Improved Noise Reduction with Packet Loss Recovery Based on Post-Filtering over IP Networks
Jeongchang Kim, H. LEE, Won Ryu, Seung Seog Han, Minsoo Hahn · IEICE Transactions on Communications · 2008
This letter mainly focuses on improving current noise reduction methods to solve the critical speech distortion problems with robust noise reduction in noisy speech signals for speech enhancement over IP networks. For robust noise reduction with packet loss recovery, we propose a novel optimized Wiener filtering technique that uses the estimated SNR (Signal-to-Noise Ratio) with packet loss recovery method which is applied as post-filtering over IP-networks. Simulation results demonstrate that the proposed scheme provides better reduction and recovery rates with considering packet loss and SNR environment than other methods.