[Python] Use Vosk speech recognition with Python

I'm trying to use Vosk speech recognition in a Python script, but the result is always :

{
"text" : ""
}


It's not a problem with my file because when I use in DOS "vosk-transcriber -l fr -i speech3.wav -o test6.txt" it works perfectly and I got a test6.txt with an accurate transcription.

Here is my Python :

import vosk

# Load the Vosk model
model = vosk.Model("voskSmallFr")

# Initialize the recognizer with the model
recognizer = vosk.KaldiRecognizer(model, 16000)

# Sample audio file for recognition
audio_file = "speech3.wav"

# Open the audio file
with open(audio_file, "rb") as audio:
while True:
# Read a chunk of the audio file
data = audio.read(4000)
if len(data) == 0:
break
# Recognize the speech in the chunk
recognizer.AcceptWaveform(data)

# Get the final recognized result
result = recognizer.FinalResult()
print(result)


I downloaded and tried every models available in French (my wav file is in French) on the official Vosk website (4 in total), the scripts run well but give no results contrary to the Windows command...

Any ideas? Thank you

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