Response returned from api calls to openai

Dear all, this is console logged response from openAI. How can I don’t see any blob data either in body or data section, status is 200 which is OK and got no error. I am trying to TTS the following simple text and expecting the blob so we I can save them in my local.

this is simple api call to openia:
const response = await openai.audio.speech.create({
model: “tts-1”,
voice: “alloy”,
input: “Today is a wonderful day to build something people love!”,
}, { responseType: ‘arraybuffer’ });

this is console log.

Sorry this is to include the VSCode of my testing env. Thank you very much for your help