diff --git a/model/.DS_Store b/model/.DS_Store
deleted file mode 100644
index 4deda79..0000000
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diff --git a/model/README b/model/README
deleted file mode 100644
index 0b5d9e5..0000000
--- a/model/README
+++ /dev/null
@@ -1,6 +0,0 @@
-Chinese Vosk model for mobile
-
-CER results
-
-23.54% speechio_02
-38.29% speechio_06
diff --git a/model/am/final.mdl b/model/am/final.mdl
deleted file mode 100644
index f7cf1de..0000000
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diff --git a/model/conf/mfcc.conf b/model/conf/mfcc.conf
deleted file mode 100644
index 12fdad4..0000000
--- a/model/conf/mfcc.conf
+++ /dev/null
@@ -1,8 +0,0 @@
---use-energy=false
---sample-frequency=16000
---num-mel-bins=40
---num-ceps=40
---low-freq=40
---high-freq=-200
---allow-upsample=true
---allow-downsample=true
diff --git a/model/conf/model.conf b/model/conf/model.conf
deleted file mode 100644
index 9ae12a7..0000000
--- a/model/conf/model.conf
+++ /dev/null
@@ -1,10 +0,0 @@
---min-active=200
---max-active=5000
---beam=12.0
---lattice-beam=4.0
---acoustic-scale=1.0
---frame-subsampling-factor=3
---endpoint.silence-phones=1:2:3:4:5:6:7:8:9:10
---endpoint.rule2.min-trailing-silence=0.5
---endpoint.rule3.min-trailing-silence=1.0
---endpoint.rule4.min-trailing-silence=2.0
diff --git a/model/graph/Gr.fst b/model/graph/Gr.fst
deleted file mode 100644
index ee4580d..0000000
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diff --git a/model/graph/HCLr.fst b/model/graph/HCLr.fst
deleted file mode 100644
index 2ad6e8f..0000000
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diff --git a/model/graph/disambig_tid.int b/model/graph/disambig_tid.int
deleted file mode 100644
index c1a114f..0000000
--- a/model/graph/disambig_tid.int
+++ /dev/null
@@ -1,39 +0,0 @@
-11845
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-11883
diff --git a/model/graph/phones/word_boundary.int b/model/graph/phones/word_boundary.int
deleted file mode 100644
index 9f3713e..0000000
--- a/model/graph/phones/word_boundary.int
+++ /dev/null
@@ -1,646 +0,0 @@
-1 nonword
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diff --git a/model/ivector/final.dubm b/model/ivector/final.dubm
deleted file mode 100644
index bcf2689..0000000
Binary files a/model/ivector/final.dubm and /dev/null differ
diff --git a/model/ivector/final.ie b/model/ivector/final.ie
deleted file mode 100644
index e1d78a2..0000000
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diff --git a/model/ivector/final.mat b/model/ivector/final.mat
deleted file mode 100644
index 1093236..0000000
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diff --git a/model/ivector/global_cmvn.stats b/model/ivector/global_cmvn.stats
deleted file mode 100644
index 500cc40..0000000
--- a/model/ivector/global_cmvn.stats
+++ /dev/null
@@ -1,3 +0,0 @@
- [
-  1.117107e+11 -7.827721e+08 -1.101398e+10 -2.193934e+09 -1.347332e+10 -1.613916e+10 -1.199561e+10 -1.255081e+10 -1.638895e+10 -3.821099e+09 -1.372833e+10 -5.244242e+09 -1.098187e+10 -3.655235e+09 -9.364579e+09 -4.285302e+09 -6.296873e+09 -1.552953e+09 -3.176746e+09 -1.202976e+08 -9.857023e+08 2.316555e+08 -1.61059e+08 -5.891868e+07 3.465849e+08 -1.842054e+08 3.248211e+08 -1.483965e+08 3.739239e+08 -6.672061e+08 4.442288e+08 -9.274889e+08 5.142684e+08 4.292036e+07 2.206386e+08 -4.532715e+08 -2.092499e+08 -3.70488e+08 -8.079404e+07 -8.425977e+07 1.344125e+09 
-  9.982632e+12 1.02635e+12 8.634624e+11 9.06451e+11 9.652096e+11 1.12772e+12 9.468372e+11 9.141218e+11 9.670484e+11 6.936961e+11 8.141006e+11 6.256321e+11 6.087707e+11 4.616898e+11 4.212042e+11 2.862872e+11 2.498089e+11 1.470856e+11 1.099197e+11 5.780894e+10 3.118114e+10 1.060667e+10 1.466199e+09 4.173056e+08 5.257362e+09 1.277714e+10 2.114478e+10 2.974502e+10 3.587691e+10 4.078971e+10 4.247745e+10 4.382608e+10 4.62521e+10 4.575282e+10 3.546206e+10 3.041531e+10 2.838562e+10 2.258604e+10 1.715295e+10 1.303227e+10 0 ]
diff --git a/model/ivector/online_cmvn.conf b/model/ivector/online_cmvn.conf
deleted file mode 100644
index e69de29..0000000
diff --git a/model/ivector/splice.conf b/model/ivector/splice.conf
deleted file mode 100644
index 960cd2e..0000000
--- a/model/ivector/splice.conf
+++ /dev/null
@@ -1,2 +0,0 @@
---left-context=3
---right-context=3
diff --git a/recorder.py b/recorder.py
index ded2d44..20db916 100644
--- a/recorder.py
+++ b/recorder.py
@@ -21,7 +21,7 @@ class EnergyBasedRecorder:
         # 音频参数 - 极简优化
         self.FORMAT = pyaudio.paInt16
         self.CHANNELS = 1
-        self.RATE = 8000  # 8kHz采样率
+        self.RATE = 16000  # 16kHz采样率
         self.CHUNK_SIZE = 1024  # 适中块大小
         
