摘要
在研究数字信号处理的基础上,实现基于16bit数字信号处理器TMS320VC5402的语音信号采集和数字信号扩展存储系统,给出了系统硬件设计和软件流程图。语音处理算法采用上下限可调的带通滤波器实现带外噪声消除,应用预加重技术改善了高频段特性,系统存储器大小可根据用户需要灵活选择。
On the basis of 16 bit digital signal processing TMS320VC5402, the system of speech information sampling is designed and the memory of digital speech signal is realized. The design of hardware and the program flow chart of the system are proposed, The band-pass filter, the up-and-down band of which can be adjusted, is used to reduce the noise. The characteristic of high frequency is improved by the pre-emphasis technic. The capacitance of memory may be changed according to the practice need.
出处
《电声技术》
2008年第4期44-47,共4页
Audio Engineering
关键词
语音信号采集
扩展存储
自举加载
数字信号处理
speech information sampling
enlarged memory
boot loader
digital signal processing
