diff --git a/core/CMakeLists.txt b/core/CMakeLists.txt
index d22af90..d65283a 100644
--- a/core/CMakeLists.txt
+++ b/core/CMakeLists.txt
@@ -12,6 +12,7 @@ target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 target_link_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 target_link_libraries(${PROJECT_NAME} PUBLIC rtaudio spdlog mempool Taskflow glfw)
 
+option(USE_DOUBLE_SAMPLE "Use double sample" OFF)
 add_definitions(-Dcore_EXPORTS)
 
 if (MSVC)
@@ -36,4 +37,10 @@ if (CMAKE_BUILD_TYPE MATCHES "Debug")
     target_compile_definitions(${PROJECT_NAME} PUBLIC BUILD_DEBUG=1)
 else()
     target_compile_definitions(${PROJECT_NAME} PUBLIC BUILD_DEBUG=0)
-endif()
\ No newline at end of file
+endif()
+
+if (USE_DOUBLE_SAMPLE)
+    target_compile_definitions(${PROJECT_NAME} PUBLIC USE_DOUBLE_SAMPLE=1)
+else()
+    target_compile_definitions(${PROJECT_NAME} PUBLIC USE_DOUBLE_SAMPLE=0)
+endif ()
\ No newline at end of file
diff --git a/core/audio/device/audio_device_manager.cpp b/core/audio/device/audio_device_manager.cpp
index 32b41e4..077ade9 100644
--- a/core/audio/device/audio_device_manager.cpp
+++ b/core/audio/device/audio_device_manager.cpp
@@ -17,7 +17,7 @@ int rt_audio_callback(void* output_buffer, void *input_buffer,
                                 void* user_data)
 {
     auto* API = static_cast<audio_device_manager*>(user_data);
-    return API->stream_callback(static_cast<float*>(output_buffer), static_cast<float*>(input_buffer), frames_nums, stream_time, status);
+    return API->stream_callback(static_cast<sample_t*>(output_buffer), static_cast<sample_t*>(input_buffer), frames_nums, stream_time, status);
 }
 
 void audio_device_manager::init(singleton_initliazer& initliazer) {
@@ -47,7 +47,12 @@ void audio_device_manager::start() {
     log_current_device_info();
 
     options_.flags = RTAUDIO_NONINTERLEAVED;
-    auto err = audio_->openStream(&output_params_, input_params, RTAUDIO_FLOAT32, get_sample_rate(), &buffer_size_, &rt_audio_callback, this, &options_);
+#if USE_DOUBLE_SAMPLE
+    RtAudioFormat format = RTAUDIO_FLOAT64;
+#else
+    RtAudioFormat format = RTAUDIO_FLOAT32;
+#endif
+    auto err = audio_->openStream(&output_params_, input_params, format, get_sample_rate(), &buffer_size_, &rt_audio_callback, this, &options_);
     if (err != RTAUDIO_NO_ERROR) {
         spdlog::error("failed to open audio stream: {}", audio_->getErrorText());
         return;
@@ -86,7 +91,7 @@ uint32_t audio_device_manager::get_output_channel_count() const {
     return 2; // 现在是固定值, 以后可能会改
 }
 
-int audio_device_manager::stream_callback(float* output, float* input, unsigned long frame_count, double stream_time, RtAudioStreamStatus status) {
+int audio_device_manager::stream_callback(sample_t* output, sample_t* input, unsigned long frame_count, double stream_time, RtAudioStreamStatus status) {
     if (render_buffers_[0].Num() < frame_count) {
         // spdlog::warn("render buffer underflow: {}", render_buffers_[0].Num());
         return 0;
diff --git a/core/audio/device/audio_device_manager.h b/core/audio/device/audio_device_manager.h
index 018f426..8399b18 100644
--- a/core/audio/device/audio_device_manager.h
+++ b/core/audio/device/audio_device_manager.h
@@ -20,7 +20,7 @@ public:
     [[nodiscard]] CORE_API uint32_t get_input_channel_count() const;
     [[nodiscard]] CORE_API uint32_t get_output_channel_count() const;
 
