A Review of Front End and Back End Techniques for ASR
Main Article Content
Abstract
Speech recognition is an alternative of typing on key-board. It is based on sound-analysis and converts the spelled words into the text. Last few decades have strengthened the foundation of ASR systems. This paper aims to provide an overview of the recognition process. Various feature extraction methods like MFCC, PLPCC etc. are reviewed here. These methods (MFCC and PLPCC) are compared on the basis of their way of processing the speech utterance. Connectionist approach to recognize the speech is explored. Finally experimental results are presented to show that how PLPCC provides more accuracy than MFCC as the number of coefficients increases.
Â
Keywords: ASR, Hidden Markov Models, Mel Frequency Cepstral Coefficients, PLPCC, Time Delay Neural Networks, WER
Downloads
Article Details
COPYRIGHT
Submission of a manuscript implies: that the work described has not been published before, that it is not under consideration for publication elsewhere; that if and when the manuscript is accepted for publication, the authors agree to automatic transfer of the copyright to the publisher.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work
- The journal allows the author(s) to retain publishing rights without restrictions.
- The journal allows the author(s) to hold the copyright without restrictions.