| 可编程语音压缩专用处理器设计 |
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| 引用本文： | 韩大晗,崔慧娟,唐昆,刘大力.可编程语音压缩专用处理器设计[J].清华大学学报(自然科学版),2007,47(1):76-79. |
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| 作者姓名： | 韩大晗 崔慧娟 唐昆 刘大力 |
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| 作者单位： | 1. 清华大学,电子工程系,微波与数字通信技术国家重点实验室,北京,100084
2. 北京多思公司,北京,100083 |
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| 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。基于正弦激励线性预测(SELP)算法模型,设计了一款多速率语音专用处理器。芯片使用可重构体系结构和超长指令字(VLIW),优化了高复杂度函数。仿真结果表明:该处理器对0.6kb/s速率SELP算法的执行效率明显优于通用数字信号处理器(DSP)。处理器内部程序数据外部不可见,指令并行度显著提高,常用函数可被修改,从而达到高保密性、低复杂度、易开发性。
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| 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 |
| 文章编号： | 1000-0054(2007)01-0076-04 |
| 修稿时间： | 2005年12月26 |
Programmable processor for speech compression |
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| HAN Dahan,CUI Huijuan,TANG Kun,LIU Dali.Programmable processor for speech compression[J].Journal of Tsinghua University(Science and Technology),2007,47(1):76-79. |
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| Authors: | HAN Dahan CUI Huijuan TANG Kun LIU Dali |
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| Abstract: | Programmable processors are needed to increase communication system security and reduce manufacturing costs.A multi-rate speech compression processor was designed based on the sinusoidal excitation linear prediction(SELP) model. The chip uses a reconfigurable architecture and very long instruction words(VLIW) to optimize the complex functions.Simulations show that the chip implements the 0.6 kb/s SELP algorithm more efficiently than a universal digital signal processor(DSP).The internal program and data cannot be read from the outside;while the instruction parallel property is remarkably improved and often used functions can be changed,thus providing high security,low complexity and good development flexibility. |
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| Keywords: | speech signal processing speech compression application-specific integrated circuit reconfigurable architecture very long instruction word |
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