Title :
A Fast Search Approach for LSF Parameters Codebook
Author :
Bai, Yanning ; Bao, Changchun
Author_Institution :
Speech & Audio Signal Process. Lab., Beijing Univ. of Technol.
Abstract :
In this paper, a fast-search algorithm is introduced to reduce the complexity of LSF quantization in speech coding. A new inequality between the weighted mean and the weighted Euclidean distance is derived. Using this inequality, many codewords that are impossible to be the nearest codeword are rejected directly. The proposed algorithm produces the same output as conventional full search algorithm and the experiment results confirm its effectiveness
Keywords :
speech coding; LSF parameters codebook; codewords; fast-search algorithm; line spectral frequency; speech coding; weighted Euclidean distance; Distortion measurement; Euclidean distance; Frequency conversion; Frequency synthesizers; Linear predictive coding; Paper technology; Quantization; Signal processing algorithms; Speech coding; Speech processing;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1660152
