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논문 기본 정보

자료유형
학술저널
저자정보
Xiuhuan Wang (Chongqing Vocational and Technical University of Mechatronics)
저널정보
대한전자공학회 IEIE Transactions on Smart Processing & Computing IEIE Transactions on Smart Processing & Computing Vol.13 No.2
발행연도
2024.4
수록면
176 - 185 (10page)
DOI
10.5573/IEIESPC.2024.13.2.176

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초록· 키워드

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Broadband speech encoding and decoding methods are important for achieving highquality speech communication and audio applications. However, encoding and decoding algorithms often face problems such as large data-transmission volume and high computational complexity. To overcome these problems, a wideband speech codec algorithm is proposed based on compressed sensing and fractional calculus. Compressed sensing theory was used to sparsely represent wideband speech signals. The concept and method of fractional calculus are introduced to analyze and process wideband speech signals. Algebraic codebooks were used to adapt the structure and bit allocation of speech based on its different states and actual encoding and decoding rates. Embedded encoding and decoding of wideband speech can be achieved by adding and generating digital book pulses layer by layer. The results show that the proposed algorithm has a minimum encoding and decoding rate of 6.9 bits/s and a speech quality score of over 4.0. It also has low latency and high speed for speech encoding and decoding and provides high-quality speech evaluation. It has clear advantages in speech quality and data transmission efficiency. This study could provide new ideas and methods for further research and application of broadband speech coding and decoding.

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Abstract
1. Introduction
2. Broadband Voice Processing
3. Wideband Speech Coding and Decoding Algorithm
4. Experiment with Speech Encoder based on Calculus
5. Conclusion
References

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