基于DSP的长时间语音信号采集与存储系统设计
毕业论文关键词 语音信号处理 TMS320C6713 系列DSP USB2.0 AD采样
Title Long-time speech signal acquisition and memory system design based on DSP
Abstract As a form of message with maximized connotation and the highest level of intelligence，speech has been deep covered in all aspects of people’s daily life and industrial production fields. With the development of science，DSP is now under rapid improvement. Currently，there is a significant field which is the combination of speech and DSP，included with multiple studies speech analysis，speech recognition，speech acquisition， and storage directions. Speech signal is needed elevation for its timeliness，exactness and reliability. So，It is also essential to raise the ability of processors. Consequently，Long-time speech signal acquisition and storage is a major problem at present. Firstly，the entire design is analyzed with the TMS320C6713 series framework and chips over the system all included. Secondly，Design of each module is analyzed，such as acquisition module and memory module. Afterwards，TMS320C6713 program is designed to control the USB chip and sampling chip which can realize the collection and transmission of data. Digital speech has been received by computer USB interface，then，data transmission performance of BULK mode also has been analyzed. Thirdly，Simulation experimental results of AD speech signal module and USB module has been described in this paper. Finally，the last part of the paper provides some suggestions to improve the system，and the future of the system. Keywords Voice Signal Processing TMS320C671 series DSP USB2.0 AD Sampling
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1 引言 … 1
1.1 课题背景阐述 … 1