【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。更多还原

【Abstract】 Programmable application-specific processor is necessary in order to increase communication system security and reduce manufacture cost. An application special processor is introduced for high quality multi-rate speech compression algorithm based on SELP(sinusoidal excitation linear prediction) model. The chip uses reconfigurable architecture and VLIW(very long instruction word) system design method, by which high complexity sub programs are optimized to get a remarkable instructions parallel. The simulation result shows speech compression algorithms which are implemented on this chip have higher efficiency than that on universal DSP(digital signal processor) under the same technical level, while maintaining the original coding quality. The chip can implement different types of speech compression algorithms and reach to good security, low complexity and development convenience.更多还原