-    int stream_callback(float* output, float* input, unsigned long frame_count, double stream_time, RtAudioStreamStatus status);
+    int stream_callback(sample_t* output, sample_t* input, unsigned long frame_count, double stream_time, RtAudioStreamStatus status);
     void log_all_devices();
     void log_current_device_info();
 protected:
@@ -29,7 +29,7 @@ protected:
     void stop_render_thread();
     void render_thread();
     std::thread render_thread_;
-    std::vector<circular_audio_buffer<float>> render_buffers_;
+    circular_buffer_vector_type render_buffers_;
     std::atomic_bool render_thread_running_ = false;
     std::atomic_bool render_thread_should_stop_ = false;
 #pragma endregion
diff --git a/core/audio/misc/audio_buffer.cpp b/core/audio/misc/audio_buffer.cpp
index 90e1aac..1fabee8 100644
--- a/core/audio/misc/audio_buffer.cpp
+++ b/core/audio/misc/audio_buffer.cpp
@@ -15,7 +15,7 @@ void audio_buffer::resize(uint32_t channel_num, uint32_t block_size) {
 void audio_buffer::clear() {
     std::scoped_lock lock(lock_);
     for (auto& channel : buffer_) {
-        std::memset(channel.data(), 0, channel.size() * sizeof(float));
+        std::memset(channel.data(), 0, channel.size() * sizeof(sample_t));
     }
 }
 
@@ -41,9 +41,9 @@ void audio_buffer::multiple(float percent) {
     }
 }
 
-std::vector<float> audio_buffer::get_interleaved_buffer() {
+std::vector<sample_t> audio_buffer::get_interleaved_buffer() {
     std::scoped_lock lock(lock_);
-    std::vector<float> result;
+    std::vector<sample_t> result;
     result.reserve(buffer_[0].size() * buffer_.size());
     for (uint32_t sample_index = 0; sample_index < buffer_[0].size(); sample_index++) {
         for (uint32_t channel_index = 0; channel_index < buffer_.size(); channel_index++) {
diff --git a/core/audio/misc/audio_buffer.h b/core/audio/misc/audio_buffer.h
index 45032f8..df0c96a 100644
--- a/core/audio/misc/audio_buffer.h
+++ b/core/audio/misc/audio_buffer.h
@@ -6,8 +6,8 @@
 
 class CORE_API audio_buffer {
 public:
-    float** get_headers() { return headers_.data(); }
-    const std::vector<float*>& get_headers_vector() { return headers_; }
+    sample_t** get_headers() { return headers_.data(); }
+    const std::vector<sample_t*>& get_headers_vector() { return headers_; }
 
     [[nodiscard]] uint32_t get_num_channels() const { return buffer_.size(); }
     [[nodiscard]] uint32_t get_num_samples() const { return buffer_[0].size(); }
@@ -18,9 +18,9 @@ public:
     void mix(audio_buffer& in_buffer, float percent = 1.f);
     void multiple(float percent);
 
-    [[nodiscard]] std::vector<float> get_interleaved_buffer();
+    [[nodiscard]] std::vector<sample_t> get_interleaved_buffer();
 private:
-    std::vector<std::vector<float>> buffer_;
-    std::vector<float*> headers_{};
+    std::vector<std::vector<sample_t>> buffer_;
+    std::vector<sample_t*> headers_{};
     std::mutex lock_{};
 };
diff --git a/core/audio/misc/circular_audio_buffer.h b/core/audio/misc/circular_audio_buffer.h
index 7c0e076..e429070 100644
--- a/core/audio/misc/circular_audio_buffer.h
+++ b/core/audio/misc/circular_audio_buffer.h
@@ -288,8 +288,8 @@ public:
     }
 };
 
-using ui_buffer_type = circular_audio_buffer<float>;
-using ui_buffer_vector_type = std::vector<ui_buffer_type>;
+using circular_buffer_type = circular_audio_buffer<sample_t>;
+using circular_buffer_vector_type = std::vector<circular_buffer_type>;
 
 #undef checkf
 #undef check
\ No newline at end of file
diff --git a/core/audio/mixer/channel_interface.h b/core/audio/mixer/channel_interface.h
index f03cddd..788f690 100644
--- a/core/audio/mixer/channel_interface.h
+++ b/core/audio/mixer/channel_interface.h
@@ -4,6 +4,8 @@
 #include <string>
 #include <vector>
 
+#include "extern.h"
+
 class mixer_track;
 class channel_node;
 
@@ -20,8 +22,8 @@ public:
     uint32_t get_input_node_index(channel_node* node);
     uint32_t get_output_node_index(channel_node* node);
 
