Title :
L1 and L2 normed cepstral distance controlled distortion performance [speech quality]
Author :
Schroeder, James E. ; Kubichek, Robert F.
Author_Institution :
Dept. of Eng., Denver Univ., CO, USA
Abstract :
The behavior of the CD (cepstral distance) is studied under serveral types of controlled distortion. In addition, CD values are computed from both L1 and L2 normed LPC (linear predictive coding) models; these results are compared and discussed. The analysis indicates that the L1-based CD is more robust than more typical L 2-based solutions, especially when impulsive-type noise is present. The CD does not appear to be effective for echo-type distortions. However, it provided monotonic behavior for other impairments such as added noise, clipping and low-pass filtering
Keywords :
encoding; spectral analysis; speech analysis and processing; white noise; AWGN; L1-based CD; L2-based CD; LPC; cepstral distance measure; clipping; controlled distortion; echo-type distortions; impulsive-type noise; linear predictive coding; low-pass filtering; speech quality; Additive noise; Cepstral analysis; Distortion measurement; Filtering; Gaussian noise; Linear predictive coding; Signal to noise ratio; Speech enhancement; Telecommunication control; US Department of Commerce;
Conference_Titel :
Communications, Computers and Signal Processing, 1991., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-87942-638-1
DOI :
10.1109/PACRIM.1991.160676
