Title :
Noise estimation based on series expansion of orthogonal functions
Author :
Akasaka, Taiji ; Shimamura, Tetsuya
Author_Institution :
Grad. Sch. of Sci. & Eng., Saitama Univ., Saitama, Japan
Abstract :
In this paper, noise estimation based on series expansion of orthogonal functions is proposed. The proposed method searches speechless frequency regions and estimates the noise spectrum from the searched speechless frequency regions. The proposed method can adapt to changing of noise power without estimation delay. Experimental results show that the proposed method provides a good performance against time-varying noise.
Keywords :
estimation theory; noise; speech enhancement; noise power; noise spectrum estimation; orthogonal function; series expansion; speech enhancement; speechless frequency region; Estimation; Frequency estimation; Noise measurement; Signal to noise ratio; Speech; Speech processing; noise estimation; series expansion of orthogonal functions; spectral subtraction; speech enhancement; speechless frequency regions;
Conference_Titel :
Signal Processing (ICSP), 2010 IEEE 10th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5897-4
DOI :
10.1109/ICOSP.2010.5656822
