海军航空工程学院学报2018，Vol.33Issue(6)：499-503,508,6.DOI:10.7682/j.issn.1673-1522.2018.06.001
音频信号联合编码的通用码书研究
Research on General Codebook of Joint Coding Algorithm for Audio Signal
摘要
Abstract
In order to reduce the computational complexity of the audio signal coding algorithm, in this paper, the algorithm was put forward which was based on the combination of linear predictive coding, SOM neural network vector coding and Huffman coding, and the original special codebook was changed to general codebook. Using Matlab software programming, the codec experiment under the condition of special codebook and general codebook was carried out. The experimental results show that under the condition of equal code rate, the joint coding method of universal codebook and special codebook can get similar decoding sound quality. The minimum code rate of the joint coding using the general code book is within the range of the code rate of the audio coding format Opus and is close to the lower limit of the Opus code rate, and the algorithm is simpler than the Opus coding, thus the real-time performance is better. The coding algorithm proposed in this paper can provide reference for further research of audio compression coding.关键词
音频信号/矢量编码/神经网络/压缩编码/通用码书/专用码书Key words
audio signal/vector coding/neural network/compression coding/general codebook/special codebook分类
信息技术与安全科学引用本文复制引用
杨超,黄隽逸,孙云,徐向旭,赵瑞青..音频信号联合编码的通用码书研究[J].海军航空工程学院学报,2018,33(6):499-503,508,6.基金项目
国家自然科学基金资助项目(61402529) （61402529）
