是否可以始终使用google cloud语音识别/api监听关键字python

import os
from google.cloud import speech_v1p1beta1 as speech

def transcribe_speech():
    client = speech.SpeechClient()

    # 配置语音识别请求
    config = speech.RecognitionConfig(
        encoding=speech.RecognitionConfig.AudioEncoding.LINEAR16,
        sample_rate_hertz=16000,
        language_code="en-US",
        enable_word_time_offsets=True,
        speech_contexts=[speech.SpeechContext(phrases=["关键字1", "关键字2"])]
    )

    # 读取音频文件
    with open("audio.wav", "rb") as audio_file:
        content = audio_file.read()

    audio = speech.RecognitionAudio(content=content)

    # 发送语音识别请求
    response = client.recognize(config=config, audio=audio)

    # 处理识别结果
    for result in response.results:
        print("Transcript: {}".format(result.alternatives[0].transcript))
        print("Confidence: {}".format(result.alternatives[0].confidence))

transcribe_speech()