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How to handle the response OpenAI Text-To-Speech API in Node.js?

news 2025/6/21 15:56:14

题意：如何在 Node.js 中处理 OpenAI 文字转语音 API 的响应？

问题背景：

Here's my code: 以下是我的代码：

const speechUrl = 'https://api.openai.com/v1/audio/speech';const headers = {'Content-Type': 'application/json','Authorization': `Bearer ${process.env.OPENAI_API_KEY}`
};async function voiceGenerator(text) {console.log('voiceGenerator is triggered');console.log('text: ', text);const body = {"model": "tts-1","input": text,"voice": "alloy","response_format": "mp3","speed": 0.9};return axios.post(speechUrl, body, { headers: headers }).then((res) => {if (res.status === 200 || res.status === 204) {// res.data = Buffer.from(res.data, 'binary');return res.data;} else {console.log('res: ', res);throw res;}}).catch((err) => {console.error('OpenAI API failed, error: ', err);throw err;});
}

And my question is that how do I convert the thing I received into mp3 buffer and store it? I don't know what exactly am I receiving. All I know is that the Content-Type is audio/mpeg and Transfer-Encoding is chunked.

我的问题是，如何将我收到的内容转换为 mp3 缓冲区并存储？我不知道我收到的到底是什么。我只知道 `Content-Type` 是 `audio/mpeg`，`Transfer-Encoding` 是分块传输（chunked）。

I can't use openai SDK because it keep throws error no matter when. I had to use API call here. Postman can just get the file by calling it btw.

我不能使用 OpenAI SDK，因为无论何时使用都会抛出错误。我不得不在这里使用 API 调用。顺便提一下，Postman 可以通过调用直接获取文件。

问题解决：

async function voiceGenerator(text) {console.log('voiceGenerator is triggered');console.log('text: ', text);const body = {"model": "tts-1","input": text,"voice": "alloy","response_format": "mp3","speed": 0.9};return axios.post(speechUrl, body, { headers: headers, responseType: 'arraybuffer' }).then((res) => {if (res.status === 200 || res.status === 204) {const buffer = Buffer.from(res.data);return buffer;} else {console.log('res: ', res);throw res;}}).catch((err) => {console.error('OpenAI API failed, error: ', err);throw err;});
}

This is the solution I reached. It turns out that by adding "responseType": "arraybuffer", the API would return the buffer array that you can convert into buffer later on.

这是我得到的解决方案。结果发现，通过添加 `"responseType": "arraybuffer"`，API 会返回一个缓冲区数组，之后你可以将其转换为缓冲区。