Ah, I understand now, you’re using a full 44.1k rate and PocketsphinxController requires (really requires) a 16k rate. If you convince it not to sample at 16k you will reduce the recognition accuracy severely. You’re correct that 16k recordings won’t sound as nice as 44.1k (CD quality) but if Pocketsphinx analyzed a 44.1k recording it would take forever.