diff --git a/Sources/CDunneAudioKit/SamplerDSP.mm b/Sources/CDunneAudioKit/SamplerDSP.mm
index 3cc779e..d8d5e3f 100644
--- a/Sources/CDunneAudioKit/SamplerDSP.mm
+++ b/Sources/CDunneAudioKit/SamplerDSP.mm
@@ -99,6 +99,42 @@ void akCoreSamplerSetLoopThruRelease(CoreSamplerRef pSampler, bool value) {
 
     void updateCoreSampler(CoreSampler* newSampler) {
         newSampler->init(sampleRate);
+        newSampler->setADSRAttackDurationSeconds(sampler->getADSRAttackDurationSeconds());
+        newSampler->setADSRDecayDurationSeconds(sampler->getADSRDecayDurationSeconds());
+        newSampler->setADSRHoldDurationSeconds(sampler->getADSRHoldDurationSeconds());
+        newSampler->setADSRSustainFraction(sampler->getADSRSustainFraction());
+        newSampler->setADSRReleaseHoldDurationSeconds(sampler->getADSRReleaseHoldDurationSeconds());
+        newSampler->setADSRReleaseDurationSeconds(sampler->getADSRReleaseDurationSeconds());
+        
+        newSampler->setFilterAttackDurationSeconds(sampler->getFilterAttackDurationSeconds());
+        newSampler->setFilterDecayDurationSeconds(sampler->getFilterDecayDurationSeconds());
+        newSampler->setFilterSustainFraction(sampler->getFilterSustainFraction());
+        newSampler->setFilterReleaseDurationSeconds(sampler->getFilterReleaseDurationSeconds());
+        
+        newSampler->setPitchAttackDurationSeconds(sampler->getPitchAttackDurationSeconds());
+        newSampler->setPitchDecayDurationSeconds(sampler->getPitchDecayDurationSeconds());
+        newSampler->setPitchSustainFraction(sampler->getPitchSustainFraction());
+        newSampler->setPitchReleaseDurationSeconds(sampler->getPitchReleaseDurationSeconds());
+        newSampler->pitchADSRSemitones = sampler->pitchADSRSemitones;
+        
+        newSampler->pitchOffset = sampler->pitchOffset;
+        newSampler->cutoffEnvelopeStrength = sampler->cutoffEnvelopeStrength;
+        newSampler->cutoffMultiple = sampler->cutoffMultiple;
+        newSampler->filterEnvelopeVelocityScaling = sampler->filterEnvelopeVelocityScaling;
+        newSampler->glideRate = sampler->glideRate;
+        newSampler->isFilterEnabled = sampler->isFilterEnabled;
+        newSampler->isLegato = sampler->isLegato;
+        newSampler->isMonophonic = sampler->isMonophonic;
+        newSampler->keyTracking = sampler->keyTracking;
+        newSampler->linearResonance = sampler->linearResonance;
+        newSampler->masterVolume = sampler->masterVolume;
+        newSampler->portamentoRate = sampler->portamentoRate;
+        newSampler->vibratoDepth = sampler->vibratoDepth;
+        newSampler->vibratoFrequency = sampler->vibratoFrequency;
+        newSampler->voiceVibratoDepth = sampler->voiceVibratoDepth;
+        newSampler->voiceVibratoFrequency = sampler->voiceVibratoFrequency;
+        newSampler->setLoopThruRelease(sampler->loopThruRelease);
+        
         sampler.set(newSampler);
     }
 };
diff --git a/Tests/DunneAudioKitTests/SamplerTests.swift b/Tests/DunneAudioKitTests/SamplerTests.swift
index 46fc93d..63813dc 100644
--- a/Tests/DunneAudioKitTests/SamplerTests.swift
+++ b/Tests/DunneAudioKitTests/SamplerTests.swift
@@ -37,7 +37,26 @@ class SamplerTests: XCTestCase {
         sampler.stop(noteNumber: 88)
         testMD5(audio)
     }
-
+    
+    func testSamplerAttackVolumeEnvelope() {
+        let engine = AudioEngine()
+        let sampleURL = Bundle.module.url(forResource: "TestResources/12345", withExtension: "wav")!
+        let file = try! AVAudioFile(forReading: sampleURL)
+        let sampler = Sampler()
+        sampler.load(avAudioFile: file)
+        sampler.masterVolume = 1
+        engine.output = sampler
+        let audio = engine.startTest(totalDuration: 8.0)
+        audio.append(engine.render(duration: 1.0)) //run test for a second before setting parameters
+        sampler.attackDuration = 1.0
+        sampler.load(avAudioFile: file)
+        audio.append(engine.render(duration: 1.0))//run test to give time to load
+        sampler.play(noteNumber: 65, velocity: 127)
+        audio.append(engine.render(duration: 6.0))
+        sampler.stop(noteNumber: 65)
+        testMD5(audio)
+    }
+    
     /// Run this test with thread sanitizer.
     func testSamplerThreadSafety() {
         let engine = AudioEngine()
diff --git a/Tests/DunneAudioKitTests/ValidatedMD5s.swift b/Tests/DunneAudioKitTests/ValidatedMD5s.swift
index deb93d6..6f05d4a 100644
--- a/Tests/DunneAudioKitTests/ValidatedMD5s.swift
+++ b/Tests/DunneAudioKitTests/ValidatedMD5s.swift
@@ -12,6 +12,7 @@ extension XCTestCase {
 
 let validatedMD5s: [String: String] = [
     "-[SamplerTests testSampler]": "8739229f6bc52fa5db3cc2afe85ee580",
+    "-[SamplerTests testSamplerAttackVolumeEnvelope]": "bf00177ac48148fa4f780e5e364e84e2",
     "-[SynthTests testChord]": "155d8175419836512ead0794f551c7a0",
     "-[SynthTests testMonophonicPlayback]": "77fb882efcaf29c3a426036d85d04090",
     "-[SynthTests testParameterInitialization]": "e27794e7055b8ebdbf7d0591e980484e",