图共 7个 表共 6
    • 图  1  实验拓扑图

      Figure 1. 

    • 图  2  隐藏算法实现框图

      Figure 2. 

    • 图  3  载密语音与未载密语音对比图

      Figure 3. 

    • 图  4  时长为3 s样本的PESQ值对比

      Figure 4. 

    • 图  5  时长为10 s样本的PESQ值对比

      Figure 5. 

    • 图  6  压缩语音码流在不同样本时长下的平均检测率

      Figure 6. 

    • 图  7  压缩语音码流在不同嵌入率下的平均检测率

      Figure 7. 

    • 处理器内存声卡系统
      Intel(R) Core(TM) i5-4590 CPU @ 3.30 GHz4 GBRealtek High Definition AudioWindows 7专业版 Service Pack 1

      表 1  发送方、接收方台式PC配置情况

    • 载密语音样本未载密语音样本PESQ改变率(%)
      3 s语音样本
      CSMCSWESMESWCSMCSWESMESWCSMCSWESMESW
      平均值3.42373.34403.41653.47503.44293.39953.42593.5193–0.55–1.63–0.27–1.20
      最大值3.89993.78154.09954.10153.82623.74063.88633.94581.931.095.493.94
      最小值2.97562.96152.97562.90223.09303.17013.11603.1265–3.80–6.58–4.51–7.17
      10 s语音样本
      CSMCSWESMESWCSMCSWESMESWCSMCSWESMESW
      平均值3.40953.35283.39903.38223.42183.39003.41023.4362–0.37–1.09–0.33–1.50
      最大值3.79543.71023.76143.87143.74063.67833.74063.86321.470.872.120.21
      最小值2.99652.91133.10032.99653.05903.01803.11233.0590–2.00–3.53–1.20–2.00

      表 2  本文隐藏算法的PESQ统计值

    • 隐藏算法3 s语音样本10 s语音样本
      CSMCSWESMESW均值CSMCSWESMESW均值
      文献[6]隐藏算法–0.49–1.05–0.93–1.37–0.96–0.62–1.44–0.29–1.22–0.89
      文献[10]隐藏算法–0.59–1.63–0.28–1.35–0.96–0.52–1.42–0.35–1.47–0.94
      本文隐藏算法–0.55–1.63–0.27–1.20–0.91–0.37–1.09–0.33–1.50–0.82

      表 3  隐藏算法的PESQ统计对比(%)

    • 隐藏算法CSMCSWESMESW均值
      文献[6]隐藏算法7.438.488.248.948.27
      文献[10]隐藏算法 7.02 7.96 7.89 8.74 7.90
      本文隐藏算法6.677.647.558.327.56

      表 4  语音帧处理时间统计对比(ms)

    • 隐藏方法语音种类样本时长(s)
      0.10.20.30.40.50.60.70.80.91.02.03.04.05.06.0
      文献[10]隐藏算法英文85.4088.0088.5089.2590.1091.4591.4092.4092.9593.7096.2096.9597.1597.6597.35
      中文86.8088.6590.2090.5091.2092.2593.1094.2594.7094.0596.8097.2098.1597.7597.95
      文献[11]隐藏算法英文87.6590.1190.8191.6592.8994.0094.1595.0195.2096.6497.2098.70100.00100.00100.00
      中文90.7092.9594.0094.5595.7996.8397.1698.2298.3098.8999.1699.99100.00100.00100.00
      本文隐藏算法英文43.2046.4346.9547.3348.3949.5149.4450.3651.6451.9354.6755.6855.9256.0455.94
      中文45.5146.9147.5647.4848.7249.7049.5352.1452.3752.8755.0655.8656.0956.3555.63

      表 5  在满嵌入率下两种隐藏算法检测率(%)

    • 隐藏方法语音种类嵌入率(%)
      102030405060708090100
      文献[10]隐藏算法英文50.6157.6475.5380.2982.8185.6386.3590.5894.3297.35
      中文51.9358.4975.2880.5682.4985.2787.9292.5695.6397.95
      文献[11]隐藏算法英文53.9460.8978.6683.4985.9188.6989.3593.7497.25100.00
      中文54.5361.6779.5584.8886.7789.5591.8395.6698.55100.00
      本文隐藏算法英文16.3217.5230.8739.4841.1644.1545.6248.1252.6155.94
      中文15.2217.3530.5639.5241.7444.1644.5949.3152.3855.63

      表 6  在不同嵌入率下3种隐藏算法检测率(%)