-    float** get_input_headers() { return input_headers_.data(); }
-    float** get_output_headers() { return output_headers_.data(); }
+    sample_t** get_input_headers() { return input_headers_.data(); }
+    sample_t** get_output_headers() { return output_headers_.data(); }
 
     void set_input_channel_node_name(uint32_t node_index, uint32_t channel_index, const std::string& name);
     void set_output_channel_node_name(uint32_t node_index, uint32_t channel_index, const std::string& name);
@@ -37,8 +39,8 @@ public:
 private:
     std::map<uint32_t, std::map<uint32_t, std::string>> input_channel_names_;
     std::map<uint32_t, std::map<uint32_t, std::string>> output_channel_names_;
-    std::vector<float*> input_headers_;
-    std::vector<float*> output_headers_;
+    std::vector<sample_t*> input_headers_;
+    std::vector<sample_t*> output_headers_;
 };
 
 class mixer_channel_interface : public channel_interface {
diff --git a/core/audio/mixer/channel_node.cpp b/core/audio/mixer/channel_node.cpp
index 7be5565..0f5482a 100644
--- a/core/audio/mixer/channel_node.cpp
+++ b/core/audio/mixer/channel_node.cpp
@@ -13,6 +13,6 @@ mixer_channel_node::mixer_channel_node(channel_interface* in_owner, mixer_track*
     channel_headers_.push_back(headers[in_node_index * 2 + 1]);
 }
 
-const std::vector<float*>& null_channel_node::get_channel_headers() {
+const std::vector<sample_t*>& null_channel_node::get_channel_headers() {
     return g_mixer.zero_track->buffer.get_headers_vector();
 }
diff --git a/core/audio/mixer/channel_node.h b/core/audio/mixer/channel_node.h
index cbbaa49..af3d78f 100644
--- a/core/audio/mixer/channel_node.h
+++ b/core/audio/mixer/channel_node.h
@@ -2,6 +2,7 @@
 #include <cstdint>
 #include <string>
 #include <vector>
+#include "extern.h"
 
 class mixer_track;
 class channel_interface;
@@ -18,7 +19,7 @@ public:
 
     channel_node(channel_interface* in_owner, channel_node_type in_type) : owner(in_owner), type(in_type) {}
 
-    virtual const std::vector<float*>& get_channel_headers() = 0;
+    virtual const std::vector<sample_t*>& get_channel_headers() = 0;
     virtual std::string get_name() = 0;
 
     channel_interface* owner;
@@ -29,13 +30,13 @@ class mixer_channel_node : public channel_node {
 public:
     mixer_channel_node(channel_interface* in_owner, mixer_track* in_track, uint32_t in_node_index);
 
-    const std::vector<float*>& get_channel_headers() override { return channel_headers_; }
+    const std::vector<sample_t*>& get_channel_headers() override { return channel_headers_; }
     std::string get_name() override { return "MixerChannelNode"; }
 
     [[nodiscard]] mixer_track* get_track() const { return track_; }
 private:
     mixer_track* track_;
-    std::vector<float*> channel_headers_;
+    std::vector<sample_t*> channel_headers_;
     uint32_t node_index_;
 };
 
@@ -48,5 +49,5 @@ public:
     static null_channel_node* get() { return instance; }
     std::string get_name() override { return "NullChannelNode"; }
 
-    const std::vector<float*>& get_channel_headers() override;
+    const std::vector<sample_t*>& get_channel_headers() override;
 };
diff --git a/core/audio/mixer/mixer_track.cpp b/core/audio/mixer/mixer_track.cpp
index 3d8c8ae..4180ae9 100644
--- a/core/audio/mixer/mixer_track.cpp
+++ b/core/audio/mixer/mixer_track.cpp
@@ -57,7 +57,7 @@ void mixer_track::process(uint32_t in_frames) {
 void mixer_track::post_process(uint32_t in_frames) {
     buffer.multiple(get_volume());
     for (int i = 0; i < buffer.get_num_channels(); ++i) {
-        ui_buffer_type& ui_buffer = (*ui_buffers)[i];
+        auto& ui_buffer = (*ui_buffers)[i];
         ui_buffer.Push(buffer.get_headers()[i], in_frames);
     }
 }
diff --git a/core/audio/mixer/mixer_track.h b/core/audio/mixer/mixer_track.h
index ca55690..5c5fc16 100644
--- a/core/audio/mixer/mixer_track.h
+++ b/core/audio/mixer/mixer_track.h
@@ -21,7 +21,7 @@ struct mixer_track_link {
 class mixer_track {
 public:
     explicit mixer_track(mixer_track_type in_type) : type_(in_type) {
-        ui_buffers = std::make_shared<ui_buffer_vector_type>();
+        ui_buffers = std::make_shared<circular_buffer_vector_type>();
     }
     virtual ~mixer_track();
 
