diff --git a/src/sfizz/effects/Eq.cpp b/src/sfizz/effects/Eq.cpp
index 2e4ad052..8c1188c5 100644
--- a/src/sfizz/effects/Eq.cpp
+++ b/src/sfizz/effects/Eq.cpp
@@ -36,7 +36,6 @@ namespace fx {
     void Eq::setSampleRate(double sampleRate)
     {
         _filter.init(sampleRate);
-        _filter.clear();
     }
 
     void Eq::setSamplesPerBlock(int samplesPerBlock)
@@ -67,7 +66,7 @@ namespace fx {
         EQDescription desc;
 
         for (const Opcode& opc : members) {
-            switch (hash(opc.value)) {
+            switch (opc.lettersOnlyHash) {
             case hash("eq_freq"):
                 setValueFromOpcode(opc, desc.frequency, Default::eqFrequencyRange);
                 break;
diff --git a/src/sfizz/effects/Eq.h b/src/sfizz/effects/Eq.h
index 0c94cc9a..7f1f2b63 100644
--- a/src/sfizz/effects/Eq.h
+++ b/src/sfizz/effects/Eq.h
@@ -48,7 +48,7 @@ namespace fx {
     private:
         sfz::FilterEq _filter;
         EQDescription _desc;
-        AudioBuffer<float> _tempBuffer { 3, config::defaultSamplesPerBlock };
+        AudioBuffer<float, 3> _tempBuffer { 3, config::defaultSamplesPerBlock };
     };
 
 } // namespace fx
diff --git a/src/sfizz/effects/Filter.cpp b/src/sfizz/effects/Filter.cpp
index 1303132e..42ee5c4f 100644
--- a/src/sfizz/effects/Filter.cpp
+++ b/src/sfizz/effects/Filter.cpp
@@ -38,7 +38,6 @@ namespace fx {
     void Filter::setSampleRate(double sampleRate)
     {
         _filter.init(sampleRate);
-        _filter.clear();
     }
 
     void Filter::setSamplesPerBlock(int samplesPerBlock)
@@ -69,7 +68,7 @@ namespace fx {
         FilterDescription desc;
 
         for (const Opcode& opc : members) {
-            switch (hash(opc.value)) {
+            switch (opc.lettersOnlyHash) {
             case hash("filter_cutoff"):
                 setValueFromOpcode(opc, desc.cutoff, Default::filterCutoffRange);
                 break;
diff --git a/src/sfizz/effects/Filter.h b/src/sfizz/effects/Filter.h
index c3265667..51546041 100644
--- a/src/sfizz/effects/Filter.h
+++ b/src/sfizz/effects/Filter.h
@@ -48,7 +48,7 @@ namespace fx {
     private:
         sfz::Filter _filter;
         FilterDescription _desc;
-        AudioBuffer<float> _tempBuffer { 3, config::defaultSamplesPerBlock };
+        AudioBuffer<float, 3> _tempBuffer { 3, config::defaultSamplesPerBlock };
     };
 
 } // namespace fx