diff --git a/audio/aidl/vts/EffectHelper.h b/audio/aidl/vts/EffectHelper.h
index 3877c60..f0622a8 100644
--- a/audio/aidl/vts/EffectHelper.h
+++ b/audio/aidl/vts/EffectHelper.h
@@ -84,6 +84,7 @@
 }
 
 static constexpr float kMaxAudioSampleValue = 1;
+static constexpr int kSamplingFrequency = 44100;
 
 class EffectHelper {
   public:
diff --git a/audio/aidl/vts/VtsHalBassBoostTargetTest.cpp b/audio/aidl/vts/VtsHalBassBoostTargetTest.cpp
index 5ce2a20..4c54043 100644
--- a/audio/aidl/vts/VtsHalBassBoostTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalBassBoostTargetTest.cpp
@@ -113,7 +113,6 @@
         }
     }
 
-    static constexpr int kSamplingFrequency = 44100;
     static constexpr int kDurationMilliSec = 720;
     static constexpr int kInputSize = kSamplingFrequency * kDurationMilliSec / 1000;
     long mInputFrameCount, mOutputFrameCount;
diff --git a/audio/aidl/vts/VtsHalEnvironmentalReverbTargetTest.cpp b/audio/aidl/vts/VtsHalEnvironmentalReverbTargetTest.cpp
index e31aae6..1e4e735 100644
--- a/audio/aidl/vts/VtsHalEnvironmentalReverbTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalEnvironmentalReverbTargetTest.cpp
@@ -226,7 +226,6 @@
 
     void generateSineWaveInput(std::vector<float>& input) {
         int frequency = 1000;
-        size_t kSamplingFrequency = 44100;
         for (size_t i = 0; i < input.size(); i++) {
             input[i] = sin(2 * M_PI * frequency * i / kSamplingFrequency);
         }
@@ -286,7 +285,6 @@
         }
     }
 
-    static constexpr int kSamplingFrequency = 44100;
     static constexpr int kDurationMilliSec = 500;
     static constexpr int kBufferSize = kSamplingFrequency * kDurationMilliSec / 1000;
 
diff --git a/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp b/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
index 542f0d8..8b82427 100644
--- a/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
@@ -81,7 +81,6 @@
                                            << "\ngetParam:" << getParam.toString();
     }
 
-    static constexpr int kSamplingFrequency = 44100;
     static constexpr int kDurationMilliSec = 500;
     static constexpr int kBufferSize = kSamplingFrequency * kDurationMilliSec / 1000;
     int mStereoChannelCount =
diff --git a/audio/aidl/vts/VtsHalVirtualizerTargetTest.cpp b/audio/aidl/vts/VtsHalVirtualizerTargetTest.cpp
index b449f3c..1b7dd67 100644
--- a/audio/aidl/vts/VtsHalVirtualizerTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalVirtualizerTargetTest.cpp
@@ -94,7 +94,6 @@
         }
     }
 
-    static constexpr int kSamplingFrequency = 44100;
     static constexpr int kDefaultChannelLayout = AudioChannelLayout::LAYOUT_STEREO;
     static constexpr int kDurationMilliSec = 720;
     static constexpr int kBufferSize = kSamplingFrequency * kDurationMilliSec / 1000;
diff --git a/audio/aidl/vts/VtsHalVolumeTargetTest.cpp b/audio/aidl/vts/VtsHalVolumeTargetTest.cpp
index 2c21d2e..eba3a24 100644
--- a/audio/aidl/vts/VtsHalVolumeTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalVolumeTargetTest.cpp
@@ -93,7 +93,6 @@
         }
     }
 
-    static constexpr int kSamplingFrequency = 44100;
     static constexpr int kDurationMilliSec = 720;
     static constexpr int kBufferSize = kSamplingFrequency * kDurationMilliSec / 1000;
     static constexpr int kMinLevel = -96;