Development of an evaluation system for cochlear implant

The cochlear implant (CI) stimulation parameters such as pulse width, phase gap, pulse amplitude, and stimulation rate are the key and fundamental features in the objective evaluation of a CI device. In this study, an electronic evaluation system was developed to measure the above CI parameters for fully understanding the performance of a CI device. This system is multi-functional, powerful and flexible, which contains several modules, e.g. source signal generation, I/O synchronization, pulse sequence acquisition, data processing, and pulse/waveform display. A user-friendly graphic interface was developed including many useful functions and options to make different measurement and evaluation. The measurement results and original data can be easily exported from the evaluation system for further analysis. The accuracy and limitation of the system will also be discussed in this work. This system is suitable for CI parameter verification, speech processing research strategy evaluation, multi-electrode strea...