摘要
应用TMS320C5409DSP和AT89C51单片机设计的一种多速率声码器。着重介绍该声码器系统中AT89C51构成的控制、通信功能模块和TMS320C5409实现实时的语音压缩编解码功能模块,以及两者之间的接口方式。特别说明了该声码器根据外部提供的同步时钟自适应地改变工作速率的方法。该声码器具有很好的通用性和灵活性,在实际通信系统中应用并表现出了良好的性能。
Introduced how to design a multi- rate vocoder using TMS320C5409 DSP with AT89C51 single chip microcomputer. Emphasisly demonstrated its control communication system function module constituted with AT89C51 and real - time encapsulated voice system codified and uncodified with TMS320C5409,including both of interface mode. Especialy realized the method of adapting to change its work rate in accordance with outward provided synchronization clock. This vocoder has better availabity and flexibblity, furthermore shows better capability applied to actual communication system.
出处
《现代电子技术》
2007年第6期12-13,16,共3页
Modern Electronics Technique
基金
十堰职业技术学院科研项目(2004KN002)
