PyAudio

root@edison:~# pip install --upgrade SpeechRecognition

root@edison:~# nano main.py

import collections
import mraa
import os
import sys
import time

# Import things for pocketsphinx
import pyaudio
import wave
import pocketsphinx as ps
import sphinxbase

led = mraa.Gpio(13)  
led.dir(mraa.DIR_OUT)

print("Starting")
while 1:
        #PocketSphinx parameters
        LMD   = "configuration/4842.lm"
        DICTD = "configuration/4842.dic"
        CHUNK = 1024
        FORMAT = pyaudio.paInt16
        CHANNELS = 1
        RATE = 16000
        RECORD_SECONDS = 3
        PATH = 'vcreg'
        p = pyaudio.PyAudio()
        speech_rec = ps.Decoder(lm=LMD, dict=DICTD)
        #Record audio
        stream = p.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=CHUNK)
        print("* recording")
        frames = []
        for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
            data = stream.read(CHUNK)
            frames.append(data)
        print("* done recording")
        stream.stop_stream()
        stream.close()
        p.terminate()
        # Write .wav file
        fn = "test.wav"
        #wf = wave.open(os.path.join(PATH, fn), 'wb')
        wf = wave.open(fn, 'wb')
        wf.setnchannels(CHANNELS)
        wf.setsampwidth(p.get_sample_size(FORMAT))
        wf.setframerate(RATE)
        wf.writeframes(b''.join(frames))
        wf.close()

        # Decode speech
        #wav_file = os.path.join(PATH, fn)
        wav_file=fn
        wav_file = file(wav_file,'rb')
        wav_file.seek(44)
        speech_rec.decode_raw(wav_file)
        result = speech_rec.get_hyp()
        recognised= result[0]
        print("* LED section begins")
        print(recognised)
        if recognised == 'ON.':
            led.write(1)
            print "Servo 1"
        else:
            led.write(0)
            print "Servo 0"
        cm = 'espeak "'+recognised+'"'
        os.system(cm)

root@edison:~# python main.py

Errors

>>> buf = stream.read(1024)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/pyaudio.py", line 608, in read
    return pa.read_stream(self._stream, num_frames, exception_on_overflow)
TypeError: function takes exactly 2 arguments (3 given)
>>> buf = stream.read(1024)

INFO: ngram_search_fwdtree.c(338): after: 3 root, 4 non-root channels, 11 single-phone words
INFO: ngram_search_fwdflat.c(156): fwdflat: min_ef_width = 4, max_sf_win = 25
* recording
Traceback (most recent call last):
  File "ts.py", line 34, in <module>
    data = stream.read(CHUNK)
  File "/usr/lib/python2.7/site-packages/pyaudio.py", line 608, in read
    return pa.read_stream(self._stream, num_frames, exception_on_overflow)
IOError: [Errno -9981] Input overflowed
INFO: ngram_search_fwdtree.c(430): TOTAL fwdtree 0.00 CPU -nan xRT
INFO: ngram_search_fwdtree.c(433): TOTAL fwdtree 0.00 wall -nan xRT
INFO: ngram_search_fwdflat.c(174): TOTAL fwdflat 0.00 CPU -nan xRT
INFO: ngram_search_fwdflat.c(177): TOTAL fwdflat 0.00 wall -nan xRT
INFO: ngram_search.c(317): TOTAL bestpath 0.00 CPU -nan xRT
INFO: ngram_search.c(320): TOTAL bestpath 0.00 wall -nan xRT

Reboot