问题描述
我想使用 SpeechRecognition 模块在离线模式下将一些音频文件转换为文本。我能够转换它,但它的准确率为 0%。谁能建议如何使其更准确? 这是我正在使用的代码:
def convert_wav_to_text(path):
"""
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_wav(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_sphinx(audio_listened)
except sr.UnkNownValueError as e:
print("Error:",str(e))
else:
text = f"{text.capitalize()}. "
whole_text += text
# return the text for all chunks detected
num = path.split('.')[0]
file = open(num+'.txt','w')
file.write(whole_text)
file.close()
convert_wav_to_text("1.wav")
解决方法
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