Title :
Reconstruction of missing speech packet using trend-considered excitation
Author :
Xiaoli, Wang ; Mangui, Liang
Author_Institution :
Inst. of Inf. Sci., Northern Jiaotong Univ., Beijing, China
Abstract :
A good packet loss recovery algorithm for PCM coded speech is described in this paper. The algorithm gets the excitation signal from the past packet by linear prediction and considers the trend of the excitation to recover the lost packet. By applying the algorithm to the G.711 μ-law coder, the new algorithm is superior to other algorithms in subjective quality tests.
Keywords :
Internet telephony; linear predictive coding; pulse code modulation; signal reconstruction; speech codecs; speech coding; G.711 μ-law coder; PCM coded speech; excitation signal; linear prediction; missing speech packet reconstruction; packet loss recovery algorithm; subjective quality tests; trend-considered excitation; voice over IP; Filters; Information science; Phase change materials; Predictive models; Pulse modulation; Signal generators; Speech analysis; Speech synthesis; Testing; Vocoders;
Conference_Titel :
Signal Processing, 2002 6th International Conference on
Print_ISBN :
0-7803-7488-6
DOI :
10.1109/ICOSP.2002.1180124
