From 1c5a3f8a36dcaca33b44ec3c368f875ae4cff386 Mon Sep 17 00:00:00 2001
From: Hyunjin Song <tteu.ingog@gmail.com>
Date: Sun, 26 Apr 2020 17:59:43 +0900
Subject: [PATCH] DrumSynth: ensure correct envelope length in any sample rate
 (#5467)

---
 src/core/DrumSynth.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/core/DrumSynth.cpp b/src/core/DrumSynth.cpp
index b39e8f52e..6532ecae2 100644
--- a/src/core/DrumSynth.cpp
+++ b/src/core/DrumSynth.cpp
@@ -320,6 +320,8 @@ int DrumSynth::GetDSFileSamples(QString dsfile, int16_t *&wave, int channels, sa
   timestretch = .01f * mem_time * GetPrivateProfileFloat(sec,"Stretch",100.0,dsfile);
   if(timestretch<0.2f) timestretch=0.2f;
   if(timestretch>10.f) timestretch=10.f;
+  // the unit of envelope lengths is a sample in 44100Hz sample rate, so correct it
+  timestretch *= Fs / 44100.f;
 
   DGain = 1.0f; //leave this here!
   DGain = (float)powf(10.0, 0.05 * GetPrivateProfileFloat(sec,"Level",0,dsfile));