【作者】 刘鑫； 鲍长春； 贾懋珅；

【Author】 LIU Xin BAO Chang-chun JIA Mao-shen Speech and Audio Signal Processing Lab,School of Electronic Information and Control Engineering, Beijing University of Technology,Beijing,100124

【机构】 北京工业大学电子信息与控制工程学院语音与音频信号处理实验室；

【摘要】 本文基于嵌入式语音频编码原理,采用阶乘脉冲编码(factorial pulse coding,FPC)量化方法代替格形矢量量化(lattice vector quantization,LVQ)进行变换码激励(transform coded excitation,TCX)编码,提出了一种基于FPC的嵌入式宽带音频编码,并通过客观质量测试、语谱图分析和复杂度统计分析了LVQ和FPC在嵌入式音频编码中的优劣性。更多还原

【Abstract】 In this paper,a new embedded wideband speech and audio codec based on factorial pulse coding(FPC) is proposed.As a kind of efficient quantization method,FPC is applied to transform coded excitation(TCX) coding instead of lattice vector quantization(LVQ).The performance comparison of LVQ and FPC in embedded audio coding is made according to objective quality test,spectrogram analysis and complexity statistics.更多还原