Designing algebraic trellis code as a new fixed codebook module for ACELP coder
- Title
- Designing algebraic trellis code as a new fixed codebook module for ACELP coder
- Author
- 강상원
- Keywords
- speech coding; algebraic CELP; trellis coded quantization; Viterbi algorithm; QUANTIZATION
- Issue Date
- 2008-03
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Citation
- IEICE TRANSACTIONS ON COMMUNICATIONS, v. E91B, No. 3, Page. 972-974
- Abstract
- In this paper, a block-constrained trellis coded quantization (BC-TCQ) algorithm is combined with an algebraic codebook to produce an algebraic trellis code (ATC) to be used in ACELP coding. In ATC, the set of allowed algebraic codebook pulse positions is expanded, and the expanded set is partitioned into subsets of pulse positions; the trellis branches are labeled with these subsets. The list Viterbi algorithm (LVA) is used to select the excitation codevector. The combination of an ATC codebook and LVA trellis search algorithm is denoted as an ATC-LVA block code. The ATC-LVA block code is used as the fixed codebook of the AMR-WB 8.85 kbps mode, reducing complexity compared to the conventional algebraic codebook.
- URI
- https://www.jstage.jst.go.jp/article/transcom/E91.B/3/E91.B_3_972/_articlehttps://repository.hanyang.ac.kr/handle/20.500.11754/104396
- ISSN
- 0916-8516
- DOI
- 10.1093/ietcom/e91-b.3.972
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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