Signal Processing Application

ERROR CORRECTION IN SPEECH RECOGNITION

PATENT REVIEW:
Patent name: Error Correction in Speech Recognition

Inventors: Daniell Stevens; Robert Roth, Joel M. Gould, Michael J. Newman, Dean Sturtevant, Charles E. Ingold, David Abrahams, Allan Gold

Patent Number : US 7,315,818 B2
Patent Date: Jan. 1, 2008

Review:

In this patent, new techniques and system for error correction in speech recognition have been discussed. These techniques can be implemented in a standard desktop environment, or a mobile environment, which are suitable for receiving and processing speech. As explained in the patent, a method of correcting error includes performing speech recognition on the utterance to produce recognition result and producing a list of words for the recognised word. There are several levels of correction and each level has a different time duration. The grammar of the received text can also be checked and corrected.

Patent link : Error Correction in Speech Recognition 

PAPER REVIEW:
Paper Name : Speech Recognition Error Correction by using Combinational Measures

Authors: Baoxiang Li, Fengxiang Chang, Jun Guo, Gang Liu

Review:

This paper has put forth the idea of post processing technique for correcting misrecognition results from a continuous speech recogniser. The proposed idea is based on Word Activation Force (WAF) mode. This model has the ability to correct syntactic and semantic errors by considering neighbours' information. The error correction algorithm corrects recognition errors by creating a candidate list. Then elimination of words based on some criterion reduces the number of possibilities. Then a word is chosen.

Paper link: Speech recognition error correction