基于处理器CK610的音频解码系统设计

发布时间：2018-04-02 11:25

本文选题：嵌入式系统　切入点：音频解码　出处：《哈尔滨工业大学》2013年硕士论文

【摘要】：嵌入式系统是当今电子行业最热的主题之一。近年来，嵌入式产业蒸蒸日上，不断发展进步。而音乐又是当今人类不可缺少的一种元素，，利用嵌入式低功耗、可裁剪、便携带等等特性来在嵌入式平台上进行音频解码已经成为人们研究的热点之一。本文所使用的硬件平台的核心是嵌入式CK610系列处理器，该处理器具有我国自主知识产权。在当今ARM、MIPS等多家流行的年代，积极推广具有国内自主知识产权的国产处理器对提高我国在电子行业内的核心竞争力具有重要意义。本文在介绍CK610系列处理器以及嵌入式平台开发板CK5A6EVB的基础上，对所应用的Bootloader和Linux3.0内核进行了分析及移植，并进行了AC-3解码和DTS解码的性能测试。本文首先对Bootloader进行了完善，使其能够通过指令来启动内核。然后对Bootloader下的IIC按键进行了模块设计，来实现对AC-3和DTS解码的控制。然后在Bootloader下对AC-3和DTS解码程序进行了模块移植，并在Bootloader下不同CPU时钟频率和AHB、APB总线频率下对AC-3和DTS文件解码进行了性能测试。最后在操作系统Linux3.0下对AC-3和DTS解码程序进行了编译执行，在不同CPU时钟频率和AHB、APB总线频率下对AC-3和DTS文件解码进行了性能测试，实现了操作系统Linux3.0下AC-3的实时解码。本文对CK610系列处理器的音频解码性能有了一个评估，有助于我国在国产音频产业的发展。
[Abstract]:The embedded system is one of the hottest topics in the electronic industry nowadays. In recent years, the embedded industry is booming and developing. It has become one of the research hotspots to carry on audio decoding on embedded platform. The core of the hardware platform used in this paper is embedded CK610 series processors, which have our own intellectual property rights. It is of great significance to promote the domestic processors with domestic independent intellectual property rights to improve the core competitiveness of our country in the electronics industry. Based on the introduction of CK610 series processors and embedded platform development board (CK5A6EVB), this paper analyzes and transplants the applied Bootloader and Linux3.0 kernels, and tests the performance of AC-3 decoding and DTS decoding. In this paper, Bootloader is first perfected to enable it to start the kernel through instructions. Then, the module design of IIC keys under Bootloader is carried out. To realize the control of AC-3 and DTS decoding. Then the module porting of AC-3 and DTS decoding program is carried out under Bootloader. The performance of decoding AC-3 and DTS files is tested under different CPU clock frequency and CPU bus frequency under Bootloader. Finally, the AC-3 and DTS decoding programs are compiled and executed under the operating system Linux3.0. The performance of AC-3 and DTS file decoding is tested at different CPU clock frequency and DTS bus frequency, and the real-time decoding of AC-3 is realized under the operating system Linux3.0. In this paper, the audio decoding performance of CK610 series processors is evaluated, which is helpful to the development of domestic audio industry in China.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN912.3;TP368.1

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