一款高质量多速率语音专用处理器芯片的设计

2009-10-6 09:09:08 2500

0 摘要：为了提高通信系统的保密性，降低制造成本，需要进行专用处理器的设计。该文基于SELP(Sinusoidal Excitation Linear Prediction)算法模型原理，设计了一款高质量多速率语音专用处理器芯片。芯片使用可重构体系结构和超长指令字系统设计方法，将复杂度高的子程序进行优化，能够显著提高指令并行度。仿真结果表明：在该芯片上实现语音压缩编码算法，执行效率高于相同工艺水平的通用数字信号处理器，并保持原有编码质量。该处理器能够实现多种类型的语音压缩算法，使语音算法可以达到高保密性、低复杂度和易开发性。关键词：语音信号处理；语音压缩；专用芯片；可重构体系结构；超长指令字 Design and Application of Programmable Speech Processor (1. State Key Laboratory of Microwave and Digital Communications, Department of Electronic Engineering, Tsinghua University, Beijing 100084；2. Beijing Wisdom Company, Beijing 100083) 【Abstract】Programmable application-specific processor is necessary in order to increase communication system security and reduce manufacturecost. An application special processor is introduced for high quality multi-rate speech compression algorithm based on SELP(sinusoidal excitationlinear prediction) model. The chip uses reconfigurable architecture and VLIW(very long instruction word) system design method, by which highcomplexity sub programs are optimized to get a remarkable instructions parallel. The simulation result shows speech compression algorithms whichare implemented on this chip have higher efficiency than that on universal DSP(digitalsignal processor) under the same technical level, whilemaintaining the original coding quality. The chip can implement different types of speech compression algorithms and reach to good security, lowcomplexity and development convenience. 【Key words】Speech signal processing; Speech compression; Application-specific integrated circuit(ASIC); Reconfigurable architecture; Very longinstruction word 游客，如果您要查看本帖隐藏内容请回复 0 本帖子中包含更多资源您需要登录才可以下载或查看，没有帐号？注册 x
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