diff --git a/audio/aidl/vts/VtsHalAudioEffectTargetTest.cpp b/audio/aidl/vts/VtsHalAudioEffectTargetTest.cpp
index 5b83d73..2f47d07 100644
--- a/audio/aidl/vts/VtsHalAudioEffectTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAudioEffectTargetTest.cpp
@@ -396,7 +396,7 @@
 TEST_P(AudioEffectTest, VerifyCommonParametersAfterOpen) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon();
+    Parameter::Common common = createParamCommon();
     IEffect::OpenEffectReturn ret;
     ASSERT_NO_FATAL_FAILURE(open(mEffect, common, std::nullopt /* specific */, &ret, EX_NONE));
 
@@ -416,8 +416,8 @@
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
-            0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */);
+    Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
+                                                 44100 /* iSampleRate */, 44100 /* oSampleRate */);
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::common);
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
 
@@ -432,8 +432,8 @@
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
     ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
-            0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */);
+    Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
+                                                 44100 /* iSampleRate */, 44100 /* oSampleRate */);
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::common);
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
 
@@ -451,8 +451,8 @@
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
     ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
-            0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */);
+    Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
+                                                 44100 /* iSampleRate */, 44100 /* oSampleRate */);
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::common);
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
 
@@ -467,8 +467,8 @@
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
     ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
-            0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */);
+    Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
+                                                 44100 /* iSampleRate */, 44100 /* oSampleRate */);
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::common);
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
 
@@ -486,8 +486,8 @@
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
     ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
-            0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */);
+    Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
+                                                 44100 /* iSampleRate */, 44100 /* oSampleRate */);
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::common);
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
 
@@ -621,7 +621,7 @@
 
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
+    Parameter::Common common = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
@@ -666,7 +666,7 @@
 TEST_P(AudioEffectDataPathTest, ConsumeDataInProcessingState) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
+    Parameter::Common common = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
@@ -700,7 +700,7 @@
 TEST_P(AudioEffectDataPathTest, ConsumeDataAfterRestart) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
+    Parameter::Common common = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
@@ -744,7 +744,7 @@
 
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
+    Parameter::Common common = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
@@ -797,7 +797,7 @@
 TEST_P(AudioEffectDataPathTest, SendDataAtIdleAndConsumeDataInProcessing) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
+    Parameter::Common common = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
@@ -831,7 +831,7 @@
 TEST_P(AudioEffectDataPathTest, ProcessDataMultipleTimes) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
+    Parameter::Common common = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
@@ -871,7 +871,7 @@
 TEST_P(AudioEffectDataPathTest, ConsumeDataAndRestart) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
+    Parameter::Common common = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
@@ -913,7 +913,7 @@
 TEST_P(AudioEffectDataPathTest, NotConsumeDataByClosedEffect) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
 
-    Parameter::Common common = EffectHelper::createParamCommon(
+    Parameter::Common common = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
@@ -942,10 +942,10 @@
     ASSERT_NO_FATAL_FAILURE(create(mFactory, effect1, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(create(mFactory, effect2, mDescriptor));
 
-    Parameter::Common common1 = EffectHelper::createParamCommon(
+    Parameter::Common common1 = createParamCommon(
             0 /* session */, 1 /* ioHandle */, 44100 /* iSampleRate */, 44100 /* oSampleRate */,
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
-    Parameter::Common common2 = EffectHelper::createParamCommon(
+    Parameter::Common common2 = createParamCommon(
             1 /* session */, 1 /* ioHandle */, 48000 /* iSampleRate */, 48000 /* oSampleRate */,
             2 * kInputFrameCount /* iFrameCount */, 2 * kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret1, ret2;