麦克风阵列语音增强系统的硬件设计  

Hardware Design of Microphone Array Audio Enhancement System

作　　者：杨晓华[1] 侯宝娥[1] 

机构地区：[1]91439部队460所

出　　处：《四川兵工学报》2014年第3期100-104,共5页Journal of Sichuan Ordnance

摘　　要：麦克风阵列语音增强利用语音信号的时域、频域和空域三方面的信息对语音信号进行增强处理;多路语音信号的采集和处理存在着多路信号同步采样和大数据量实时处理的问题,经权衡性价比,采用了ADI的ADSP-BF533作为主处理器,并利用AD73360的多路信号同步采样以及其支持多片级联的特点,搭建了该阵列语音信号增强系统的硬件平台;按照语音信号由采集、处理一直到输出的先后顺序分别对该硬件系统的各个模块进行了详细的介绍,并给出了必要的图示说明。Microphone array audio enhancement uses the information of audio signal not only in temporal and frequency domain but also in spatial domain for speech enhancement. For collection and processing of multichannel audio signal, there exist problems such as huge amount of data in realtime and the synchro nization of different channels. After comparison, the author chose ADSPBF533 as the main processor and used the advantage of AD73360＇ s characteristic that allowed multi chips in chain to establish the hardware system. According to the sequence of speech signal getting into and out of system, the article gives a de scription of different modules of the system in detail, and also, necessary diagrams are given.

关 键 词：麦克风阵列 语音增强 DSP 硬件实现 ADSP—BF533 

分 类 号：TN406[电子电信—微电子学与固体电子学]