Design of a variable rate algorithm for the CS-ACELP coder
- Title
- Design of a variable rate algorithm for the CS-ACELP coder
- Author
- 강상원
- Keywords
- Algorithm design and analysis; Signal processing algorithms; Delay estimation; Bit rate; Speech coding; Speech analysis; Background noise; Speech synthesis; Electric variables control; Telecommunication control
- Issue Date
- 1999-10
- Publisher
- IEICE
- Citation
- VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151) Vehicular Technology Conference, 1998. VTC 98. 48th IEEE. 3:2378-2382 vol.3 1998
- Abstract
- In this paper, we propose an efficient variable rate algorithm for G.729. The variable rate algorithm consists of two main subjects, the rate determination algorithm and the design of sub rate coders. For the rate determination, we combine the energy-thresholding method, the phonetic segmentation method and the variable hangover period method. Through the analysis of noise features, a 1 kb/s sub rate coder is designed for coding the background noise signal. Also, we design a 4 kb/s sub rate coder for the unvoiced parts. Experiments show that the proposed variable rate conjugate structure-algebraic code excited linear prediction (CS-ACELP) coder produces the same speech quality as G.729, at the average bit rate of 4.4 kb/s.
- URI
- https://ieeexplore.ieee.org/document/686184?arnumber=686184&SID=EBSCO:edseeehttps://repository.hanyang.ac.kr/handle/20.500.11754/171393
- ISBN
- 0-7803-4320-4; 978-0-7803-4320-7
- ISSN
- 1090-3038
- DOI
- 10.1109/VETEC.1998.686184
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML