Why is python pocketsphinx giving TypeError?

Question

I am using the Python pocket sphinx tutorial, according to

https://metakermit.com/2011/python-speech-recognition-helloworld/

(complete code here):

import sys,os

def decodeSpeech(hmmd,lmdir,dictp,wavfile):
"""
Decodes a speech file
"""

try:
    import pocketsphinx as ps
    import sphinxbase

except:
    print """Pocket sphinx and sphixbase is not installed
    in your system. Please install it with package manager.
    """

speechRec = ps.Decoder(hmm = hmmd, lm = lmdir, dict = dictp)
wavFile = file(wavfile,'rb')
wavFile.seek(44)
speechRec.decode_raw(wavFile)
result = speechRec.get_hyp()

return result[0]

if __name__ == "__main__":
hmdir = "/usr/share/pocketsphinx/model/hmm/en_US/"
lmd = "/usr/share/pocketsphinx/model/lm/en_US/hub4.5000.DMP"
dictd = "/usr/share/pocketsphinx/model/lm/en_US/cmu07a.dic"
wavfile = sys.argv[1]
recognised = decodeSpeech(hmdir,lmd,dictd,wavfile)

print "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"
print recognised
print "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"

and when I run it I get the following error message:

Traceback (most recent call last):
File "hello.py", line 30, in <module>
recognised = decodeSpeech(hmdir,lmd,dictd,wavfile)
File "hello.py", line 17, in decodeSpeech
speechRec = ps.Decoder(hmm = hmmd, lm = lmdir, dict = dictp)
TypeError: __init__() got an unexpected keyword argument 'hmm'

Could you help me?

I mean the error said you the hmm is not the argument you can pass in init — galaxyan, Mar 19 '16 at 18:48
ps.Decoder(hmm = hmmd, lm = lmdir, dict = dictp) has __init__ to initial the object. it can not have hmm as input argument — galaxyan, Mar 19 '16 at 18:51
From what I can see in the [example file bundled with the project](https://github.com/cmusphinx/pocketsphinx-python/blob/master/example.py), the `Decoder()` class takes just one `config` argument. I suspect your tutorial is out of date, find a different tutorial. — Martijn Pieters, Mar 19 '16 at 18:59
I used the "new" example and I get `RuntimeError: new_Decoder returned -1 — Hugo, Mar 19 '16 at 19:16
You need to use "new" example. Runtime error is caused by incorrect path to the model it seems, you can find additional details in the log — Nikolay Shmyrev, Mar 20 '16 at 02:38
If you do `help(ps.Decoder)`, does it mention the arguments that it takes? As Martijn Pieters said, it could be that your tutorial is for a different version. — zondo, Mar 21 '16 at 18:44
Try passing in arguments in order without the keywords. `ps.Decoder(hmmd, lmdir, dictp)` — Pandemonium, Mar 25 '16 at 07:32

score 8 · Answer 1 · answered Mar 21 '16 at 23:51

Looking at the pocketsphinx code on GitHub, in decoder_test.py we have an example of how to pass options to Decoder.

So it looks like your tutorial is for an old version and you actually want:

config = ps.Decoder.default_config()
config.set_string('-hmm', hmmd)
config.set_string('-lm', lmdir)
config.set_string('-dict', dictp) 

speechRec = ps.Decoder(config)

Why is python pocketsphinx giving TypeError?

1 Answers1