电子耳蜗调试平台的教学实验系统研制

摘要

为了测试不同言语处理算法对电子耳蜗（CI）信号编码的影响，研制了一套CI调试平台的教学实验系统。该平台主要包括PC机和嵌入式处理器模块。PC机完成对CI调试平台的参数设置和采集语音信号，并通过言语处理算法对语音信号进行处理并存为．dat文件。嵌入式处理器模块以OMAP-L137双核处理器为核心，通过局域网接收PC机发送的CI工作参数和．dat文件，据此调整CI调试平台的工作模式并进行编码发射。学生可在CI调试平台上观察不同言语处理算法对CI信号编码的影响，并可以设计自己的言语处理算法进行测试。该调试平台有助于加深学生对CI工作流程的理解并激发学生的创新性思维。%In order to test the influence on the speech coding of cochlear implant (CI) processed by different speech algorithms ,a teaching experiment system of cochlear implant debugging platform is developed .This platform includes a PC and an embedded module .The PC is responsible for setting up the working parameters of CI debugging platform ,sampling the speech signal ,processing the speech signal by alternative or scheming algorithms on PC ,and saving data as formatted .dat file .The core of the embedded module is the OMAP L137 dual-core processor .The operating parameters and the .dat file on PC can be transmitted to the OMAP-L137 via the LAN ,therefore the operating mode and the encoded transmission signal of CI can be updated .Students are encouraged to design innovative processing strategies and test on this platform .This platform is helpful for students to understand different results processed by different speech algorithms ,and it also supplies the chance for students to explore their creative thinking to design innovative processing strategies .