强噪声背景下近距离语音通信系统硬件装置设计  

Design of hardware device for near-distance speech communication system under high noise background

作　　者：郝大鹏[1] 付峰[2] 周龙甫[1] 

机构地区：[1]成都军区总医院医学工程科,成都610083 [2]第四军医大学生物医学工程学院,西安710032

出　　处：《医疗卫生装备》2015年第11期23-26,共4页Chinese Medical Equipment Journal

摘　　要：目的:为解决强噪声背景下近距离语音通信难题,设计一套硬件装置,解决语音信息采集、背景噪声滤除以及近距离传输等问题。方法:以STM32F303处理器为核心,通过集成音频接口(integrate interface of sound,IIS)音频总线连接音频录放模块,对采集、接收到的语音信号进行处理,通过蓝牙实现近距离传输。结果:该硬件装置能够采集到语音信号,经音频转换后可实现蓝牙传输及外放,效果良好。结论:该装置能够采集语音信号、滤除背景噪声,实现近距离语音传输。Objective To design a set of hardware devices to solve the problems in collecting speech signal under high noise background, filtering background noise and near-distance signal transmission. Methods With STM32F303 processor and ISS audio bus, audio playback module was used to process the acquired speech signal. Then digital signal was transmitted via Bluetooth. The designed hardware device and the processed signal provided foundations for an improved wavelet neural network to extract speech signal. Results The speech signal under high noise background could be collected by the designed hardware device. Then with an audio convert, the speech signal was transmitted by Bluetooth and broadcasted through the headset of the device. Conclusion The device can acquire speech signal, filter out background noise and achieve near-distance transmission.

关 键 词：硬件设计 ISS总线接口 语音信号采集 音频录放 蓝牙传输 

分 类 号：TN912.3[电子电信—通信与信息系统]