摘要
网格编码量化的算术编码(ACTCQ)是网格编码量化(TCQ)和算术编码(AC)的有机结合.本论文将ACTCQ应用于G.719,提出了一种改进的G.719音频编码器.主客观实验结果表明,与G.719音频编码器相比,改进的G.719音频编码器不仅降低了0.2%~5.0%的编码速率,而且提高了0.04~0.21的重建音频质量.
Arithmetic coded trellis coded quantization （actcq） is the combination of trellis coded quantization （tcq） and arithmetic coding （AC）. An improved G. 719 audio codec was proposed in this paper by applying ACTCQ to the G. 719 audio codec. Both the objective and subjective experimental results show that, compared with the G. 719 audio codec, the improved codec not only reduces the coding rate, but also obviously improves the reconstructed audio quality.
作者
赵胜辉
毛婷
刘洱兰
于莹莹
ZHAO Sheng-hui MAO Ting LIU Er-lang YU Ying-ying(School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2017年第7期748-752,共5页
Transactions of Beijing Institute of Technology
