What is -pl_window parameter used for. For the current version of pocketsphinx
its default value is 0. Is there any range of typical values for pl_window.
What effect can be expected if its value is changed, that is, does it
influences speed of recognition or WER.
Regards
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Phonetic lookahead is a specific technique which is used to speedup decoding
by reducing the amount of computation. Basically everything is decoded with
phonetic decoder first and then detailed search is restricted by the results
of the fast phonetic search. It's also called "Fast match". For details and
evaluations see
pl_window specifies lookahead distance in frames. Typical values are from 0
(don't use lookahead) to 10 (decode 10 frames ahead). Bigger values give
faster decoding but reduced accuracy.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
What is -pl_window parameter used for. For the current version of pocketsphinx
its default value is 0. Is there any range of typical values for pl_window.
What effect can be expected if its value is changed, that is, does it
influences speed of recognition or WER.
Regards
Phonetic lookahead is a specific technique which is used to speedup decoding
by reducing the amount of computation. Basically everything is decoded with
phonetic decoder first and then detailed search is restricted by the results
of the fast phonetic search. It's also called "Fast match". For details and
evaluations see
4.5 Phonetic Fast Match
In
Efficient Algorithms for Speech Recognition Mosur K.
Ravishankar
pl_window specifies lookahead distance in frames. Typical values are from 0
(don't use lookahead) to 10 (decode 10 frames ahead). Bigger values give
faster decoding but reduced accuracy.