将Mac合成语音输出写入fi

Question

我有下面的Python代码，它输出口语文本“thisatest”。有人能告诉我如何将输出重定向到音频文件吗？你知道吗

from  AppKit import NSSpeechSynthesizer
import time

nssp = NSSpeechSynthesizer
ve = nssp.alloc().init()
from_voice = "com.apple.speech.synthesis.voice.Alex"

data = u'''
This is a test.
'''

def say_data (data):
        ve.setVoice_(from_voice)
        ve.startSpeakingString_(data)
        time.sleep(1)
        while ve.isSpeaking():
             time.sleep(1)

say_data (data)