问题
A little bit of context - I'm creating a pocketsphinx application for android, using jsgf grammars (though the problem persists with fsg grammars as well). My code is based on the pocketsphinx demo for android.
Pocketsphinx is producing a bizarre issue where the accuracy appears to be degrading after only a couple of queries to the engine. The first query has near perfect accuracy - it can recognize relatively complicated and convoluted phrases without difficulty. However the second, and third recognitions can barely pick up a two syllable word, and by the fourth query to the engine, it simply fails to generate a hypothesis.
I'm not quite sure whats causing the problem, the original demo appeared to work fine, and I have hardly altered the configuration of the speech engine, other than adding a grammar. Anyway, has anyone else ever experienced something like this, or even have a suggestion as to what I could try to remedy this?
Thanks
回答1:
Problem solved, turns out I needed the -dither option to account for 'zero energy regions' Thanks to Nikolay Shmyrev for the solution https://sourceforge.net/projects/cmusphinx/forums/forum/5471/topic/5507338
来源：https://stackoverflow.com/questions/11855659/weird-pocketsphinx-accuracy-degredation