Python: 如何將wav檔轉為文字? import speech_recognition as sr ; import soundfile

"""
資料來源:
https://realpython.com/python-speech-recognition/

pip install sounddevice
pip install scipy
pip install pyaudio   # 注意 要安裝喔！
pip install soundfile
pip install SpeechRecognition

"""
import soundfile
import speech_recognition as sr
import numpy as np

#typing
data: np.array = np.array([])
samplerate: int = 44100

data, samplerate = soundfile.read('out.wav')        # 讀取out.wav 檔案

r = sr.Recognizer()  # 預設辨識英文 初始化
#Recognizer

# wave 檔案 轉檔 PCM_16
soundfile.write('new.wav', data, samplerate, subtype='PCM_16')
with sr.WavFile("new.wav") as source:          # 讀取wav檔
    #type(source) speech_recognition.AudioFile
    audio = r.record(source)
    #type(audio) speech_recognition.audio.AudioData

# 辨聲音檔案　辨識成中文輸出
try:
    str1= r.recognize_google(audio,language="zh-TW")    # 使用Google的服務
    print("辨識後的文字: " +str1)

except LookupError:
    print("錯誤:Could not understand audio")