如何从google speech api获得每个话语的结果，并将每个音频话语块分别保存为wav文件？

from google.cloud import speech

def transcribe_audio(filepath):
    client = speech.SpeechClient()

    with open(filepath, "rb") as audio_file:
        content = audio_file.read()

    audio = speech.RecognitionAudio(content=content)
    config = speech.RecognitionConfig(
        encoding=speech.RecognitionConfig.AudioEncoding.LINEAR16,
        sample_rate_hertz=16000,
        language_code="en-US",
    )

    response = client.long_running_recognize(config=config, audio=audio)
    operation = response.operation
    operation_result = operation.result()

    for result in operation_result.results:
        alternative = result.alternatives[0]
        print("Transcript: {}".format(alternative.transcript))

        # 将每个话语的结果保存为wav文件
        save_filepath = "output_{}.wav".format(result.result_index)
        with open(save_filepath, "wb") as save_file:
            save_file.write(content)

        print("Saved speech block as: {}".format(save_filepath))


# 调用函数并传入音频文件路径
transcribe_audio("input.wav")