Summarizing a new approach to design speech recognition systems: a reliable noise-immune HW-SW version

Presents in this paper a summary of a new approach aimed at coupling "HW/SW codesign" with "redundancy techniques" to implement speech recognition systems (SRS). The methodology partitions the HW and SW parts in such a way as to boost system performance while area overhead is maintained as low as possible. At the same time, reliability, in terms of redundancy (consistency check and transparent BIST) is included in the SRS. Additionally, a new approach to reconstruct noisy speech signals is also presented. This approach is analogous to the hardware technique known as hot standby sparing, where the main program and its copies are all running simultaneously. In this scheme, the speech signal reconstruction is based on real time reconfiguration. We refer to the proposed approach as "speech recognition-oriented HW/SW partitioning and fault-tolerant design" approach (or simply SCORPION approach).