diff --git a/src/viper/effects/ViPERDDC.cpp b/src/viper/effects/ViPERDDC.cpp
index d59354c..f3d0362 100644
--- a/src/viper/effects/ViPERDDC.cpp
+++ b/src/viper/effects/ViPERDDC.cpp
@@ -12,6 +12,7 @@ ViPERDDC::ViPERDDC() :
 void ViPERDDC::Process(float *samples, uint32_t size) {
     if (!this->setCoeffsOk || this->arrSize == 0) return;
     if (!this->enable) return;
+    if (!isSamplingRateValid()) return;
 
     std::vector<std::array<float, 5>> *coeffsArr;
 
@@ -24,10 +25,6 @@ void ViPERDDC::Process(float *samples, uint32_t size) {
             coeffsArr = &this->coeffsArr48000;
             break;
         }
-        default: {
-            VIPER_LOGD("ViPERDDC::Process() -> Invalid sampling rate: %d", this->samplingRate);
-            return;
-        }
     }
 
     for (uint32_t i = 0; i < size * 2; i += 2) {
@@ -101,7 +98,7 @@ void ViPERDDC::Reset() {
     memset(this->x1R.data(), 0, this->arrSize * sizeof(float));
 }
 
-void ViPERDDC::SetCoeffs(uint32_t newCoeffsSize, float *newCoeffs44100, float *newCoeffs48000) {
+void ViPERDDC::SetCoeffs(uint32_t newCoeffsSize, const float *newCoeffs44100, const float *newCoeffs48000) {
     ReleaseResources();
 
     if (newCoeffsSize == 0) return;
@@ -148,6 +145,13 @@ void ViPERDDC::SetEnable(bool enable) {
 void ViPERDDC::SetSamplingRate(uint32_t samplingRate) {
     if (this->samplingRate != samplingRate) {
         this->samplingRate = samplingRate;
+        if (!isSamplingRateValid()) {
+            VIPER_LOGE("ViPERDDC::SetSamplingRate() -> Invalid sampling rate: %d", this->samplingRate);
+        }
         Reset();
     }
 }
+
+bool ViPERDDC::isSamplingRateValid() const {
+    return this->samplingRate == 44100 || this->samplingRate == 48000;
+}
diff --git a/src/viper/effects/ViPERDDC.h b/src/viper/effects/ViPERDDC.h
index 65b9c54..c8d2de0 100644
--- a/src/viper/effects/ViPERDDC.h
+++ b/src/viper/effects/ViPERDDC.h
@@ -10,7 +10,7 @@ class ViPERDDC {
 
     void Process(float *samples, uint32_t size);
     void Reset();
-    void SetCoeffs(uint32_t newCoeffsSize, float *newCoeffs44100, float *newCoeffs48000);
+    void SetCoeffs(uint32_t newCoeffsSize, const float *newCoeffs44100, const float *newCoeffs48000);
     void SetEnable(bool enable);
     void SetSamplingRate(uint32_t samplingRate);
 
@@ -31,6 +31,7 @@ class ViPERDDC {
     std::vector<float> y2R;
 
     void ReleaseResources();
+    bool isSamplingRateValid() const;
 };