How do I turn on audio input for all device indexes using a Speech Recognition Library? As I want to pass in the audio for testing and there might be possibility that the library uses a different audio input device. How do I let it take the audio input from all the indexes?
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1Please provide more context of what library you are using – An0n1m1ty Jan 27 '20 at 10:15
2 Answers
You can use your microphone as a default audio input device below is a code snippet:
import speech_recognition as sr
r=sr.Recognizer() # this is a recognizer which recognize our voice3
with sr.Microphone() as source: # in this we are using a microphone to record our voicecmd
speak.speak("What can i do for you!") # this a speak invoke method w3hich ask us something
print("Ask me Something!") # this a print statement which come on console to ask something
audio=r.listen(source,timeout=60,phrase_time_limit=3)
data = ""
try:
"""
this is a try block it will recognize it our voice and say what we have told
"""
data= r.recognize_google(audio,language="en-US")
print("dynamo think you said!" + " "+data) # this will print on your console what will going to recognize by google apis
except:
"""
this is a except block which except the error which come in try block and the code is not able to run it will pass a value
"""
print("not able to listen you or your microphone is not good")
exit()

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First, You require the following things installed on your system. 1. Python 2. Speech Recognition Package 3. PyAudio
Now, You can run this Code for know your Version
import speech_recognition as s_r
print(s_r.__version__)
Output
3.8.1
It will print the current version of your speech recognition package.
Then, Set microphone to accept sound :
my_mic = s_r.Microphone()
Here you have to pass the parameter device_index=?
To recognize input from the microphone you have to use a recognizer class. Let’s just create one.
r = s_r.Recognizer()
Now, I Convert the Sound Speech into Text In Python
To convert using Google speech recognition we can use the following line:
r.recognize_google(audio)
It will return a string with some texts. ( It will convert your voice to texts and return that as a string.
You can simply print it using the below line:
print(r.recognize_google(audio))
Now the full program will look like this:
import speech_recognition as s_r
print(s_r.__version__) # just to print the version not required
r = s_r.Recognizer()
my_mic = s_r.Microphone(device_index=1) #my device index is 1, you have to put your device index
with my_mic as source:
print("Say now!!!!")
audio = r.listen(source) #take voice input from the microphone
print(r.recognize_google(audio)) #to print voice into text
If you run this should you get an Output.
But after waiting a few moments if you don’t get any output, check your internet connection.

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