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speech-to-text.py
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speech-to-text.py
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import speech_recognition as sr
import os
from pydub import AudioSegment
from pydub.silence import split_on_silence
import sys, getopt
import shutil
# a function that splits the audio file into chunks
# and applies speech recognition
def get_large_audio_transcription(path):
# initialize the recognizer
r = sr.Recognizer()
"""
Splitting the large audio file into chunks
and apply speech recognition on each of these chunks
"""
# open the audio file using pydub
sound = AudioSegment.from_mp3(path)
# split audio sound where silence is 700 miliseconds or more and get chunks
chunks = split_on_silence(sound,
# experiment with this value for your target audio file
min_silence_len = 500,
# adjust this per requirement
silence_thresh = sound.dBFS-14,
# keep the silence for 1 second, adjustable as well
keep_silence=500,
)
folder_name = "audio-chunks"
# create a directory to store the audio chunks
if not os.path.isdir(folder_name):
os.mkdir(folder_name)
whole_text = ""
# process each chunk
for i, audio_chunk in enumerate(chunks, start=1):
# export audio chunk and save it in
# the `folder_name` directory.
chunk_filename = os.path.join(folder_name, f"chunk{i}.wav")
audio_chunk.export(chunk_filename, format="wav")
# recognize the chunk
with sr.AudioFile(chunk_filename) as source:
audio_listened = r.record(source)
# try converting it to text
try:
text = r.recognize_google(audio_listened, language="pt-BR")
except sr.UnknownValueError as e:
print("Error:", str(e))
else:
text = f"{text.capitalize()}. "
# print(chunk_filename, ":", text)
whole_text += text
# return the text for all chunks detected
shutil.rmtree(folder_name)
return whole_text
def main(argv):
inputfile = ''
try:
opts, args = getopt.getopt(argv,"hi:o:",["ifile="])
except getopt.GetoptError:
print ('speech-to-text.py -i <inputfile>')
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print ('speech-to-text.py -i <inputfile>')
sys.exit()
elif opt in ("-i", "--ifile"):
inputfile = arg
print("\n", get_large_audio_transcription(inputfile))
if __name__ == "__main__":
main(sys.argv[1:])