Title :
An improved soft threshold method for DCT speech enhancement
Author :
Ngoc Le, Phu ; Ambikairajah, Eliathamby ; Choi, Eric
Author_Institution :
Sch. of Electr. Eng. & Telecommun., The New South Wales Univ., Sydney, NSW
Abstract :
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.
Keywords :
discrete cosine transforms; speech enhancement; DCT domain; discrete cosine transform; noise-dominant frames; signal-dominant frames; soft threshold method; speech enhancement; Additive white noise; Australia; Availability; Background noise; Communications technology; Discrete cosine transforms; Fourier transforms; Gaussian noise; Signal processing; Speech enhancement; DCT; soft threshold; speech enhancement;
Conference_Titel :
Communications and Electronics, 2008. ICCE 2008. Second International Conference on
Conference_Location :
Hoi an
Print_ISBN :
978-1-4244-2425-2
Electronic_ISBN :
978-1-4244-2426-9
DOI :
10.1109/CCE.2008.4578970
