diff --git a/.gitignore b/.gitignore
index 658ea20..ea88596 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 __pycache__/
 
 # Distribution / packaging
+release/
 build/
 dist/
 dist_nuitka/
diff --git a/Zmq/filterProcess.py b/Zmq/filterProcess.py
index cc0971a..302df45 100644
--- a/Zmq/filterProcess.py
+++ b/Zmq/filterProcess.py
@@ -194,6 +194,8 @@ class SlidingFilter(threading.Thread):
         self._beta_step_counter = 0
         self._beta_steps_per_second = max(1, int(round(1.0 / step_sec)))  # 5
 
+        self.slide_window = None  # 滑动窗口缓存 (n_chan, window_size)
+        self.slide_ready = False  # 窗口是否已填满初始数据
         # 预计算滤波器系数（仅执行一次）
         self._init_filters()
 
@@ -238,42 +240,60 @@ class SlidingFilter(threading.Thread):
 
     def run(self):
         """线程主逻辑：精确200ms触发一次滤波"""
-        interval = self.step_sec  # 200ms = 0.2秒
-        next_run_time = time.perf_counter()
-        while self.running.is_set():
-            # 1. 精确定时等待
-            current_time = time.perf_counter()
-            if current_time < next_run_time:
-                time.sleep(next_run_time - current_time)
-                next_run_time += interval
-            else:
-                algo_log("滤波耗时超过200ms，定时偏移", level='debug')
-                next_run_time = time.perf_counter() + interval
+        interval = self.step_sec  # 0.2s
+        # 以启动时刻为绝对时间基准（核心改动）
+        base_time = time.perf_counter()
+        frame_count = 0  # 帧计数器，用于对齐时序
 
-            # ========== 新增核心判断：无新数据则直接跳过 ==========
+        while self.running.is_set():
+            # 计算理论执行时刻：严格按帧序号 × 步长
+            expect_time = base_time + frame_count * interval
+            current_time = time.perf_counter()
+
+            # 精确定时等待
+            if current_time < expect_time:
+                time.sleep(expect_time - current_time)
+            else:
+                # 处理超时：仅告警，不重置基准（防止累积偏移）
+                algo_log(f"滤波任务超时，偏移 {(current_time - expect_time)*1000:.1f} ms", level='debug')
+            
+            frame_count += 1  # 帧序号自增，保证周期绝对稳定
             if not self.ring_buffer.check_and_clear_new_data():
                 # 无新数据，不执行滤波、不发送数据
                 continue
-
-            # 2. 有新数据，才执行原有滤波逻辑
+            
+            # ========== 原有滤波逻辑 ==========
             try:
-                window_data = self.ring_buffer.get_latest_n_points(self.window_size)
-                if window_data is None:
-                    algo_log(f"缓存数据不足，当前缓存{self.ring_buffer.GetDataLenCount()}点，需{self.window_size}点", level='debug')
-                    continue
+                if not self.slide_ready:
+                    # 阶段1：首次填满3s初始窗口
+                    full_data = self.ring_buffer.get_latest_n_points(self.window_size)
+                    if full_data is None:
+                        algo_log("初始窗口数据不足", level='debug')
+                        continue
+                    self.slide_window = full_data
+                    self.slide_ready = True
+                else:
+                    # 阶段2：正常滑动 → 取最新50个新点，增量拼接
+                    new_step_data = self.ring_buffer.get_latest_n_points(self.step_size)
+                    if new_step_data is None:
+                        algo_log("滑动步长数据不足", level='debug')
+                        continue
+                    # 增量滑动：丢弃前50点，拼接新50点（标准滑动窗口）
+                    self.slide_window = np.hstack([
+                        self.slide_window[:, self.step_size:],
+                        new_step_data
+                    ])
                 
-                filtered_data, filtered_full = self._filter_window_data(window_data)
-                # algo_log(f"滤波后{filtered_data.shape}数据", level='debug')
+                filtered_data, filtered_full = self._filter_window_data(self.slide_window[:64, :])
 
-                # ========== beta_psd 每秒计算一次（Fp1/Fp2，通道索引 0/1）==========
+                # Beta PSD 每秒计算一次
                 self._beta_step_counter += 1
                 if self._beta_step_counter >= self._beta_steps_per_second:
                     self._beta_step_counter = 0
-                    # 仅推送数据到队列，不阻塞等待计算完成
-                    self._beta_thread.push_data(filtered_full[:2, :].copy())
+                    self._beta_thread.push_data(filtered_full[:2, :])
 
                 if self.filter_result_callback is not None:
-                    self.filter_result_callback(filtered_data[:64, :])
+                    self.filter_result_callback(filtered_data)
             except Exception as e:
                 algo_log(f"滤波执行异常: {e}", level='error')
 
diff --git a/release/runDecoder.dist_v0.0.0_beta_20260611.7z b/release/runDecoder.dist_v0.0.0_beta_20260611.7z
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diff --git a/release/脑电范式算法库zmq接口说明_v1.docx b/release/脑电范式算法库zmq接口说明_v1.docx
deleted file mode 100644
index 5a5f4c0..0000000
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