pocket-sphinx-python TypeError: in method 'Decoder_set_lm', argument 3 of type 'NGramModel *'

[David Weßling]

Hello,
I am Trying to write a small python application using pocket-sphinx, but i'll keep encountering this TypeError, no matter how i pass the path to my languagemodel (i tried an absolute path in string-format and os.path)

this is the relevant code:

self.config = Decoder.default_config()
        self.config.set_string("-hmm",os.path.join(MODEL_DIR,"acousticModel"))
        self.config.set_string("-dict",os.path.join(MODEL_DIR,"mergedDic.dic"))
        self.config.set_string("-lm",os.path.join(MODEL_DIR,"voxforge.lm.bin"))
        self.languageModel=os.path.join(MODEL_DIR,"voxforge.lm.bin")
        self.keywordList=os.path.join(MODEL_DIR,"commands.keywords")
        self.numberGrammar=os.path.join(MODEL_DIR,"zahlen.jsgf")
        self.p=pyaudio.PyAudio()
        self.stream = None
        self.decoder=Decoder(self.config)
        self.decoder.set_lm(CONTINOUS_SEARCH,self.languageModel) 
        self.decoder.set_kws(COMMAND_SEARCH,self.keywordsList)
        self.decoder.set_jsgf(ZAHLEN_SEARCH,self.numberGrammar)
        self.result=""
        self.listening=False
        self.buf=None

what confuses me is: the error occours in the .set_lm function but not in the config.set_string part.
E: i used the same Model with pocketsphinx for android and in a java-program both worked as expected.

thanks for every answere

[Nickolay V. Shmyrev]

set_lm expects an lm object as an argument, you can use set_lm_file instead.