleRate));
 };