摘要
针对战车内部乘员间通话时强烈噪声的干扰问题,设计了基于DSP和ARM的数字车通音频处理系统。系统由LPC2378、TMS320VC5402和TLV320AIC23主要部件组成,ARM微控制器LPC2378以SPI方式控制TLV320AIC23音频芯片,用DSP TMS320VC5402的McBSP接口与TLV320AIC23传输数据,给出了ARM配置TLV320AIC23、DSP与TLV320AIC23间数据传输的接口程序设计和DSP实现谱减法语音增强算法流程。该设计接口简单,充分发挥了ARM的控制性能和DSP的数据处理能力,为乘员间高质量语音通信提供了实现方案。
In order to solve the problems of strong noise interference when the crews communicated inside the combat vehicle,the digital audio processing system based on DSP and ARM was designed.The system was mainly composed of LPC2378,TMS320VC5402 and TLV320AIC23.ARM microcontroller based on LPC2378 controlled TLV320AIC23 audio chip by means of SPI interface,and DSP exchanged data with AIC23 through its multichannel buffer serial ports.The program of ARM equipped with TLV320AIC23 and data transmission interface between DSP and TLV320AIC23 were given,and implementation process of spectral subtraction method in speech enhancement algorithm based on DSP was described.The system has the simple interface,and the ARM control performance and DSP data processing capabilities are improved.The system can provide the realization program of high-quality speech communications for the crews inside the combat vehicle.
出处
《火炮发射与控制学报》
北大核心
2010年第4期99-102,共4页
Journal of Gun Launch & Control
关键词
信息处理技术
战车
通信
音频处理
information processing
combat vehicle
communication
audio processing
