speech recognition python code not working

Question

I am running the following code in Python 2.7 with pyAudio installed.

import speech_recognition as sr
r = sr.Recognizer()
with sr.Microphone() as source:                # use the default microphone as the audio source
    audio = r.listen(source)                   # listen for the first phrase and extract it into audio data

try:
    print("You said " + r.recognize(audio))    # recognize speech using Google Speech Recognition
except LookupError:                           # speech is unintelligible
    print("Could not understand audio")

The output gives a blinking pointer. That's it.

Answer 1

The possible reason could be that the recognizer_instance.energy_threshold property is probably set to a value that is too high to start off with. You should decrease this threshold, or call recognizer_instance.adjust_for_ambient_noise(source, duration = 1). You can learn more about it at Speech Recognition

Answer 2

I have solved the same problem for me with the following (noise suppression), The "listen" function has problems with environment noise. So the running code is only blinking waiting.

Use this ambient noise suppression/adjustment; r.adjust_for_ambient_noise(source, duration=5)

Referance Tuesday, March 28, 2017 Easy Speech Recognition in Python with PyAudio and Pocketsphinx

Answer 3

try to add

r.adjust_for_ambient_noise(source,duration=1)

where r is recogniser instance, like this

import speech_recognition as sr

r=sr.Recognizer()
print(sr.Microphone.list_microphone_names())
with sr.Microphone() as source:
    r.adjust_for_ambient_noise(source,duration=1)
    # r.energy_threshold()
    print("say anything : ")
    audio= r.listen(source)
    try:
        text = r.recognize_google(audio)
        print(text)
    except:
        print("sorry, could not recognise")

Answer 4

have you tried replacing

    print("You said " + r.recognize(audio))
    except LookupError:                          
    print("Could not understand audio")

with

    text = r.recognize_google(audio)
    print("You said : {}".format(text))
    text = r.recognize_google(audio)
    except:
        print("Sorry could not recognize your voice")

ensure pyaudio.h is installed by running the below command

    sudo apt-get install portaudio19-dev python-pyaudio python3-pyaudio

Answer 5

check the input volume of your microphone. It is by default set to 0 in ubuntu (in my case). Since your program got stuck on the line audio = r.listen(source), which simply means that the microphone is not able to listen to any voice input. Hope this helps.