         # 能量检测参数
@@ -133,9 +133,9 @@ class EnergyBasedRecorder:
     
     def is_voice_active_advanced(self, energy, zcr):
         """仅使用ZCR进行语音活动检测"""
-        # ZCR语音检测：提高到1200-6000 Hz之间，更好地区分语音和环境噪音
-        # 说话时ZCR会比较稳定在这个范围内
-        zcr_condition = 1200 < zcr < 6000
+        # ZCR语音检测：调整到2400-12000 Hz之间，适应16000Hz采样率
+        # 16000Hz采样率时，正常语音的ZCR范围会翻倍
+        zcr_condition = 2400 < zcr < 12000
         
         # 添加一些容错，避免短暂的ZCR波动导致误判
         return zcr_condition
@@ -160,6 +160,11 @@ class EnergyBasedRecorder:
                 wf.writeframes(audio_data)
             
             print(f"✅ 录音已保存: {filename}")
+            print(f"📊 音频格式参数:")
+            print(f"   - 采样率: {self.RATE} Hz")
+            print(f"   - 声道数: {self.CHANNELS}")
+            print(f"   - 位深度: {self.audio.get_sample_size(self.FORMAT) * 8} bits")
+            print(f"   - 格式: PCM int16 小端序")
             return True, filename
         except Exception as e:
             print(f"❌ 保存录音失败: {e}")
@@ -425,7 +430,7 @@ class EnergyBasedRecorder:
         print("- 连续低ZCR计数（20次=2秒）")
         print("- ZCR活动历史追踪")
         print("- 基于ZCR模式的静音验证")
-        print("- 语音范围: 1200-6000 Hz (提高阈值)")
+        print("- 语音范围: 2400-12000 Hz (适应16kHz采样率)")
         print("=" * 50)
         
         try:
@@ -467,7 +472,7 @@ class EnergyBasedRecorder:
                         self.consecutive_silence_count += 1  # 增加静音计数
                     
                     # 更新ZCR活动历史（基于ZCR是否在语音范围内）
-                    self.voice_activity_history.append(1200 < zcr < 6000)
+                    self.voice_activity_history.append(2400 < zcr < 12000)
                     if len(self.voice_activity_history) > self.max_voice_history:
                         self.voice_activity_history.pop(0)