[Python] How do I give the time duration of listening to python speech recognition library?

I am working on RPi 4 and got the code working but the listening time, from my microphone, of my speech recognition object is really long almost like 10 seconds. I want to decrease this time. I looked at the speech recognition library documentation but it does not mention the function anywhere.

Python editor gives me the following prompt of the listen() function;

self:Recogniser, source, timeout = None,phrase_time_limit = None snowboy_configuration =None
​

So I tried calling the function like:

audio = r.listen(source,None,3)


Or

audio = r.listen(source,3,3)


hoping it will listen for 3 seconds, but it's not working that way.

Following is my code:

import speech_recognition as sr

r = sr.Recognizer()

speech = sr.Microphone(2)

#print(sr.Microphone.list_microphone_names())

while 1:

with speech as source:
print("say something!…")
audio = r.adjust_for_ambient_noise(source)
audio = r.listen(source,None,3)
print("the audio has been recorded")
# Speech recognition using Google Speech Recognition
try:
print("api is enabled")
recog = r.recognize_google(audio, language = 'en-US')
# for testing purposes, we're just using the default API key
# to use another API key, use r.recognize_google(audio)
# instead of r.recognize_google(audio)

print("You said: " + recog)
except sr.UnknownValueError:
print("Google Speech Recognition could not understand audio")
except sr.RequestError as e:
print("Could not request results from Google Speech Recognition service; {0}".format(e))


How do I decrease the time duration of listening?

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