# A Unified Speech Enhancement System Based on Neural Beamforming With Parabolic Reflector
## 3 Experiment and Results
### Results
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & \(-18\) dB & \(1.164\) & \(0.887\) & \(1.159\) & \(0.806\) & \(1.070\) & \(1.379\) & \(\mathbf{1.693}\) \\  & \(-13\) dB & \(1.201\) & \(1.179\) & \(1.272\) & \(0.997\) & \(1.358\) & \(1.601\) & \(\mathbf{2.252}\) \\ PESQ & \(-8\) dB & \(1.232\) & \(1.517\) & \(1.555\) & \(1.443\) & \(1.852\) & \(1.881\) & \(\mathbf{2.690}\) \\  & \(-3\) dB & \(1.401\) & \(1.887\) & \(1.797\) & \(1.771\) & \(2.135\) & \(2.124\) & \(\mathbf{3.009}\) \\  & \(2\) dB & \(1.718\) & \(2.249\) & \(2.101\) & \(2.212\) & \(2.532\) & \(2.437\) & \(\mathbf{3.287}\) \\  & \(7\) dB & \(1.964\) & \(2.632\) & \(2.388\) & \(2.565\) & \(2.831\) & \(2.752\) & \(\mathbf{3.519}\) \\ \hline  & \(-18\) dB & \(-23.880\) & \(-17.140\) & \(-9.502\) & \(-3.233\) & \(-2.586\) & \(-13.094\) & \(\mathbf{0.644}\) \\  & \(-13\) dB & \(-18.862\) & \(-12.072\) & \(-5.819\) & \(-1.540\) & \(-0.926\) & \(-8.095\) & \(\mathbf{0.764}\) \\ fwSegSNR & \(-8\) dB & \(-13.869\) & \(-7.168\) & \(-3.177\) & \(-0.201\) & \(0.584\) & \(-3.092\) & \(\mathbf{0.819}\) \\  & \(-3\) dB & \(-8.825\) & \(-2.178\) & \(-0.098\) & \(2.268\) & \(1.426\) & \(\mathbf{1.917}\) & \(1.249\) \\  & \(2\) dB & \(-3.860\) & \(2.688\) & \(3.073\) & \(4.597\) & \(1.697\) & \(\mathbf{6.908}\) & \(1.264\) \\  & \(7\) dB & \(1.161\) & \(7.455\) & \(6.896\) & \(6.782\) & \(2.432\) & \(\mathbf{11.936}\) & \(1.398\) \\ \hline  & \multicolumn{10}{c}{**Babble noise and speech interference**} \\ \hline
**Measure** & **SNR** & **Noisy** & **DSB** & **IRM-F** & **CIRM-F** & **IRM-BF** & **PR** & **PR-IRM-BF** \\ \hline  & \(-18\) dB & \(0.352\) & \(0.362\) & \(0.389\) & \(0.323\) & \(0.381\) & \(0.510\) & \(\mathbf{0.656}\) \\  & \(-13\) dB & \(0.409\) & \(0.447\) & \(0.492\) & \(0.362\) & \(0.484\) & \(0.643\) & \(\mathbf{0.779}\) \\ STOI & \(-8\) dB & \(0.490\) & \(0.543\) & \(0.618\) & \(0.511\) & \(0.631\) & \(0.768\) & \(\mathbf{0.863}\) \\  & \(-3\) dB & \(0.594\) & \(0.641\) & \(0.726\) & \(0.656\) & \(0.767\) & \(0.867\) & \(\mathbf{0.909}\) \\  & \(2\) dB & \(0.719\) & \(0.731\) & \(0.829\) & \(0.801\) & \(0.865\) & \(\mathbf{0.938}\) & \(0.936\) \\  & \(7\) dB & \(0.828\) & \(0.801\) & \(0.896\) & \(0.884\) & \(0.903\) & \(\mathbf{0.973}\) & \(0.946\) \\ \hline  & \(-18\) dB & \(1.013\) & \(0.780\) & \(1.116\) & \(1.044\) & \(1.084\) & \(1.361\) & \(\mathbf{1.581}\) \\  & \(-13\) dB & \(1.106\) & \(0.991\) & \(1.168\) & \(1.063\) & \(1.134\) & \(1.651\) & \(\mathbf{2.084}\) \\ PESQ & \(-8\) dB & \(1.165\) & \(1.296\) & \(1.429\) & \(1.278\) & \(1.513\) & \(1.926\) & \(\mathbf{2.546}\) \\  & \(-3\) dB & \(1.412\) & \(1.646\) & \(1.724\) & \(1.693\) & \(1.968\) & \(2.214\) & \(\mathbf{2.906}\) \\  & \(2\) dB & \(1.747\) & \(2.020\) & \(2.097\) & \(2.071\) & \(2.452\) & \(2.558\) & \(\mathbf{3.218}\) \\  & \(7\) dB & \(2.052\) & \(2.430\) & \(2.382\) & \(2.474\) & \(2.701\) & \(2.895\) & \(\mathbf{3.447}\) \\ \hline  & \multicolumn{10}{c}{**Factory noise and speech interference**} \\ \hline
**Measure** & **SNR** & **Noisy** & **DSB** & **IRM-F** & **CIRM-F** & **IRM-BF** & **PR** & **PR-IRM-BF** \\ \hline  & \(-18\) dB & \(0.375\) & \(0.382\) & \(0.387\) & \(0.334\) & \(0.382\) & \(0.531\) & \(\mathbf{0.658}\) \\  & \(-13\) dB & \(0.423\) & \(0.469\) & \(0.494\) & \(0.375\) & \(0.482\) & \(0.653\) & \(\mathbf{0.781}\) \\ STOI & \(-8\) dB & \(0.493\) & \(0.569\) & \(0.624\) & \(0.521\) & \(0.649\) & \(0.771\) & \(\mathbf{0.863}\) \\  & \(-3\) dB & \(0.611\) & \(0.662\) & \(0.746\) & \(0.676\) & \(0.790\) & \(0.875\) & \(\mathbf{0.912}\) \\  & \(2\) dB & \(0.729\) & \(0.731\) & \(0.825\) & \(0.798\) & \(0.855\) & \(\mathbf{0.939}\) & \(0.929\) \\  & \(7\) dB & \(0.833\) & \(0.773\) & \(0.896\) & \(0.878\) & \(0.899\) & \(\mathbf{0.974}\) & \(0.944\) \\ \hline  & \(-18\) dB & \(1.027\) & \(0.736\) & \(1.106\) & \(1.097\) & \(1.081\) & \(1.333\) & \(\mathbf{1.628}\) \\  & \(-13\) dB & \(1.069\) & \(0.998\) & \(1.142\) & \(1.111\) & \(1.083\) & \(1.599\) & \(\mathbf{2.077}\) \\ PESQ & \(-8\) dB & \(1.228\) & \(1.318\) & \(1.430\) & \(1.373\) & \(1.631\) & \(1.844\) &From the above analysis, the two isolated systems (PR, IRM-BF) have their own shortcomings when addressing serious noises.