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
364
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 327
12 International Conference Jae-woong Jeong, Junho Lee, Young-Cheol Park, Jeong-Tae Kim, Dae Hee Youn "Design and Implementation of IIR Crosstalk Cancellation Filters Approximating Frequency Warping" in 118th Convention of Audio Engineering Society, pp.6490, 2005
11 International Conference Kyoung Ho Bang, Keun-Sup Lee, Young-Cheol Park, Dae Hee Youn "Fast Bit Allocation Method for MP3/AAC Encoders" in 118th Convention of Audio Engineering Society, 2005
10 Domestic Conference 이민기, 김경태, 강홍구, 윤대희 "광대역 음성신호의 음질평가를 위한 바크 코히어런스 함수" in 2005년 한국음향학회 춘계학술발표대회, 2005
9 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
8 International Journal Yang-Won Jung, Hong-Goo Kang, Chungyong Lee, Dae Hee Youn, Changkyu Choi, Jaywoo Kim "Adaptive Microphone Array System with Two-Stage Adaptation Mode Controller" in IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences, vol.E88-A, pp.972-977, 2005
7 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
6 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
5 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
4 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
3 Domestic Journal 정재웅, 이준호, 박영철, 윤대희 "Pole-zero Dewarping을 이용한 효율적인 Crosstalk 제거 알고리듬" in 한국음향학회지, vol.24, 제 3호, pp.133-140, 2005