Speech enhancement in transient noise environment using diffusion filtering

Recently, we have presented a transient noise reduction algorithm for speech signals that relies on non-local diffusion filtering. By exploiting the repetitive nature of transient noises we proposed a simple and efficient algorithm, which enabled suppression of various noise types. In this paper, we incorporate a modified diffusion operator in order to obtain a more robust algorithm and further enhancement of the speech. We demonstrate the performance of the modified algorithm and compare it with a competing solution. We show that the proposed algorithm enables improved suppression of various transient interferences without any further computational burden.