摘要
为了解决聋哑人士的听讲问题,设计了不依赖于人耳残余听力的皮肤听声器。基于嵌入式的皮肤听声器,提高了获取不同环境声音信号的能力。系统地阐述了将嵌入式技术应用于皮肤听声技术的原因,并对嵌入式的两种热门技术ARM及DSP在皮肤听声器中的应用做了比较分析。该试验方案使用DSP芯片设计硬件平台,对语音数据进行专门的数字信号处理,重点对语音信号预处理、非线性放大、自动音量调节和数字带通滤波等语音处理方案进行了研究。
In order to solve the hearing problems of deaf people,skin-hearing aid is designed.The skin-hearing aid based on the embeded enhance the ability of getting audio signals in different environments.The reasons for embed used in the Skin-hearing technology is systematically described,and the difference of the two hot skills ARM and DSP is presented.The DSP chip of the hardware platform is used in the experiment,it is used for the audio signals processing.The voice signals pretreatment the voltage area adjustment,the system of auto volume adjustment as well as the digital band-pass filter are analyzed in detail.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第17期3750-3753,共4页
Computer Engineering and Design
基金
国家自然科学基金项目(60672001)
陕西省教育厅专项基金项目(05JC03)
