An improved soft threshold method for DCT speech enhancement
Phu Ngoc Le, Eliathamby Ambikairajah, Eric H. C. Choi · 2008
An improved soft threshold method for speech enhancement in the Discrete Cosine Transform (DCT) domain is proposed in this paper. Rather than apply a threshold only to noise-dominant frames, as per traditional DCT-based approaches, our proposed approach also applies the threshold process appropriately in signal-dominant frames. Experimental results show a quality improvement with our proposed method compared to traditional soft threshold methods.