DSP-based speech encoding and transmission for the Cochlea Implant
Peng Cheng-li · Microcomputer Information · 2009
In the design of the Cochlea Implant, the real-time speech processing and coding effectively is the pivotal technology. Due to the location coding principle, this paper proposed a flexible scheme of hardware and software on speech processing system for Cochlear Implant. In this design, DSPs as a hardware’s core has been used for speech signal acquisition, processing under CIS (Continuous Interleaved Sampling) principle, CVSD coding (Continuously Variable Slope Delta Modulation), and then transmitted wireless via nRF2401A module. Preliminary experiments validated that the proposed system could effectively convert the speech to the signals required by Cochlear Implant with the wireless transmission scheme efficiently.