Differences Amplitude Based Improvement of Minimum Variance Distortionless Response Filter

2020 International journal of recent technology and engineering  
In this work, the author introduces a new technique for improving the performance of minimum variance distortionless response filter in condition of coherent noise. The proposal algorithm exploits a priori information of differences amplitude to balance power spectral densities of observed noisy signals. The output signal of MVDR filter is then processed by an additional post-filtering, which based speech presence probability to suppress more noise interference and increase quality speech. In
more » ... uality speech. In experiments using two noisy signal recordings in anechoeic room, the modified MVDR-filter results provides that the suggested algorithm increases speech quality compared to the conventional MVDR filter.
doi:10.35940/ijrte.e6151.018520 fatcat:dmcwkbjsyzbj3j7jtl4etbteua