diff --git a/audio/aidl/vts/EffectHelper.h b/audio/aidl/vts/EffectHelper.h
index 0fdf7a7..72a4667 100644
--- a/audio/aidl/vts/EffectHelper.h
+++ b/audio/aidl/vts/EffectHelper.h
@@ -18,6 +18,7 @@
 
 #include <algorithm>
 #include <memory>
+#include <optional>
 #include <string>
 #include <type_traits>
 #include <unordered_map>
@@ -42,13 +43,18 @@
 using namespace android;
 using aidl::android::hardware::audio::effect::CommandId;
 using aidl::android::hardware::audio::effect::Descriptor;
+using aidl::android::hardware::audio::effect::getEffectTypeUuidSpatializer;
+using aidl::android::hardware::audio::effect::getRange;
 using aidl::android::hardware::audio::effect::IEffect;
+using aidl::android::hardware::audio::effect::isRangeValid;
+using aidl::android::hardware::audio::effect::kEffectTypeUuidSpatializer;
 using aidl::android::hardware::audio::effect::kEventFlagDataMqNotEmpty;
 using aidl::android::hardware::audio::effect::kEventFlagDataMqUpdate;
 using aidl::android::hardware::audio::effect::kEventFlagNotEmpty;
 using aidl::android::hardware::audio::effect::kReopenSupportedVersion;
 using aidl::android::hardware::audio::effect::Parameter;
 using aidl::android::hardware::audio::effect::Range;
+using aidl::android::hardware::audio::effect::Spatializer;
 using aidl::android::hardware::audio::effect::State;
 using aidl::android::hardware::common::fmq::SynchronizedReadWrite;
 using aidl::android::media::audio::common::AudioChannelLayout;
@@ -79,14 +85,16 @@
 
 class EffectHelper {
   public:
-    static void create(std::shared_ptr<IFactory> factory, std::shared_ptr<IEffect>& effect,
-                       Descriptor& desc, binder_status_t status = EX_NONE) {
+    void create(std::shared_ptr<IFactory> factory, std::shared_ptr<IEffect>& effect,
+                Descriptor& desc, binder_status_t status = EX_NONE) {
         ASSERT_NE(factory, nullptr);
         auto& id = desc.common.id;
         ASSERT_STATUS(status, factory->createEffect(id.uuid, &effect));
         if (status == EX_NONE) {
             ASSERT_NE(effect, nullptr) << toString(id.uuid);
         }
+        mIsSpatializer = id.type == getEffectTypeUuidSpatializer();
+        mDescriptor = desc;
     }
 
     static void destroyIgnoreRet(std::shared_ptr<IFactory> factory,
@@ -110,10 +118,9 @@
         ASSERT_STATUS(status, effect->open(common, specific, ret));
     }
 
-    static void open(std::shared_ptr<IEffect> effect, int session = 0,
-                     binder_status_t status = EX_NONE) {
+    void open(std::shared_ptr<IEffect> effect, int session = 0, binder_status_t status = EX_NONE) {
         ASSERT_NE(effect, nullptr);
-        Parameter::Common common = EffectHelper::createParamCommon(session);
+        Parameter::Common common = createParamCommon(session);
         IEffect::OpenEffectReturn ret;
         ASSERT_NO_FATAL_FAILURE(open(effect, common, std::nullopt /* specific */, &ret, status));
     }
@@ -207,15 +214,31 @@
                                                true /* retry */));
         EXPECT_TRUE(efState & kEventFlagDataMqUpdate);
     }
-    static Parameter::Common createParamCommon(
-            int session = 0, int ioHandle = -1, int iSampleRate = 48000, int oSampleRate = 48000,
-            long iFrameCount = 0x100, long oFrameCount = 0x100,
-            AudioChannelLayout inputChannelLayout =
-                    AudioChannelLayout::make<AudioChannelLayout::layoutMask>(
-                            AudioChannelLayout::LAYOUT_STEREO),
-            AudioChannelLayout outputChannelLayout =
-                    AudioChannelLayout::make<AudioChannelLayout::layoutMask>(
-                            AudioChannelLayout::LAYOUT_STEREO)) {
+
+    Parameter::Common createParamCommon(int session = 0, int ioHandle = -1, int iSampleRate = 48000,
+                                        int oSampleRate = 48000, long iFrameCount = 0x100,
+                                        long oFrameCount = 0x100) {
+        AudioChannelLayout defaultLayout = AudioChannelLayout::make<AudioChannelLayout::layoutMask>(
+                AudioChannelLayout::LAYOUT_STEREO);
+        // query supported input layout and use it as the default parameter in common
+        if (mIsSpatializer && isRangeValid<Range::spatializer>(Spatializer::supportedChannelLayout,
+                                                               mDescriptor.capability)) {
+            const auto layoutRange = getRange<Range::spatializer, Range::SpatializerRange>(
+                    mDescriptor.capability, Spatializer::supportedChannelLayout);
+            if (std::vector<AudioChannelLayout> layouts;
+                layoutRange &&
+                0 != (layouts = layoutRange->min.get<Spatializer::supportedChannelLayout>())
+                                .size()) {
+                defaultLayout = layouts[0];
+            }
+        }
+        return createParamCommon(session, ioHandle, iSampleRate, oSampleRate, iFrameCount,
+                                 oFrameCount, defaultLayout, defaultLayout);
+    }
+    static Parameter::Common createParamCommon(int session, int ioHandle, int iSampleRate,
+                                               int oSampleRate, long iFrameCount, long oFrameCount,
+                                               AudioChannelLayout inputChannelLayout,
+                                               AudioChannelLayout outputChannelLayout) {
         Parameter::Common common;
         common.session = session;
         common.ioHandle = ioHandle;
@@ -379,4 +402,7 @@
 
         return bufferMag;
     }
+
+    bool mIsSpatializer;
+    Descriptor mDescriptor;
 };