Papers

A Fast Adaptive-codebook Search Algorithm for G.723.1 Speech Coder

International Journal
~2005
작성자
이진영
작성일
2005-01-01 13:11
조회
2405
Authors : Sung-Kyo Jung, Kyung-Tae Kim, Young-Cheol Park, Hong-Goo Kang

Year : 2005

Publisher / Conference : IEEE Signal Processing Letters

Volume : 12, issue 1

Page : 75-78

This letter presents a new fast search algorithm for the multitap adaptive codebook used in the G.723.1 standard speech coder. In contrast with the standard method that a closed-loop pitch lag and gains for a fifth-order pitch predictor are searched simultaneously, the proposed algorithm adopts a sequential and restricted approach to determine the parameters. In other words, the proposed scheme first determines a couple of pitch lag candidates using a first-order pitch predictor and then computes the pitch gains of the fifth-order predictor within a restricted search area. Experimental results confirm that the proposed algorithm reduces the total complexity by 30.69% in the encoding process and provides speech quality equivalent to the standard method.
전체 368
6 Domestic Conference Bong-Jin Lee, Hong-Goo Kang, Dae Hee Youn "Speaker Verification Using Various Resolution Filterbanks" in in Proc. the Acoustical Society of Korea Conference, 2005
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4 International Conference Min-seok Choi, Hong-goo Kang "An improved estimation of a priori speech absence probability for speech enhancement: in perspective of speech perception" in IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 2005
3 Domestic Journal Samuel Kim, Jung-Tae Seo, Hong-Goo Kang "Quantitative Measure of Speaker Specific Information in Human Voice: From the Perspective of Information Theoretic Approach" in 한국음향학회지, vol.24, 제 1호, pp.16-20, 2005
2 International Journal Seung Kyun Ryu, Hong-Goo Kang, Sung-Kyo Jung, Dae Hee Youn "Improving the Performance of the Minimum Statistics Noise Estimator for Single Channel Speech Enhancement" in IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.E88-A, pp.582-585, 2005
1 International Journal Sung-Kyo Jung, Kyung-Tae Kim, Young-Cheol Park, Hong-Goo Kang "A Fast Adaptive-codebook Search Algorithm for G.723.1 Speech Coder" in IEEE Signal Processing Letters, vol.12, issue 1, pp.75-78, 2005