@@ -37,7 +37,7 @@ public:
     virtual void rename(const std::string& in_name) = 0;
     [[nodiscard]] virtual std::string get_name() const = 0;
 
-    [[nodiscard]] float** get_headers() { return buffer.get_headers(); }
+    [[nodiscard]] sample_t** get_headers() { return buffer.get_headers(); }
 
     [[nodiscard]] mixer_track_type get_type() const { return type_; }
 
@@ -47,7 +47,7 @@ public:
     [[nodiscard]] float get_volume() const { return volume; }
 
     audio_buffer buffer;
-    std::shared_ptr<ui_buffer_vector_type> ui_buffers;
+    std::shared_ptr<circular_buffer_vector_type> ui_buffers;
     std::vector<plugin_host*> effects{};
     std::vector<mixer_track_link> children{};
     multicast_delegate<mixer_track*> on_processed;
diff --git a/core/audio/plugin_host/plugin_host.cpp b/core/audio/plugin_host/plugin_host.cpp
index d1e2204..67761e5 100644
--- a/core/audio/plugin_host/plugin_host.cpp
+++ b/core/audio/plugin_host/plugin_host.cpp
@@ -9,10 +9,10 @@ plugin_host::~plugin_host() {
 
 void plugin_host::on_update_buffer_size(int buffer_size)
 {
-    ui_buffers = std::make_shared<ui_buffer_vector_type>();
+    ui_buffers = std::make_shared<circular_buffer_vector_type>();
     for (uint32_t i = 0; i < get_output_channels(); i++)
     {
-        ui_buffer_type buffer(buffer_size * 3);
+        circular_buffer_type buffer(buffer_size * 3);
         ui_buffers->emplace_back(std::move(buffer));
     }
 }
diff --git a/core/audio/plugin_host/plugin_host.h b/core/audio/plugin_host/plugin_host.h
index 744077a..b63d62c 100644
--- a/core/audio/plugin_host/plugin_host.h
+++ b/core/audio/plugin_host/plugin_host.h
@@ -47,7 +47,7 @@ public:
     channel_interface* channel = nullptr;
     std::vector<mixer_track*> owner_tracks;
     bool editor_opened = false;
-    std::shared_ptr<ui_buffer_vector_type> ui_buffers;
+    std::shared_ptr<circular_buffer_vector_type> ui_buffers;
 protected:
     void create_and_open_editor();
     void destroy_editor();
diff --git a/core/audio/plugin_host/vst2/vst2_plugin_host.cpp b/core/audio/plugin_host/vst2/vst2_plugin_host.cpp
index a477cd9..4176fc9 100644
--- a/core/audio/plugin_host/vst2/vst2_plugin_host.cpp
+++ b/core/audio/plugin_host/vst2/vst2_plugin_host.cpp
@@ -217,7 +217,12 @@ void vst2_plugin_host::update_channel_node_name() {
 
 void vst2_plugin_host::process(uint32_t frame_num) {
     // TODO send midi
+#if USE_DOUBLE_SAMPLE
+    effect_->processDoubleReplacing(effect_, channel->get_input_headers(), channel->get_output_headers(), frame_num);
+#else
     effect_->processReplacing(effect_, channel->get_input_headers(), channel->get_output_headers(), frame_num);
+#endif
+
     for (int i = 0; i < ui_buffers->size(); ++i)
     {
         ui_buffers->at(i).Push(channel->get_output_headers()[i], frame_num);
diff --git a/core/extern.h b/core/extern.h
index 93d09f5..63566a7 100644
--- a/core/extern.h
+++ b/core/extern.h
@@ -15,3 +15,9 @@
 #else
 	#error Unsupported platform
 #endif
+
+#if USE_DOUBLE_SAMPLE
+	typedef double sample_t;
+#else
+	typedef float sample_t;
+#endif