Re: For Noisy Input
>But now I am concerned about '.wav' file which usually be bit noisy(Input is
>from telephone line). This is making the decrease in performance which is
Are you using an acoustic model that was trained with telephony speech (i.e. 8kHz-8bit rather than 16kHz-16bit audio)?
>what is the necessity of placing grammar and vocabulary files in
>'auto' directory and executing 'mkdfa.pl' script while preparing
As described in the Julius book for rev.3.2::
For the task grammar, sentence structures are
written in a BNF style using word categories as
terminating symbols to a grammar file. A voca
file contains the pronunciation (phoneme sequence)
for all words within each category are created.
These files are converted with mkdfa.pl(1) to a
deterministic finite automaton file (.dfa) and a
dictionary file (.dict)
>How to catch the 'score' of recognition to avoid bad results? some
>times the bad result's score is nearer than score of matching words.
Include non-target-grammar words in your grammar. See this post for more information:One word grammar, always recognized?
--- (Edited on 5/3/2009 8:11 pm [GMT-0400] by kmaclean) ---