Reading from my pc microphone in colab to SpeechRecognition library to be recognized?

Question

"OSError: No Default Input Device Available" on Google Colab

from the above link, I get the record() function and it is great for reading audio in binary form, but due SpeechRecognition library allowing just (PCM WAV, AIFF/AIFF-C, or Native FLAC) I tried to save the binary as WAV file by add to function:

with open('/content/gtx.wav','wb') as f:
   f.write(b)
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then all is well, and I found real sound in my drive, but an error appears when trying:

import speech_recognition as sr
r = sr.Recognizer()
temp_voice = sr.AudioFile('/content/gtx.wav')
with temp_voice as file:
   audio = r.record(file)
textout=r.recognize_google(audio)
print(textout)
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Error:

ValueError: Audio file could not be read as PCM WAV, AIFF/AIFF-C, or Native FLAC; check if file is corrupted or in another format
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So how can I read the audio and directly send it to the SpeechRecognition library? Many thanks for every answer.